GB2568137A

GB2568137A - Polyethylene imine of low molecular weight as antiperspirant active ingredient in the form of an o/w emulsion

Info

Publication number: GB2568137A
Application number: GB1814157.2A
Authority: GB
Inventors: Banowski Bernhard; Claas Marcus
Original assignee: Henkel AG and Co KGaA
Current assignee: Henkel AG and Co KGaA
Priority date: 2017-09-01
Filing date: 2018-08-31
Publication date: 2019-05-08
Anticipated expiration: 2038-08-31
Also published as: GB2568137B; FR3070605B1; GB201814157D0; FR3070605A1; DE102017215326A1

Abstract

An antiperspirant cosmetic agent in the form of an oil-in-water emulsion., which is suitable in particular for application using a roller applicator or roll-on. The cosmetic agent contains, as an antiperspirant active ingredient, a defined homo-polyethylene imine (PEI), which is present together with selected anions and has an acidic or neutral pH value. The PEI is branched and contains 20-35 molar % tertiary amines. Non-ionic oil-in-water and water-in-oil emulsifiers are also included in the composition alongside an oil component. The composition does not contain any halides or hydroxy halides of aluminium or zirconium. An exemplary composition contains a branched polyethyleneimine with a primary:secondary:tertiary amino group ration of 40:36:24, hydrochloric acid to pH 3., PPG-15 stearyl ether as a fatty component, steareth-2 as a water-in-oil emulsifier and steareth-21 as an oil-in-water emulsifier.

Description

TECHNICAL FIELD [0001] The present disclosure relates to an antiperspirant cosmetic agent in the form of an oil-in-water emulsion, which is suitable in particular for application using a roller applicator or roll-on.

BACKGROUND [0002] The washing, cleaning, and care of one's own body is a basic human need, and modern industry is continually attempting to meet these human needs in a variety of ways. Especially important for daily hygiene is the lasting elimination or at least reduction of body odour and armpit moisture. Numerous specific deodorant or antiperspirant body care agents that have been developed for use in body regions having a high density of sweat glands, particularly in the armpit region, are known in the prior art. They are formulated in a wide range of application forms, for example as a powder, stick, aerosol spray, pump spray, liquid and gel roll-on application, cream, gel, and impregnated flexible substrates (deodorant wipes). Cosmetic antiperspirants of the prior art include, in addition to at least one oil or wax and one odorous substance component or perfume, at least one antiperspirant compound, particularly in the form of halides and/or hydroxy halides of aluminium and/or zirconium. Said antiperspirant compounds reduce the secretion of sweat of the body by temporarily constricting and/or plugging the excretory ducts of the sweat glands so that the amount of sweat can be reduced by approximately 20 to 60 percent. Furthermore, said antiperspirant compounds have an additional deodorizing effect because of the antimicrobial action of said antiperspirant compounds.

[0003] Halides and/or hydroxy halides of aluminium and/or zirconium, in conjunction with the acidic pH value of these antiperspirants, can lead to unpleasant skin reactions for some users. Furthermore, the use of the aforementioned antiperspirant compounds can lead to stains on clothing.

[0004] Roll-on emulsions that contain aluminium salts and a water-in-oil emulsifier can form liquid-crystalline structures which thicken or stabilise the emulsion and make it suitable for roll-on applications. Without aluminium salts such as aluminium chlorohydrates, thickened structures of this kind are only insufficiently structured, and the compositions lose stability.

[0005] WO 2006/18073 Al discloses various polyamines, inter alia polyethylene imines, as alternatives to halides and/or hydroxy halides of aluminium and/or zirconium as antiperspirant agent. These antiperspirant agents are described in WO 2006/18073 Al as being flocculating, meaning that the light transmission of natural sweat is reduced by at least 10% upon contact with the antiperspirant. WO 2006/18073 Al also discloses that the flocculating water-soluble polymers are present partially or fully quatemised at a pH of from 4 to 8. It is alleged that the antiperspirant effect is based on the fact that the outlet ends of sweat glands become clogged by the formed flocculations. The forming of flocculations is often considered by consumers to be visually unappealing, and the flocculations can additionally pass into clothing and cause stains there.

SUMMARY [0006] One object of embodiments of the present invention is to provide antiperspirant agents without halides and/or hydroxy halides of aluminium and/or zirconium that have a consistency suitable for roll-on applications. The antiperspirant active ingredients contained in the cosmetic agent should have an improved or very good antiperspirant effect and a lower tendency to staining on textiles.

[0007] Aspects and embodiments of the present invention are defined in the appended claims.

DETAILED DESCRIPTION [0008] Surprisingly, it has now been found that the use of certain polyethylene imines which are contained in a cosmetic agent set to an acidic to neutral pH value in the form of an oil-in-water emulsion which contains certain anions, have thickened liquid-crystalline structures even without the presence of aluminium salts, and at the same time have an antiperspirant effect comparable to the antiperspirant effect of formulations comprising aluminium salts and/or aluminium zirconium salts. The antiperspirant agents according to the disclosure therefore substantially do not contain any antiperspirant halides and/or hydroxy halides of aluminium and/or zirconium.

[0009] The following points form part of the present disclosure:

1. An antiperspirant cosmetic agent in the form of an oil-in-water emulsion, containing:

a. at least one branched homo-polyethylene imine having a molecular weight of from about 300 to about 10000 g/mol in a total amount of from about 0.1 to about 20% by weight, wherein the polyethylene imine has a proportion of amino groups with three nonhydrogen atom groups of from about 20 mol.% to about 35 mol.%, in relation to the molar amount of all amino groups in the homo-polyethylene imine,

b. at least one non-ionic water-in-oil emulsifier in a total amount of from about 0.05 to about 10% by weight,

c. at least one non-ionic oil-in-water emulsifier in a total amount of from about 0.05 to about 10% by weight, and

d. at least one oil component in a total amount of from about 0.05 to about 15% by weight, wherein:

- the specified amounts relate in each case to the total amount of the oil-in-water emulsion,

- the oil-in-water emulsion has a pH value of from about 2.5 to about 7.5 and the polyethylene imine is present in polycationic form,

- the oil-in-water emulsion contains at least one anion which is selected from the group consisting of chloride, phosphate and sulfate,

- the oil-in-water emulsion does not contain any halides and/or hydroxy halides of aluminium and/or zirconium, and

- the oil-in-water emulsion has a viscosity of from about 300 to about 6000 mPas (20 °C, Brookfield, spindle RV 3 or RV 4)

2. The antiperspirant cosmetic agent according to point 1, characterised in that the oil-in-water emulsion contains from about 0.5 to about 10% by weight, preferably from about 1.0 to about 7.0% by weight, more preferably from about 2.0 to about 5.0% by weight of the homo-polyethylene imine.

3. The antiperspirant cosmetic agent according to point 1 or 2, characterised in that 10%, 30%, 50%, 95.0% by weight or more, more preferably 99.0% by weight to 100% by weight of the anions contained in the oil-in-water emulsion are chloride ions.

4. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the oil-in-water emulsion has a pH value determined at 22 °C of from about 2.5 to about 7.0, preferably from about 3.0 to about 5.5, even more preferably from about 3.3 to about 4.5.

5. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the homo-polyethylene imine has a molecular weight of from about 500 to about 3000 mol/g, preferably from about 1000 to about 2000 mol/g.

6. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the total amount of the at least one water-in-oil emulsion is from about 0.2 to about 5.0% by weight, in relation to the total weight of the oil-in-water emulsion, and preferably is selected from non-ionic emulsifiers with an HLB value of 1 - 6 which are selected from linear saturated and unsaturated C12-C30 alkanols that are etherified with 1 to 4 ethylene oxide units per molecule, wherein steareth, ceteth, myristeth, laureth, trideceth, arachideth and beheneth in each case with 1-4 ethylene oxide units per molecule are preferred.

7. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the total amount of the at least one oil-in-water emulsifier is from about 0.2 to about 5.0% by weight, in relation to the total weight of the oil-in-water emulsion, and preferably is selected from non-ionic emulsifiers with an HLB value of more than 8, preferably from about 12 to about 18, which are selected from linear saturated and unsaturated C12-C24 alkanols that are etherified with from about 7 to about 40 ethylene oxide units per molecule, wherein steareth, ceteth, myristeth, laureth, trideceth, arachideth and beheneth in each case with 7-40 ethylene oxide units per molecule are preferred.

8. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the total amount of the at least one oil component is from about 0.1 to about 5.0% by weight, in relation to the total weight of the oil-in-water emulsion.

9. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the water-in-oil emulsion contains at least one deodorant active ingredient in a total amount of from about 0.0001 to about 15% by weight, preferably from about 0.5 to about 10% by weight, in each case in relation to the total weight of the oil-inwater emulsion.

10. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the oil-in-water emulsion also contains at least one anion selected from the group consisting of citrate, lactate, tartrate and malate.

11. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that it contains from about 0.2 to about 5.0% by weight steareth-2 as the non-ionic water-in-oil emulsifier and from about 0.2 to about 5.0% by weight steareth-21 as the non-ionic oil-in-water emulsifier.

12. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that it contains 0.5% by weight or less, and preferably no inorganic and/or organic polymeric hydrogel former.

13. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that it is packaged in a container with a ball applicator or roll-on applicator.

14. A non-therapeutic cosmetic method for preventing and/or reducing bodily odour and/or bodily perspiration, wherein a cosmetic agent according to any one of points 1 to 13 is applied to the skin, in particular to the skin of the armpit, and remains on the skin for at least 1 hour, preferably for at least about 2 hours, preferably for at least about 4 hours, in particular for at least about 6 hours.

[0010] Embodiments of the present disclosure relate to an antiperspirant cosmetic agent in the form of an oil-in-water emulsion, which is suitable in particular for application using a roller applicator or roll-on. The cosmetic agent contains, as antiperspirant active ingredient, a defined homo-polyethylene imine (sometimes also referred to hereinafter as “PEI”), which is present together with selected anions and has an acidic or neutral pH value. The use of a cosmetic agent of this kind containing PEI makes it possible to provide antiperspirant cosmetic agents that do not contain any aluminium salts and/or zirconium salts and yet are highly effective and have a lower tendency to stain textiles. As a result of the contained homopolyethylene imine, the cosmetic agent according to the disclosure, even in the absence of aluminium salts, is provided in a thickened liquid-crystalline form well suited for roll-ons.

[0011] Furthermore, embodiments of the present disclosure relates to a non-therapeutic cosmetic method for preventing and/or reducing the perspiration of the body, wherein an antiperspirant cosmetic agent according to the disclosure is applied to the skin, particularly to the skin of the armpits, and remains on the skin of the armpits for at least 1 hour, preferably for at least 2 hours, preferably for at least 4 hours, in particular for at least 6 hours.

[0012] As defined herein, the term antiperspirant is understood to mean the lessening or reduction of the perspiration of the sweat glands of the body [0013] The term “halides and/or hydroxy halides of aluminium and/or zirconium” within the scope of the present disclosure is understood in particular to mean chlorides, bromides and iodides of aluminium and zirconium and compounds of formulas AI(OH)_yX and Zr(OH)zX, wherein X in the aforementioned formulas stands for a halide ion. The fact that no halides and/or hydroxy halides of aluminium and/or zirconium are contained in the cosmetic agent means that the content thereof is less than 0.5% by weight, preferably less than about 0.1% by weight, particularly preferably 0% by weight.

[0014] In the present disclosure, the specification of % by weight relates to the total amount of the cosmetic agent, unless otherwise indicated.

[0015] What is essential to embodiments of the disclosure is the presence of at least one branched homo-polyethylene imine (“PEI”). Homo-polyethylene imines are generally constructed from the following structural units and can be present in linear or branched form.

[0016] Branched polyethylene imines can be described by the following schematic partial structural formula, i.e. a detail of the total structure without depicted ends, and can have different ratios of primary, secondary and tertiary amino groups.

[0017] The polyethylene imines can also be branched in a star shape.

[0018] Branched and unbranched homo-polyethylene imines in aqueous solution have an alkaline pH value. In the acidic pH value range, the quaternisable amino groups are present in partially to fully quaternised form.

[0019] It has been surprisingly found that certain branched homo-polyethylene imines in an acidic to neutral pH value region and in combination with specific anions, in particular chloride ions demonstrated an outstanding antiperspirant effect. In particular when setting an acidic pH value by means of hydrochloric acid, such that chloride ions can be present as anions, an excellent antiperspirant effect could be observed. Even at low usage concentrations of a PEI of this kind of approximately 3% by weight, an antiperspirant effect comparable to that achieved with a 10% by weight aluminium chlorohydrate solution could be attained.

[0020] The homo-polyethylene imines used herein are branched polyethylene imines that are unmodified, i.e. apart from hydrogen groups do not contain any substituents on the nitrogen atoms. Homo-polyethylene imines are also to be understood in accordance with the disclosure to mean that these are constructed only from ethylene imine as structural unit and do not contain any other comonomers, such as other alkylene imine units, for example.

[0021] As mentioned above, branched homo-polyethylene imines can have different ratios of primary, secondary and tertiary amino groups. The homo-polyethylene imines that are used herein are those that in an alkaline pH range have a proportion of tertiary amino groups of from about 20 mol.% to about 35 mol.% in relation to the total amount of amino groups of the homo-polyethylene imine. Since the homo-polyethylene imines are present in an acidic pH value range, the amino groups are partially to fully quaternised. Thus, it is not the proportion of tertiary amino groups in the homo-polyethylene imine, but instead the proportion of amino groups with three non-hydrogen atom groups that is defined as from about 20 mol.% to about 35 mol.%, in relation to the molar amount of all amino groups, that is to say quaternised and non-quaternised amino groups, in the homo-polyethylene imine (i.e. in relation to the sum of all groups with one, two and three non-hydrogen atom groups). The proportion of amino groups having three non-hydrogen atom groups is preferably from about 21 to about 32 mol.% in accordance with the disclosure, more preferably from about 22 to about 30 mol.%, in each case in relation to the molar amount of all amino groups in the homo-polyethylene imine.

[0022] The proportion of amino groups with one non-hydrogen group (accordingly primary amino groups at alkaline pH value) is preferably from about 30 to about 45 mol.% in accordance with the disclosure, more preferably from about 35 to about 42 mol.%, in each case in relation to the molar amount of all amino groups in the homo-polyethylene imine.

[0023] The proportion of amino groups with two non-hydrogen groups (accordingly secondary amino groups at alkaline pH value) is preferably from about 30 to about 45 mol.% in accordance with the disclosure, more preferably from about 32 to about 40 mol.%, more preferably from about 34 to about 38 mol.%, in each case in relation to the molar amount of all amino groups in the homo-polyethylene imine.

[0024] In particularly preferred cosmetic agents according to the disclosure the proportion of amino groups with one non-hydrogen group (accordingly primary amino groups at alkaline pH value) is from about 35 to about 42 mol.%, the proportion of amino groups with two nonhydrogen groups (accordingly secondary amino groups at alkaline pH value) is from about 34 to about 38 mol.%, and the proportion of amino groups with three non-hydrogen groups is from about 22 to about 30 mol.%, in each case in relation to the molar amount of all amino groups in the homo-polyethylene imine.

[0025] The proportion of primary, secondary and tertiary amino groups, in relation to the molar amount of all amino groups in the homo-polyethylene imine, can be determined by means of NMR spectroscopy.

[0026] An important aspect is that the cosmetic agent has an acidic pH value of from about 2.5 to about 7.5 (determined at 22 °C). The pH value of the cosmetic agent according to the disclosure is preferably set to a range of from about 2.5 to about 7.0, more preferably from about 3.0 to about 5.5, even more preferably from about 3.3 to about 4.5. As already mentioned, aqueous solutions of unmodified homo-polyethylene imines have an alkaline pH value. In order to bring the pH value within the above range, a pH adjuster is used. Inorganic acids such as hydrochloric acid, phosphoric acid and/or sulfuric acid in particular are suitable for this purpose. The cosmetic agent according to the disclosure therefore contains chloride ions, sulfate ions and/or phosphate ions as inorganic anions, wherein chloride ions are particularly preferred. The best antiperspirant effect was observed with chloride ions. In preferred embodiments chloride is therefore contained as inorganic anion. The proportion of chloride ions is preferably 10%, 30%, 50%, 95.0% by weight or more, more preferably 99.0% by weight to 100% by weight, of all contained anions. Sulfate ions also encompass hydrogen sulfates. As defined herein, phosphates also include hydrogen phosphates and dihydrogen phosphates.

[0027] In certain embodiments, at least one further anion can be contained in addition to chloride, sulfate ions and/or phosphate ions. Inorganic anions or organic anions can be contained as further anions. The organic anions can be phosphonates, citrate, lactate, tartrate and/or malate, for example. It has been found within the scope of the present disclosure that if organic anions such as lactate and/or citrate are used exclusively, no antiperspirant effect or only a weak antiperspirant effect is achieved. In preferred embodiments the cosmetic agents therefore do not contain lactate and/or citrate in a total amount of less than about 0.5% by weight, more preferably 0.1% by weight or less, more preferably 0% by weight, in relation to the total amount of the cosmetic agent.

[0028] In preferred embodiments of the disclosure no further anions are contained apart from chloride ions, sulfate ions and/or phosphate ions.

[0029] In accordance with the disclosure the homo-polyethylene imines contained in the cosmetic agent have an average molecular weight Mw of from about 300 to about 10000 g/mol. preferably from about 500 to about 3000 g/mol, more preferably from about 1000 to about 2000 g/mol. The average molecular weight Mw can be determined for example by gel permeation chromatography (GPC) (Andrews P: “Estimation of the Molecular Weights of Proteins by Sephadex Gel-Filtration; Biochem. J., 1964, 91, pages 222 to 233).

[0030] The cosmetic agent according to the disclosure contains the at least one homopolyethylene imine in a total amount of from about 0.1 to about 20% by weight, in relation to the total amount of the cosmetic agent. The at least one homo-polyethylene imine is more preferably contained in a total amount of from about 0.5 to about 10% by weight, more preferably from about 2.0 to about 7.0% by weight, even more preferably from about 2.5 to about 5.0% by weight. Due to the outstanding antiperspirant effect of homo-polyethylene imine in the acidic range as chloride, sulfate and/or phosphate, in particular as chloride, an excellent antiperspirant effect can be obtained even with relatively low usage concentrations.

[0031] The antiperspirant effect is based on an influencing of the sweat gland(s). In particular, influencing of the sweat gland(s) is understood to mean an influencing of the sweat gland(s) insofar as the excretion of sweat from the excretory duct is avoided or reduced.

[0032] The antiperspirant cosmetic agent of the present disclosure is present in the form of an oil-in-water emulsion. The cosmetic agent according to the disclosure thus contains at least one oil-in-water emulsifier.

[0033] The at least one emulsifier is contained in a total amount of from about 0.05 to about 10% by weight, preferably from about 0.2 to about 5.0% by weight, more preferably from about 1.0 to about 4.0% by weight, even more preferably from about 1.5 to about 3.0% by weight.

[0034] Emulsifiers that are suitable in accordance with the disclosure can be selected from anionic, cationic, non-ionic, amphoteric, in particular ampholytic and zwitterionic emulsifiers. Since, in accordance with the disclosure however, the homo-polyethylene imine is present together with specific anions, in particular chloride, non-ionic emulsifiers are particularly preferred in accordance with the disclosure. In preferred embodiments the cosmetic agent according to the disclosure therefore contains only non-ionic emulsifiers.

[0035] Oil-in-water emulsifiers:

The cosmetic agents according to the disclosure formulated as oil-in-water emulsion contain at least one oil-in-water emulsifier, preferably at least one non-ionic oil-in-water emulsifier having an HLB value of greater than from about 7 to about 20. These are emulsifiers known in general to those skilled in the art. For ethoxylated products, the HLB value is calculated according to the formula HLB = (100 - L):5, wherein L denotes the proportion by weight of the lipophilic groups, i.e, the fatty alkyl groups or fatty acyl groups in the ethylene oxide adducts, expressed in% by weight. When selecting non-ionic oil-in-water emulsifiers suitable in accordance with the disclosure, it is particularly preferred to use a mixture of non-ionic oilin-water emulsifiers in order to optimally set the stability of the compositions according to the disclosure. The individual emulsifier components supply a portion of the total HLB value or average HLB value of the oil-in-water emulsifier mixture in accordance with their proportion m the total amount of the oil-in-water emulsifiers. In accordance with the disclosure, the average HLB value of the oil-in-water emulsifier mixture is 10-19, preferably 12-18, and particularly preferably 14-17. To achieve such average HLB values, it is preferred to combine oil-m-water emulsifiers from the HLB value ranges 10-14, 14-16, and optionally 16-19 with one another. The oil-in-water emulsifier mixtures can of course also include non-ionic emulsifiers having HLB values in the range from >7-10 and 19- 20; such emulsifier mixtures can likewise be preferred in accordance with the disclosure. In another preferred embodiment, however, the deodorant or antiperspirant compositions according to the present disclosure can also include only a single oil-in-water emulsifier having an HLB value in the range from ΙΟΙ 9. Preferred deodorant or antiperspirant compositions according to the disclosure contain at least one non-ionic oil-in-water emulsifier selected from ethoxylated C8-C24 alkanols with an average of 10-100 mol ethylene oxide per mol, ethoxylated Q-C24 carboxylic acids with an average of 10-100 mol ethylene oxide per mol, silicone copolyols with ethylene oxide units or with ethylene oxide and propylene oxide units, alkylmono- and oligoglycosides with about 8about 22 carbon atoms in the alkyl group and ethoxylated analogues thereof, ethoxylated sterols, partial esters of polyglycerols with from about 2 to about 10 glycerol units and esterified with about 1- about 4 saturated or unsaturated, linear or branched optionally hydroxylated C8-C30 fatty acid esters, provided they have an HLB value of more than about 7, and mixtures of the aforementioned substances. The ethoxylated C8-C24 alkanols have the formula R¹O(CH2CH2O)nH, wherein R¹ stands for a linear or branched alkyl group and/or alkenyl group having 8-24 carbon atoms and n is the average number of the ethylene oxide units per molecule for numbers of about 10- about 100, preferably about 10- about 30 mol ethylene oxide of 1 mol capryl alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, cetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, and brassidyl alcohol, as well as technical mixtures thereof. Adducts of about 10- aboutlOO mol ethylene oxide with technical fatty alcohols having from about 12 to about 18 carbon atoms, for example coconut, palm, palm kernel, or tallow alcohol, are also suitable.

[0036] Preferred cosmetic agents contain a non-ionic emulsifier from the group of polyalkylene glycol ethers, preferably from the group of alkoxylated C8-C2.4 alkanols with an average of 10-100 mol alkylene oxide per mol, preferably from the group of ethoxylated C12Ci8 alkanols with an average of 10-30 mol ethylene oxide per mol.

[0037] The ethoxylated C8-C24 carboxylic acids have the formula R¹(O(CH2CH2O)nH, wherein R¹ stands for a linear or branched saturated or unsaturated acyl group having 8-24 carbon atoms, and n, the average number of ethylene oxide units per molecule, stands for numbers from 10-100, preferably 10-30 mol ethylene oxide per 1 mol capryiic acid, 2ethylhexanoic acid, capric acid, lauric acid, isotndecanoic acid, myristic acid, cetylic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, arachidic acid, gadoleic acid, behenic acid, erucic acid, and brassidic acid, as well as technical mixtures thereof. Adducts of 10-100 mol ethylene oxide with technical fatty acids having 1218 carbon atoms, for example coconut, palm, palm kernel, or tallow fatty acid, are also suitable. PEG-50 monostearate, PEG-100 nionostearate, PEG-50 monooleate, PEG-100 monooleate, PEG-50 mono laurate, and PEG-100 monolaurate are particularly preferred.

[0038] It is particularly preferred to use the C12-C18 alkanols or the C12-C18 carboxylic acids in each case with about 10- about 30 units of ethylene oxide per molecule, as well as mixtures of said substances, in particular ceteth-12, ceteth-20, ceteth-30, steareth-12, steareth-20, steareth-30, laureth-12, and beheneth-20. Preferred C8-C22 alkylmono- and oligoglycosides are also used. C8-C22 alkylmono- and oligoglycosides are known, commercially available surfactants and emulsifiers. They are produced in particular by reacting glucose or oligosaccharides with primary alcohols having 8-22 carbon atoms. With regard to the glycoside group, this means that both monoglycosides in which a cyclic sugar residue is glycosidically bonded to the fatty alcohol and oligomer glycosides with a degree of oligomerisation up to approximately about 8, preferably 1-2, are suitable. The degree of oligomerisation is a statistical mean value here, which forms the basis of a homologue distribution conventional for technical products of this kind. Products obtainable under the name Plantacare® contain a glucosidically bonded Cs-Cie alkyl group on an oligoglucoside group of which the mean degree of oligomerisation is about 1- about 2, in particular about 1.1about 1.4. Particularly preferred C8-C22 alkylmono- and -oligoglucosides are selected from octyl glucoside, decyl glucoside, lauryl glucoside, palmityl glucoside, isostearyl glucoside, stearyl glucoside, arachidyl glucoside and behenyl glucoside and mixtures thereof. The acyl glucamides derived from glucamine are suitable as non-ionic oil-in-water emulsifiers.

Ethoxylated sterols, in particular ethoxylated soya sterols, are suitable oil-in-water emulsifiers in accordance with the disclosure. The degree of ethoxylation must be greater than 5, preferably at least about 10, in order to have an HLB value of greater than from about 7 to about 10. Suitable commercial products are, for example PEG-10 Soy Sterol, PEG-16 Soy Sterol and PEG-25 Soy Sterol. Partial esters of polyglycerols having from about 2 to about 10 glycerol units and esterified with from about 1 to about 4 saturated or unsaturated, linear or branched, optionally hydroxylated C8-C30 fatty acid esters are preferably used, provided they have an HLB value in the range of greater than from about 7 to about 20. The following are particularly preferred: diglycerol monocaprylate, diglycerol monocaprate, diglycerol monolaurate, triglycerol monocaprylate, triglycerol monocaprate, triglycerol monolaurate, tetraglycerol monocaprylate, tetraglycerol monocaprate, tetraglycerol monolaurate, pentaglycerol monocaprylate, pentaglycerol monocaprate, pentaglycerol monolaurate, hexaglycerol monocaprylate, hexaglycerol monocaprate, hexaglycerol monolaurate, hexaglycerol monomyristate, hexaglycerol monostearate, decaglycerol monocaprylate, decaglycerol monocaprate, decaglycerol monolaurate, decaglycerol monomyristate, decaglycerol monoisostearate, decaglycerol monostearate, decaglycerol monooleate, decaglycerol monohydroxystearate, decaglycerol dicaprylate, decaglycerol dicaprate, decaglycerol dilaurate, decaglycerol dimyristate, decaglycerol diisostearate, decaglycerol distearate, decaglycerol dioleate, decaglycerol dihydroxystearate, decaglycerol tricaprylate, decaglycerol tricaprate, decaglycerol trilaurate, decaglycerol trimyristate, decaglycerol triisostearate, decaglycerol tristearate, decaglycerol trioleate and decaglycerol trihydroxystearate. Further particularly suitable oil-in-water emulsifiers are polyethylene glycol derivatives of hydrogenated castor oil (PEG-Hydrogenated Castor Oil). Particularly preferred deodorant or antiperspirant compositions according to the disclosure are characterised in that the non-ionic oil-in-water emulsifier is contained in a total amount of about 0.5- about 10% by weight, particularly preferably about 1- about 4% by weight, and especially preferably about 1.5- about 3% by weight, in relation to the total composition.

[0039] Water-in-oil emulsifiers:

Cosmetic agents according to the disclosure also contain at least one water-in-oil emulsifier, preferably at least one non-ionic water-in-oil emulsifier with an HLB value of greater than about 1.0 and lower than/equal to about 7.0, selected from the mono- and diesters of ethylene glycol and the mono-, di-, tri- and tetraesters of pentaerythrite with linear saturated fatty acids having 12-30, in particular 14-22 carbon atoms, which can be hydroxylated, and mixture hereof, as consistency enhancer and/or water binder. The mono- and diesters are preferred in accordance with the disclosure. C12-C30 fatty acid groups that are preferred in accordance with the disclosure are selected from lauric acid, myristic acid, palmitic acid, stearic acid, arachidonic acid, and behenic acid groups; the stearic acid group is particularly preferred. Non-ionic water-in-oil emulsifiers that are particularly preferred in accordance with the disclosure with an HLB value of greater than about 1.0 and less than/equal to about 7.0 are selected from pentaerythrityl monostearate, pentaerythrityl distearate, pentaerythrityl tristearate, pentaerythrityl tetrastearate, ethyleneglycol monostearate, ethyleneglycol distearate and mixtures thereof. Water-in-oil emulsifiers that are particularly preferred in accordance with the disclosure with an HLB value greater than about 1.0 and less than/equal to about 7.0 are obtainable for example as the commercial products Cutina® PES (INCI: Pentaerythrityl distearate), Cutina® AGS (INCI: Glycol distearate) or Cutina® EGMS (INCI: Glycol stearate). These commercial products already constitute mixtures of mono- and diesters (in the case of pentaerythrityl esters, tri- and tetra esters are also contained). It can be preferred in accordance with the disclosure to use only a single water-in-oil emulsifier. In another preferred embodiment the compositions according to the disclosure contain mixtures, in particular technical mixtures, of at least two water-in-oil emulsifiers. A technical mixture is understood to mean for example a commercial product such as Cutina® PES. Apart from the aforesaid water-in-oil emulsifiers based on ethylene glycol esters or pentaerythrityl esters, at least one further non-ionic water-in-oil emulsifier with an HLB value greater than about 1.0 and less than/equal to about 7.0 can also be contained in a preferred embodiment, wherein, however, the proportion of said at least one further non-ionic water-in-oil emulsifier in the total weight of non-ionic water-in-oil emulsifiers with an HLB value greater than about 1.0 and less than/equal to about 7.0, preferably should not be greater than 80%. In a particularly preferred embodiment the compositions contain the at least one additional water-in-oil emulsifier with an HLB value greater than about 1.0 and less than/equal to about 7.0 merely in a proportion by weight of at most 5% or are free from additional water-in-oil emulsifiers. As already mentioned, the HLB value can also be calculated for ethoxylated adducts. The following are preferably suitable as water-in-oil emulsifier:

- linear saturated alkanols with 12-30 carbon atoms, in particular with 16-22 carbon atoms, in particular cetyl alcohol, stearyl alcohol, arachidyl alcohol, Behenyl alcohol and lanolin alcohol or mixtures of these alcohols, as are obtainable with industrial hydrogenation of vegetable and animal fatty acids,

- esters and in particular partial esters of a polyol with 3-6 C atoms and linear saturated and unsaturated fatty acids with 12-30, in particular 14-22 C atoms, which can be branched and/or hydroxylated. Easters or partial esters of this kind are for example the mono- and diesters of glycerol or the mono esters of propylene glycol with linear or branched, saturated and unsaturated C-C carboxylic acids, which can be hydroxylated, in particular those with palmitic, isostearic and stearic acid, the sorbitan mono-, di- or triesters of linear saturated and unsaturated C-C carboxylic acids, which can be hydroxylated, in particular those of myristic acid, palmitic acid, stearic acid or mixtures of these fatty acids and methylglucose mono- and diesters of linear saturated and unsaturated C-C carboxylic acids, which can be hydroxylated;

- sterols, that is to say steroids, which at the C3 atom of the steroid structure carry a hydroxyl group and are isolated both from animal tissue (zoosterols, for example cholesterol, lanosterol) and from plants (phytosterols, for example ergosterol, stogmasterol, sitosterol) and from fungi and yeasts (mycosterols) and which can be ethoxlayed to a small extent (1-5 EO);

- alkanols and carboxylic acids each with 8-24 C atoms, in particular with 16-22 C atoms, in the alkyl group and 1-4 ethylene oxide units per molecule, which have an HLB value of greater than about 1.0 and less than/equal to about 7.0,

- glycerol monoethers of saturated and/or unsaturated, branched and/or unbranched alcohols with a chain length of 8-30, in particular 12-18 carbon atoms.

- partial esters of polyglycerols having n = from about 2 to about 10 glycerol units and esterified with from about 1 to about 5 saturated or unsaturated, linear or branched, optionally hydroxylated C-C fatty acid esters, provided they have an HLB value of less than/equal to about 7,

- and mixtures of the abovementioned substances.

[0040] In accordance with the disclosure it can be preferred to use just a single additional water-in-oil emulsifier. In another preferred embodiment the compositions according to the disclosure contain mixtures, in particular technical mixtures, of at least two additional waterin-oil emulsifiers. A technical mixture is understood for example to mean a commercial product such as Cutina® GMS, which constitutes a mixture of glyceryl monostearate and glyceryl distearate. Additional water-in-oil emulsifiers that can be used particularly advantageously are stearyl alcohol, cetyl alcohol, glyceryl monostearate, in particular in the form of the commercial products Cutina® GMS and Cutina® MD (ex Cognis), glyceryl distearate, glyceryl monocaprinate, glyceryl monocaprylate, glyceryl monolaurate, glyceryl monomyristate, glyceryl monopalmitate, glyceryl monohydroxystearate, glyceryl monooleate, glyceryl monolanolate, glyceryl dimyristate, glyceryl dipalmitate, glyceryl dioleate, propylene glycol monostearate, propylene glycol monolaurate, sorbitol monocaprylate, sorbitol monolaurate, sorbitol monomyristate, sorbitol monopalmitate, sorbitol monostearate, sorbitol sesquistearate, sorbitol distearate, sorbitol dioleate, sorbitol sesquioleate, sucrose distearate, arachidyl alcohol, behenyl alcohol, polyethylene glycol(2)stearyl ether (steareth-2), steareth-5, oleth-2, diglycerol monostearate, diglycerol monoisostearate, diglycerol monooleate, diglycerol dihydroxystearate, diglycerol distearate, diglycerol dioleate, triglycerol distearate, tetraglycerol monostearate, tetraglycerol distearate, tetraglycerol tristearate, decaglycerol pentastearate, decaglycerol pentahydroxystearate, decaglycerol pentaisostearate, decaglycerol pentaoleate, soy sterol, PEG-1 soy sterol, PEG-5 soy sterol, PEG-2-monolaurate and PEG-2monostearate.

[0041] Preferred deodorant or antiperspirant compositions according to the disclosure are characterised in that at least one water-in-oil emulsifier is contained in a total amount of about 0.1- about 10% by weight, preferably about 0.5- about 8.0% by weight, and particularly preferably about 1- about 4% by weight, in relation to the total composition. Amounts of about 2- about 3% by weight in relation to the total weight of the composition can also be especially preferred in accordance with the disclosure. The HLB values can be calculated in accordance with Griffin. If different amounts with regard to the HLB value of a substance are specified in the literature, the HLB value that is closest to the value calculated in accordance with Griffin should be used for the teaching according to the disclosure. If it is not possible to determine a clear HLB value in this way, the HLB value stated by the manufacturer of the emulsifier shall be used for the teaching according to the disclosure. If this also is not possible, the HLB value shall be determined experimentally.

[0042] A group of water-in-oil emulsifiers that is particularly preferred in accordance with the disclosure is constituted by the poly-(C2-C3)alkylene glycol-modified silicones whose prior INCI name was Dimethicone Copolyol, with the current INCI names PEG-x Dimethicone (with x = 2-20, preferably 3-17, particularly preferably 11-12), Bis-PEG-y Dimethicone (with y = 3-25, preferably 4-20), PEG/PPG a/b Dimethicone (wherein a and b independently of another stand for numbers 2-30, preferably 3-30 and particularly preferably 12-20, in particular 14-18), Bis-PEG/PPG-c/d Dimethicone (wherein c and d independently of one another stand for 10-25, preferably 14-20 and particularly preferably 14-16) and BisPEG/PPG-e/f PEG/PPG g/h Dimethicone (wherein e, f, g and h independently of one another stand for numbers 10-20, preferably 14-18 and particularly preferably 16). The following are particularly preferred: PEG/PPG-18/18 Dimethicone, which is commercially obtainable in a 1:9 mixture with Cyclomethicone as DC 3225 C or DC 5225 C, or as a mixture with Dimethicone as DC ES-5227 DM, PEG/PPG-4/12 Dimethicone, which is obtainable under the name Abil B 8852, and Bis-PEG/PPG-14/14 Dimethicone, which is commercially obtainable in a mixture with Cyclomethicone as Abil EM 97 (Goldschmidt), Bis-PEG/PPG-20/20 Dimethicone, which is obtainable under the name Abil B 8832, PEG/PPG-5/3 Trisiloxane (Silsoft 305), and PEG/PPG-20/23 Dimethicone (Silsoft 430 and Silsoft 440). Further W/O emulsifiers that are preferred in accordance with the disclosure are poly-(C2-C3)alkylene glycol-modified silicones that are hydrophobically modified with C4-C18 alkyl groups, particularly preferably cetyl PEG/PPG-10/1 Dimethicone (previously: Cetyl Dimethicone Copolyol, obtainable as Abil EM 90 or in a mixture of polyglyceryl-4-isostearate, cetyl PEG/PPG-10/1 Dimethicone and hexyl laurate under the trade name Abil WE 09), and also alkyl methicone copolyols.

[0043] The oil-in-water emulsions according to the disclosure have been developed in particular for roll-on products, that is to say for application using a ball applicator or roll-on applicator. For optimal dosing properties, the emulsion must not have an excessively low viscosity, nor can it have an excessively high viscosity. Due to the combination of the homopolyethylene imine defined in accordance with the disclosure, the water-in-oil emulsifier and the oil-in-water emulsifier, oil-in-water emulsions are formed that have liquid-crystalline structures that have a viscosity suitable for roll-on applications. The cosmetic agents of the present disclosure have a viscosity in the range of from about 300 to about 6000 mPas, preferably approximately from about 750 to about 2000 mPa s. These specified viscosity values relate to measurements taken using a Brookfield viscometer, performed 1 day following production of the emulsion using RV 3 or RV 4 spindles, at a shear rate (speed of rotation of the spindle) of 20s'¹ without Helipath at ambient temperature and at a sample temperature of, in each case, 20 C. The O/W emulsion base of the oil-in-water emulsions according to the disclosure resulted in good applicability in roll-on applications and excellent active ingredient dispensing of the homo-polyethylene imine.

[0044] Since a suitable thickening is already provided in accordance with the disclosure, embodiments in which inorganic and/or organic polymer hydrogel formers, such as celluloses, cellulose derivatives, for example hydroxyalkyl celluloses, polyacrylates, Veegum or bentones, are not contained are preferred in accordance with the disclosure. In a particularly preferred embodiment the cosmetic agents according to the disclosure are free from gels formed by inorganic and/or organic polymer hydrogel formers.

[0045] In other embodiments of the disclosure, however, inorganic and/or organic polymer hydrogel formers can be contained in suitable, usually small amounts, in order to finetune the flowability.

[0046] Besides favourable active ingredient release, the provision in the form of oil-inwater dispersion/emulsion entails further advantages. On the one hand the composition can be easily washed off the skin. On the other hand, a nourishing oil-in-water cream forms at the time of, or after the application to the skin, together with the skin’s moisture. Furthermore, the agents according to the disclosure have a pleasant cool and refreshing feel on the skin when applied. The cosmetic agents according to the disclosure also leave behind only a small amount of white residue on the skin and on textiles.

[0047] The cosmetic agents of the present disclosure also contain at least one oil component in a total amount of from about 0.05 to about 10% by weight. Oil components are understood in accordance with the disclosure to mean cosmetic oils. The term “cosmetic oil” in the sense of the present disclosure is understood to mean an oil which is suitable for the cosmetic use and which is not miscible in all amounts with water. The cosmetic oil used in accordance with the disclosure is neither an aromatic substance nor an essential oil.

[0048] The cosmetic agents according to the disclosure contain, as cosmetic oil, at least one substance selected from the group of cosmetic oils that are liquid at 20 C and 1013 hPa.

[0049] Within the scope of the present disclosure the cosmetic oil that is liquid at 20 °C and 1013 hPa is selected from the group of (i) volatile cyclic silicone oils, in particular cyclic and linear silicone oils; (ii) volatile non-silicone oils, in particular liquid paraffin oils and isoparaffin oils; (iii) non-volatile silicone oils; (iv) non-volatile non-silicone oils; and (v) mixtures thereof.

[0050] The term “volatile oil” refers to oils according to the disclosure which, at 20 °C and an ambient pressure of 1013 hPa, have a vapour pressure of from about 2.66 Pa to about 40,000 Pa (from about 0.02 to about 300 mm Hg), preferably of from about 10 to about 12,000 Pa (from about 0.1 to about 90 mm Hg), more preferably of from about 13 to about 3,000 Pa (from about 0.1 to about 23 mm Hg), in particular of from about 15 to about 500 Pa (from about 0.1 to about 4 mm Hg).

[0051] In addition, the term “non-volatile oils” in the sense of the present disclosure is understood to mean oils which, at 20 °C and an ambient pressure of 1013 hPa, have a vapour pressure of less than about 2.66 Pa (0.02 mm Hg).

[0052] It can be preferred in accordance with the disclosure to use mixtures of volatile silicone oils and volatile non-silicone oils in the antiperspirant cosmetic agents according to the disclosure, since a drier feel of the skin is achieved hereby. Furthermore, it can be preferred within the scope of the present disclosure if the antiperspirant cosmetic agents contain a non-volatile silicone oil and/or a non-volatile non-silicone oil in order to mask insoluble constituents, such as talc or ingredients that have dried on the skin.

[0053] The use of mixtures of non-volatile and volatile cosmetic oils is particularly preferred in accordance with the disclosure, since in this way parameters such as skin feel, visibility of the residue, and stability of the antiperspirant cosmetic agent according to the disclosure are adjusted and the agent can thus be better tailored to the needs of the consumer.

[0054] Volatile cosmetic oils are usually selected from cyclic silicone oils with the INCI name Cyclomethicone. Substances known by the INCI name Cyclomethicone are understood in particular to be cyclotrisiloxane (hexamethylcyclotrisiloxane), cyclotetrasiloxane (octamethylcyclotetrasiloxane), cyclopentasiloxane (decamethylcyclopentasiloxane) and cyclohexasiloxane (dodecamethylcyclohexasiloxane). These oils, at 20 °C, have a vapour pressure of approximately 13-15 Pa. Cyclomethicones are known in the prior art as oils that are well suited for cosmetic compositions, in particular for deodorising compositions, such as sprays and sticks. However, due to their persistence in the environment, it can be preferred in accordance with the disclosure to do without the use of cyclomethicones. In an especially preferred embodiment the compositions according to the disclosure and used in accordance with the disclosure contain 0 to less than about 1% by weight, preferably at most about 0.1% by weight cyclomethicones, in relation to the weight of the composition, wherein any propellant provided is not taken into consideration. A cyclomethicone substitute that is preferred in accordance with the disclosure is a mixture of C13-C16 isoparaffins, C12-C14 isoparaffins and C13-C15 alkanes, the viscosity of which at 25 °C lies in the range of from about 2 to about 6 mPas and which has a vapour pressure at 20 °C in the range of from about 10 to about 150 Pa, preferably from about 100 to about 150 Pa. A mixture of this kind is obtainable for example by the name SiClone SR-5 from the company Presperse Inc. Further preferred volatile silicone oils are selected from volatile linear silicone oils, in particular volatile linear silicone oils with 2-10 siloxane units, such as hexamethyldisiloxane (L2), octamethyltrisiloxane (L3), decamethyltetrasiloxane (L4), as are contained for example in the commercial products DC 2-1184, Dow Corning® 200 (0.65 cSt) and Dow Corning® 200 (1.5 cSt) from Dow Corning, and low-molecular phenyl trimethicone with a vapour pressure at 20 °C of approximately 2000 Pa, as is obtainable for example from GE Bayer Silicones/Momentive under the name Baysilone Fluid PD 5. Preferred antiperspirant compositions according to the disclosure, due to the drier feel on the skin and the quicker active ingredient release, contain at least one volatile silicone oil, which can be cyclic or linear. Further preferred agents according to the disclosure, due to the drier feel on the skin and the quicker active ingredient release, contain at least one volatile non-silicone oil. Preferred volatile non-silicone oils are selected from Cs-Ci6 isoparaffins, in particular from isononanol, isodecanol, isoundecanol, isododecanol, isotridecanol, isotetradecanol, isopentadecanol and isohexadecanol, and mixtures hereof. C10-C13 isoparaffin mixtures, in particular those with a vapour pressure at 20°C of 10-400 Pa, preferably 13-100 Pa, are preferred. Further agents that are preferred in accordance with the disclosure contain at least one non-volatile cosmetic oil, selected from non-volatile silicone oils and non-volatile nonsilicone oils, residues of constituents that are insoluble in the composition, such as antiperspirant active ingredients (= antiperspirant aluminium salts) or talc, can be masked successfully by a non-volatile oil. In addition, parameters such as feel on the skin, visibility of the residue, and stability of the composition according to the disclosure can be finely regulated with a mixture of various oils, in particular of non-volatile and volatile oil and can be better tailored to the needs of the consumer. Agents that are preferred in accordance with the disclosure are characterised in that the cosmetic oil, which is neither an aromatic substance nor an essential oil, comprises at least one volatile oil with a vapour pressure of 10-3000 Pa at 20 °C, which is neither an aromatic substance nor an essential oil, in a total amount of from about 0.1 to about 100% by weight, particularly preferably from about 10 to about 90% by weight, in each case in relation to the total weight of the cosmetic oils.

[0055] Of course, it is also possible to formulate agents according to the disclosure with a small proportion of volatile oils, in relation to the total weight of the agent, or even without volatile oils. Oils that are particularly preferred in accordance with the disclosure are esters if linear or branched saturated or unsaturated fatty alcohols with 2-30 carbon atoms with linear or branched saturated or unsaturated fatty acids with 2-30 carbon atoms, which can be hydroxylated, In this regard it should be noted that some esters of linear or branched C1-C22 alkanols or C14-C22 alkenols and some triesters of glycerol with linear or branched C2-C22 carboxylic acids, which can be saturated or unsaturated, are solid under normal conditions, such as cetyl stearate or glycerol stearate (= stearin). These esters which are solid under normal conditions are not cosmetic oils in accordance with the disclosure since they do not satisfy the condition “liquid under normal conditions”. The classification as to whether an ester of this kind is liquid or solid under normal conditions lies within the scope of the common general knowledge of a person skilled in the art. Esters of linear or branched saturated fatty alcohols with 2-18 carbon atoms with linear or branched saturated or unsaturated fatty acids with 3-18 carbon atoms, which can be hydroxylated, are preferred. Preferred examples thereof are isopropyl palmitate, isopropyl stearate, isopropyl myristate, 2hexyldecyl stearate, 2-hexyldecyl laurate, isodecyl neopentanoate, isononyl isononanoate, 2ethylhexyl palmitate, and 2-ethylhexyl stearate. Also preferred are isopropyl isostearate, isopropyl oleate, isooctyl stearate, isononyl stearate, isocetyl stearate, isononyl isononanoate, isotridecyl isononanoate, cetearyl isononanoate, 2-ethyl hexyl laurate, 2-ethylhexyl isostearate, 2-ethylhexyl cocoate, 2-octyldodecyl palmitate, butyloctanoic acid 2-butyloctanoate, diisotridecylacetate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, ethylene glycol dioleate, ethylene glycol dipalmitate, nhexyl laurate, n-decyl oleate, oleyl oleate, oleyl erucate, erucyl oleate, C12-C15 alkyl lactate and di-Ci2-Ci3 alkylmalate and the benzoic acid esters of linear or branched Cs-22 alkanols. Particularly preferred are benzoic acid-Ci2-Ci5 alkyl esters, available commercially for example as commercial product. Further oil components that are preferred in accordance with the disclosure are selected from C8-C22 fatty alcohol esters of monovalent or polyvalent C2-C7 hydroxy carboxylic acids, in particular the esters of glycolic acid, lactic acid, malic acid, tartaric acid, citric acid and salicylic acid. Esters of this kind based on linear Cl 4/15 alkanols, for example C12-C15 alkyl lactate, and based on C12/13 alkanols branched in the 2-position can be purchased under the trade name Cosmacol® from the company Nordmann, Rassmann GmbH & Co, Hamburg, and in particular the commercial products Cosmacol® ESI, Cosmacol® EMI and Cosmacol® ETI, Finsolv® TN (C12-C15 alkyl benzoate), and benzoic acid isostearyl esters, for example obtainable as Finsolv® SB, 2-ethylhexylbenzoate, for example obtainable as Finsolv® EB, and benzoic acid 2-octyldodecylester, for example obtainable as Finsolv® BOD. A further particularly preferred ester oil is triethyl citrate.

[0056] Preferred cosmetic agents are characterised in that these cosmetic agents contain an ester of a C3-C30 carboxylic acid, preferably an ester from the group of 2-ethylhexyl palmitate, isopropyl palmitate and triethyl citrate.

[0057] Products that are preferred in accordance with the disclosure can contain branched saturated or unsaturated fatty alcohols having 6-30 carbon atoms. These alcohols are frequently also referred to as Guerbet alcohols since they can be obtained by way ofthe Guerbet reaction. Preferred alcohol oils are 2-hexyldecanol, 2-octyldodecanol, and 2ethylhexyl alcohol. Isostearyl alcohol is also preferred. Further preferred non-volatile oils are selected from the triglycerides of linear or branched, saturated or unsaturated, optionally hydroxylated C8-30 fatty acids, provided these are liquid under normal conditions. The use of natural oils can be particularly suitable, such as soybean oil, cottonseed oil, sunflower oil, palm oil, palm kernel oil, linseed oil, almond oil, easier oil, corn oil, rapeseed oil, olive oil, sesame oil, safflower oil, wheat, germ oil, peach kernel oil and the liquid components of coconut oil and the like. Synthetic triglyceride oils, in particular capric/caprylic triglycerides, such as the commercial products Myritol® 318, Myritol® 331 (BASF/ Cognis) comprising unbranched fatty acid esters and glyceryl triisostearol with glyceryltri(2-ethy (hexanoate) with branched fatty acid esters are particularly preferred. Triglyceride oils of this kind preferably account for a proportion of less than about 50% by weight in the total weight of all cosmetic oils in the composition according to the disclosure. The total weight of triglyceride oils is particularly preferably 0.5-10% by weight, preferably 1-5% by weight, in each case in relation to the total composition, without taking into consideration any propellant optionally provided. Further non-volatile non-silicone oils that are particularly preferred in accordance with the disclosure are selected from the di carboxy lie acid esters of linear or branched C2 to C10 alkanols, in particular diisopropyl adipate, di-n-butyl adipate, di-(2-ethylhexyl) adipate, dioctyl adipate, diethyl-Zdi-n-butyl/dioctyl sebacate, diisopropyl sebacate, dioctyl malate, dioctyl maleate, dicaprylyl maleate, diisooctyl succinate, di-2-ethylhexyl succinate, and di-(2hexyldecyl) succinate. Further non-volatile non-silicone oils that are particularly preferred in accordance with the disclosure are selected from the addition products of 1 to 5 propylene oxide units to monovalent or polyvalent Cs-₂₂ alkanols, such as octanol, decanol, decanediol, lauryl alcohol, myristyl alcohol, and stearyl alcohol, for example PPG-2 myristyl ether and

PPG-3 myristyl ether (Witconol® APM). Further non-volatile non-silicone oils that are particularly preferred m accordance with the disclosure are selected from the addition products of at least 6 ethylene oxide units and/or propylene oxide units to monovalent or polyvalent Cs22 alkanols, such as glycerol, butanol, butanediol, myristyl alcohol and stearyl alcohol, which may optionally be esterified, such as PPG-14 butyl ether, PPG-9 butyl ether, PPG-10 butanediol, and PPG-1.5 stearyl ether. Further non-volatile non-silicone oils that are particularly preferred in accordance with the disclosure are selected from the symmetrical, asymmetrical or cyclic esters of carbonic acid with Cs-Cro alcohols, for example di-ncaprylylcarbonate (Cetiol® CC) or di-(2-ethylhexyl)carbonate (TegosoftDEC). Esters of carbonic acid with C1-C5 alcohols, for example glycerol carbonate or propylene carbonate, by contrast are not compounds suitable as cosmetic oil. Further oils that can be preferred in accordance with the disclosure are selected from the esters of dimers of unsaturated C12-C22 fatty acids (dimer fatty acids) with monovalent linear, branched or cyclic C2-C18 alkanols or with polyvalent linear or branched C2-C6 alkanols. The total weight of dimer fatty acid esters is particularly preferably 0.1-10% by weight, preferably 1-5% by weight, in each case in relation to the total composition, without taking into consideration any propellant optionally provided. Further cosmetic oils that are particularly preferred in accordance with the disclosure are selected from non-volatile silicone oils. Non-volatile silicone oils that are preferred in accordance with the disclosure are selected from linear polyalkyl siloxanes with a kinematic viscosity at 25 °C of at least from about 5 cSt to about 2000 cSt, in particular selected from linear poly dimethylsiloxanes with a kinematic viscosity at 25 °C of from about 5 cSt to about 2000 cSt, preferably from about 10 to about 350 cSt, particularly preferably 50100 cSt, as are obtainable under the trade names Dow Corning® 200 and Xiameter PMX from Dow Corning and Xiameter respectively. Further preferred non-volatile silicone oils are phenyltrimethicones with a kinematic viscosity at 25 °C of from about 10 to about 100 cSt, preferably of 15-30 cSt and cetyldimethicones. Natural and synthetic hydrocarbons that are preferred in accordance with the disclosure are selected from paraffin oils, isohexadecane, isoeicosane, polyisobutenene and polydecenene, which are obtainable for example under the name Emery® 3004, 3006, 3010 or under the name Ethylflo® from Albemarle or Nexbase® 2004G from Nestle, and l,3-di-(2-ethylhexyl)-cyclohexane.

[0058] Mixtures that are particularly preferred in accordance with the disclosure are free from volatile silicones or alkanes (linear/branched).

[0059] The cosmetic agents according to the disclosure can also contain at least one aromatic substance. The term “aromatic substances” is understood within the context of the present disclosure to mean substances that have a molar mass of from about 74 to about 300 g/mol which contain at least one osmophoric group in the molecule and have an odour and/or taste, i.e. that are able to excite the receptors of the hair cells of the olfactory system. Osmophoric groups are groups covalently bonded to the molecular structure in the form of hydroxy groups, formyl groups, oxo groups, alkoxycarbonyl groups, nitrile groups, nitro groups, azide groups, etc. In this regard, the term “aromatic substances” in the sense of the present disclosure also includes perfume oils, perfumes, or perfume constituents that are liquid at 20 °C and 1013 hPa.

[0060] However, mixtures of various aromatic substances which together produce a pleasant fragrance are preferred.

[0061] Particularly pleasant-smelling antiperspirant cosmetic agents according to the disclosure are obtained if the at least one aromatic substance is contained in a total amount of from about 0.001 to about 10% by weight, preferably from about 0.001 to about 9% by weight, preferably from about 0.01 to about 8% by weight, more preferably from about 0.1 to about 7% by weight, even more preferably from about 0.2 to about 6% by weight, in particular from about 0.2 to about 2% by weight, in relation to the total weight of the antiperspirant cosmetic agent.

[0062] Perfume oils can be present in the form of free oil and/or in encapsulated form. It is also preferred if the antiperspirant cosmetic agent additionally contains at least one preservative, Preservatives that are preferred in accordance with the disclosure are formaldehyde-cleaving agents iodopropynyl butylcarbamate, parabens, phenoxy-ethanol, ethanol, benzoic acid and salts thereof, dibromodicyanobutane, 2-bromo-2-nitropropane-l,3diol, imidazolidinyl urea, 5-chlor-2-methyl-4-isothiazolin-3-one, 2-chloracetamide, benzalkoniumchloride, benzyl alcohol, salicylic acid and salicylates. Further preservatives that can be used within the scope of the present disclosure are the substances listed in Annex 6 of the Regulation of Cosmetic Products and cosmetic raw materials having preserving properties or raw materials which support or intensify the preserving effect of the above-mentioned preservatives. The preservatives are preferably contained in a total amount of from about 0.01 to about 10% by weight, preferably from about 0.1 to about 7% by weight, preferably from about 0.2 to about 5% by weight, in particular from about 0.3 to about 2.0% by weight, in relation to the total weight of the antiperspirant cosmetic agent.

[0063] In accordance with the disclosure, the antiperspirant cosmetic agent can preferably also contain at least one antioxidant, preferably in a total amount of from about 0.01 to about 5.0% by weight, in relation to the total weight of the cosmetic agent. The antioxidant can be selected from ascorbic acid, ascorbyl palmitate, BHT, substituted hydroxyhydrocinnamic acid esters, substituted benzotriazoles, dialkylthiodialkanoates, tocopherol, and esters thereof (for example acetate), hydroxymethoxyphenyl decanone, paradol, and mixtures thereof, in particular substituted hydroxyhydrocinnamic acid esters and mixtures thereof.

[0064] The proportion of the water in the composition according to the disclosure is preferably from about 40 to about 97% by weight, particularly preferably 50-95% by weight, especially preferably 60-93% by weight, in each case in relation to the total composition. [0065] Further oil-in-water emulsions that are preferred in accordance with the disclosure are characterized in that, on the whole, at most about 3% by weight, preferably at most about 1% by weight, and particularly preferably 0% by weight, in each case in relation to the weight of the emulsion as a whole, of monovalent C1-C3 alkanols, such as ethanol or isopropanol, is contained. The emulsions according to the disclosure, under certain conditions, can be destabilised in respect of their storage and/or temperature stability by addition of ethanol or isopropanol, in particular in higher amounts, for example 5% by weight and more.

[0066] It can be advantageous to add to the preparations according to the disclosure at least one chelating agent in a total amount of from about 0.01 to about 3.0% by weight, preferably from about 0.02 to about 1.0% by weight, in particular from about 0.05 to about 0.1% by weight, in relation to the total weight of the antiperspirant agent according to the disclosure. Preferred chelating agents within the scope of the present disclosure are selected from the group of β-alanine diacetic acid, cyclodextrin, diethylenetriamine pentamethylene phosphonic acid, sodium, potassium, calcium disodium, ammonium, and triethanolamine salts of ethylenediaminetetraacetic acid (EDTA), etidronic acid, hydroxyethylethylenediaminetetraacetic acid (HEDTA) and sodium salts thereof, sodium salts of nitrilotriacetic acid (NTA), diethylenetriaminepentaacetic acid, phytic acid, hydroxypropylcyclodextrin, methylcyclodextrin, aminotrimethylenephosphonate pentasodium, ethylenediaminetetramethylenephosphonate pentasodium, diethylenetriamine-pentaacetate pentasodium, pentasodiumtriphosphate, potassium EDTMP, sodium EDTMP, sodium dihydroxy ethylglycinate, sodium phytate, sodium polydimethylglycinophenol sulfonate, tetrahydroxyethylethylenediamine, tetrahydroxypropyl ethylenediamine, tetrapotassium etidronate, tetrasodium etidronate, tetrasodium iminodisuccinate, trisodium ethylenediamine disuccinate, tetrasodium-Ν,Ν- bis(carboxymethyl)glutamate, tetrasodium-DL-alanine-N,Ndiacetate and desferrioxamine.

[0067] In order to further improve the antiperspirant and deodorising effect of the compositions according to the disclosure, said compositions in a preferred embodiment contain at least one deodorant active ingredient in a total amount of from about 0.0001 to about 15% by weight, in relation to the total weight of the cosmetic agent. If ethanol is used in the agents according to the disclosure, it is not considered to be a deodorant active ingredient within the scope of the present disclosure, but instead a constituent of the carrier.

[0068] Deodorant active ingredients that are suitable in accordance with the disclosure are, for example, odour absorbers, ion exchangers acting in a deodorising manner, antibacterial agents, prebiotically active components, and enzyme inhibitors or, particularly preferably combinations of the aforesaid active ingredients.

[0069] Silicates are used as odour absorbers that at the same time can also influence the rheological properties of the composition according to the disclosure, if desired. Silicates suitable in accordance with the disclosure include, in particular, sheet silicates and, among these in particular montmorillonite, kaolinite, illite, beidellite, nontronite, saponite, hectorite, bentonite, smectite and talc.

[0070] Further suitable odour absorbers are for example zeolites, zinc ricinoleate, cyclodextrins, certain metal oxides, for example aluminium oxide, and chlorophyll.

[0071] Further odour absorbers that are preferred in accordance with the disclosure are selected from perlite.

[0072] Antibacterial or antimicrobial active ingredients are understood within the scope of the disclosure to be active ingredients which reduce the number of primary germs involved odour development, or inhibit growth thereof. These germs include, inter alia, various species from the staphylococcus group, the Corynebacterium group, anaerococcus and micrococcus.

[0073] Preferred antibacterial or antimicrobial active ingredients in accordance with the disclosure are in particular organohalogen compounds and halides, quaternary ammonium compounds, a. number of plant extracts, and zinc compounds. These agents include triclosan, chlorhexidine and chlorhexidine gluconate, 3,4,4'-trichiorocarbanilide, bromochiorophene, dichlorophene, chlorothymoi, chloroxylenol, hexachlorophene, dichloro-m-xyienol, dequalimum chloride, domiphen bromide, ammonium phenol sulfonate, benzalkonium halides, benzalkonium cetyl phosphate, benzalkonium saccharinates, benzethomum chloride, cetyl pyridinium chloride, lauryl pyridinium chloride, lauryl isoquinoiimum bromide, methyl benzethonium chloride. Phenol, phenoxyethanol, disodium dihydroxyethyl suifosuccinyl undecylenate, sodium bicarbonate, zinc lactate, sodium phenol sulfonate and zinc phenol sulfonate, ketoglutaric acid, terpene alcohols such as farnesol, chlorophyllin copper complexes, α-monoalkylglycerol ethers with a branched or linear saturated or unsaturated, optionally hydroxylated C6-C22 alkyl group, particularly preferably a-(2-ethylhexyl)glycerol ethers, commercially obtainable as Sensiva® SC 50 (ex Schiilke & Mayr), carboxylic acid esters of mono-, di- and triglycerol (for example glycerol monolaurate, diglycerol monocaprinate), lantibiotics and plant extracts (for example green tea and constituents of lime blossom oil) also can be used.

[0074] Further preferred deodorant active ingredients are selected from what are known as prebiotically active components, which in accordance with the disclosure are to be understood to mean components that only inhibit or at least predominantly inhibit the odour-forming bacteria of the skin microflora, but not the desired, that is to say non-odour-forming bacteria, which belong to a healthy skin microflora. Explicit reference is made here to active ingredients such as coniferous tress extracts, in particular form the group of Pinaceae, and plant extracts from the group of Sapindaceae, Araliaceae, Lamiaceae and Saxifragaceae, in particular from extracts of Picea spp., Paullinia sp., Panax sp., Lamium album or Ribesnigrum and mixtures of these substances.

[0075] Further preferred deodorant active ingredients are selected from the antibacterially acting perfume oils and Deosafe® perfume oils, which are obtainable from the company Symrise, previously Haarmann and Reimer.

[0076] Further preferred deodorant active ingredients are selected from silver salts, in particular silver citrate, dihydrogen silver citrate, silver lactate and silver sulfate, soluble complex salts of silver, colloidal silver, and silver zeolites.

[0077] The enzyme inhibitors include substances that inhibit the enzymes responsible for breaking down sweat, in particular the aryl sulfatases, β-glucuronidases, aminoacylases, esterasens, lipases and/or lipoxygenases, for example trialkylcitric acid esters, in particular triethyl citrate, or zinc glycinate.

[0078] Preferred antiperspirant compositions according to the disclosure are characterised in that the at least one deodorant active ingredient is selected from arylsulfatase inhibitors, beta-glucuronidase inhibitors, aminoacylase inhibitors, esterase inhibitors, lipase inhibitors and lipoxygenase inhibitors, α-monoalkylglycerol ethers with a branched or linear saturated or unsaturated, optionally hydroxylated C6-C22 alkyl group, in particular a-(2-ethylhexyl) glycerol ether, phenoxyethanol, benzylheptanol, cocamidopropyl PG dimonium chloride phosphate and butyloctanoic acid, polyglycerol-3-caprylate, antibacterially acting perfume oils, Deosafe® perfume oils (Deosafe® is a registered trademark from the company Symrise, previously Haarmann & Reimer), prebiotically acting components, trialkylcitric acid esters, in particular triethyl citrate active ingredients which reduce the number of skin bacteria involved in odour formation, from the group of staphylococci, Corynebacteria, anaerococcus and micrococcus, or inhibit growth thereof, zinc compounds, in particular zinc phenol sulfonate and zinc ricinoleate, organohalogen compounds, in particular triclosan, chlorhexidine, chlorhexidine gluconate and benzalkonium halides, quaternary ammonium compounds, in particular cetyl pyridinium chloride, odour absorbers, in particular silicates and zeolites, sodium bicarbonate, lantibiotics, and mixtures of the aforementioned substances.

[0079] Further preferred antiperspirant compositions according to the disclosure are characterised in that the at least one deodorant active ingredient is contained in a total amount of from 0.0001-15% by weight, preferably 0. 2-7% by weight, particularly preferably 0.3-5% by weight, and especially preferably 0.4-1.0% by weight, in each ease m relation to the total weight of the active substance of the deodorant active ingredient or the deodorant active ingredients in the total composition.

[0080] The compositions according to the disclosure in a further particularly preferred embodiment contain both at least one deodorant active ingredient and at least one antiperspirant active ingredient.

[0081] Preferred cosmetic agents according to die disclosure also contain at least one water-soluble polyvalent C2-C9 alkanol with 2-6 hydroxyl groups and/or at least one watersoluble polyethylene glycol with 3-50, preferably 3-20 ethylene oxide units, and mixtures hereof, in order to further improve the stability of the compositions. These components are preferably selected from 1,2-propylene glycol, 2-methyl-l,3-propanediol, glycerol, 1,2butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, pentylene glycols, such as 1,2pentandiol and 1,5-pentandiol, hexane diols, such as 1,6-hexane diol, hexane triols such as 1,2,6-hexane triol, 1,2-octane diol, 1,8-octane diol, dipropylene glycol, tripropylene glycol, diglycerol, triglycerol, erythritol, sorbitol and mixtures of the aforementioned substances. Suitable water-soluble polyethylene glycols are selected from PEG-3, PEG-4, PEG-6, PEG-7, PEG-8, PEG-9, PEG-10, PEG-12, PEG-14, PEG-16, PEG-18 and PEG-20 and mixtures, hereof, wherein PEG-3 to PEG-8 are preferred. Propylene glycol, dipropylene glycol or a mixture thereof, even more preferably just propylene glycol, is preferably contained. These are preferably contained in a total amount of from about 0.1 to about 590% by weight, more preferably from about 0.5 to about 10 or from about 1 to about 5% by weight.

[0082] In accordance with a further embodiment of the present disclosure the antiperspirant cosmetic agents also contain at least one skin-cooling active ingredient. Suitable skin-cooling active ingredients in accordance with the disclosure are, for example, menthol, isopulegol and menthol derivatives, for example menthyl lactate, menthyl glycolate, menthyl ethyl oxamate, menthyl pyrrolidone carboxylic acid, menthylmethylether, menthoxypropanediol, menthone glycerine acetal (9-methy 1-6-( 1-methylethy 1)-1,4-dioxaspiro (4.5)decan-2-methanol), monomenthylsuccinate, 2-hydroxymethyl-3,5,5-trimethylcyclohexanol and 5-methyl-2-(lmethylethyl)cyclohexyl-N-ethyloxamate. Preferred skin-cooling active ingredients are menthol, isopulegol, menthyl lactate, menthoxypropanediol, menthylpyrrolidone carboxylic acid and 5-methyl-2-( 1-methylethyl)cyclohexyl-N-ethyloxamate and mixtures of these substances, in particular mixtures of menthol; and menthyl lactate, menthol, menthol glycolate and menthyl lactate, menthol and menthoxypropanediol or menthol and isopulegol.

[0083] The cosmetic agents according to the disclosure are suitable in particular for application by means of roller applicators or roll-ons and are therefore preferably contained in a container having a ball applicator or roll-on applicator.

[0084] Lastly, a further embodiment relates to a non-therapeutic cosmetic method for preventing and/or reducing the perspiration of the body, in which an antiperspirant cosmetic agent according to the disclosure is applied to the skin, in particular to the skin of the armpits, and remains on the skin of the armpits for at least about 1 hour, preferably for at least about 2 hours, preferably for at least about 4 hours, in particular for at least about 6 hours.

[0085] That which has been said with regard to the antiperspirant cosmetic agents according to the disclosure applies, mutatis mutandis, with regard to the method according to the disclosure.

Examples:

[0086] A 3% by weight aqueous solution of the homo-polyethylene imine in water was produced with use of an unmodified, branched homo-polyethylene imine having a weight average of the molecular weight of 1300 g/mol and a ratio of primary:secondarty:tertiary amino groups = 40:36:24. The solution was set to a pH value of 3.5 using hydrochloric acid.

The obtained solution was optically clear. Even after neutralization to a pH of approximately 7, the solution remained clear.

[0087] The antiperspirant effect was examined on the back of a group of samples. A reduction in sweating of approximately 65% was observed.

[0088] For comparison, a 10% by weight aqueous solution of aluminium chlorohydrate was used. Comparable reductions in sweating were observed with this comparison solution.

[0089] With use of steareth-2 as W/O emulsifier and steareth-12 as O/W emulsifier and PPG-15 stearyl ether for the oil phase, oil-in-water emulsions can be produced without the use of hydrophilic or lipophilic thickeners. Specifically, the components and value range. A viscosity was set in the range of from approximately from about 300 to about 6000 mPas (20 °C, Brookfield, spindle RV 3 or RV 4), that is to say a viscosity suitable for roll-on application. The viscosity increase was accompanied by the formation of liquid-crystalline phases. The excellent antiperspirant effect could be confirmed for the oil-in-water emulsions applied to the skin of patients.

OW Emulsion Antiperspirant Roll on	Amounts in% by weight
Polyethylene imine	0.5-5.0
Demineralised water	to 100
Hydrochloric acid 20%	to pH 2 to 7.5
Propanediol-1,2	0-5.0
PPG- 15 Stearyl ether	1.0-5.0
Steareth - 2	1.0-5.0
Steareth - 21	1.0-5.0
Perfume	0.05-4.0
Phenoxyethanol	0.1 - 1.0
Antioxidant	0.01 -2.0
pH value = 2-7.5

CLAIMS:

2. The antiperspirant cosmetic agent according to claim 1, wherein the oil-in-water emulsion contains from about 0.5 to about 10% by weight of the homo-polyethylene imine.

3. The antiperspirant cosmetic agent according to claim 1, wherein the oil-in-water emulsion contains from about 1.0 to about 7.0% by weight of the homo-polyethylene imine.

4. The antiperspirant cosmetic agent according to claim 1, wherein the oil-in-water emulsion contains from about 2.0 to about 5.0 % by weight of the homo-polyethylene imine.

5. The antiperspirant cosmetic agent according to any preceding claim, wherein 10% or more, by weight of the anions contained in the oil-in-water emulsion are chloride ions.

6. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the oil-in-water emulsion has a pH value determined at 22 °C of from about 2.5 to about 7.0.

7. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the oil-in-water emulsion has a pH value determined at 22 °C of from about 3.0 to about 5.5.

8. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the oil-in-water emulsion has a pH value determined at 22 °C of from about 3.3 to about 4.5.

9. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the homo-polyethylene imine has a molecular weight of from about 500 to about 3000 mol/g.

10. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the homo-polyethylene imine has a molecular weight of from about 1000 to about 2000 mol/g.

11. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the total amount of the at least one water-in-oil emulsion is from about 0.2 to about 5.0% by weight, in relation to the total weight of the oil-in-water emulsion, and preferably is selected from non-ionic emulsifiers with an HLB value of 1 - 6 which are selected from linear saturated and unsaturated C12-C30 alkanols that are etherified with 1 to 4 ethylene oxide units per molecule, wherein steareth, ceteth, myristeth, laureth, trideceth, arachideth and beheneth in each case with 1-4 ethylene oxide units per molecule are preferred.

12. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the total amount of the at least one oil-in-water emulsifier is from about 0.2 to about 5.0% by weight, in relation to the total weight of the oil-in-water emulsion, and preferably is selected from non-ionic emulsifiers with an HLB value of more than about 8, which are selected from linear saturated and unsaturated C12-C24 alkanols that are etherified with from about 7 to about 40 ethylene oxide units per molecule, wherein steareth, ceteth, myristeth, laureth, trideceth, arachideth and beheneth in each case with 7 40 ethylene oxide units per molecule are preferred.

13. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that it contains from about 0.2 to about 5.0% by weight steareth-2 as the non-ionic water-in-oil emulsifier and from about 0.2 to about 5.0% by weight steareth-21 as the non-ionic oil-in-water emulsifier.

14. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that it contains 0.5% by weight or less inorganic and/or organic polymeric hydrogel former.

15. The antiperspirant cosmetic agent according to any one of the preceding points, characterised in that the total amount of the at least one oil component is from about 0.1 to about 5.0% by weight, in relation to the total weight of the oil-in-water emulsion.

16. The antiperspirant cosmetic agent according to any one of the preceding points, wherein the water-in-oil emulsion contains at least one deodorant active ingredient in a total amount of from about 0.0001 to about 15% by weight, preferably from about 0.5 to about 10% by weight, in each case in relation to the total weight of the oil-in-water emulsion.

17. The antiperspirant cosmetic agent according to any one of the preceding points, wherein the oil-in-water emulsion also contains at least one anion selected from the group consisting of citrate, lactate, tartrate and malate.

18. The antiperspirant cosmetic agent according to any one of the preceding points, wherein te agent is packaged in a container with a ball applicator or roll-on applicator.

19. A non-therapeutic cosmetic method for preventing and/or reducing bodily odour and/or bodily perspiration, wherein a cosmetic agent according to any preceding claim is applied to the skin, and remains on the skin for at least about 1 hour.

Claims

CLAIMS:

a. at least one branched homo-polyethylene imine having a molecular weight of from 300 to 10000 g/mol in a total amount of from 0.1 to 20% by weight, wherein the polyethylene imine has a proportion of amino groups with three non-hydrogen atom groups of from 20 mol.% to 35 mol.%, in relation to the molar amount of all amino groups in the homo-polyethylene imine,

b. at least one non-ionic water-in-oil emulsifier in a total amount of from 0.05 to 10% by weight,

c. at least one non-ionic oil-in-water emulsifier in a total amount of from 0.05 to 10% by weight, and

d. at least one oil component in a total amount of from 0.05 to 15% by weight, wherein:

- the oil-in-water emulsion has a pH value of from 2.5 to 7.5 and the polyethylene imine is present in polycationic form,

- the oil-in-water emulsion does not contain any halides or hydroxy halides of aluminium or zirconium, and

- the oil-in-water emulsion has a viscosity of from 300 to 6000 mPa· s (20 °C, Brookfield, spindle RV 3 or RV 4)

2. The antiperspirant cosmetic agent according to claim 1, wherein the oil-in-water emulsion contains from 0.5 to 10% by weight of the homo-polyethylene imine.

3. The antiperspirant cosmetic agent according to claim 1, wherein the oil-in-water emulsion contains from 1.0 to 7.0% by weight of the homo-polyethylene imine.

4. The antiperspirant cosmetic agent according to claim 1, wherein the oil-in-water emulsion contains from 2.0 to 5.0 % by weight of the homo-polyethylene imine.

5. The antiperspirant cosmetic agent according to any preceding claim, wherein 10% or more,

08 03 19 by weight of the anions contained in the oil-in-water emulsion are chloride ions.

6. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the oil-in-water emulsion has a pH value determined at 22 °C of from 2.5 to 7.0.

7. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the oil-in-water emulsion has a pH value determined at 22 °C of from 3.0 to 5.5.

8. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the oil-in-water emulsion has a pH value determined at 22 °C of from 3.3 to 4.5.

9. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the homo-polyethylene imine has a molecular weight of from 500 to 3000 mol/g.

10. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the homo-polyethylene imine has a molecular weight of from 1000 to 2000 mol/g.

11. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the total amount of the at least one water-in-oil emulsifier is from 0.2 to 5.0% by weight, in relation to the total weight of the oil-in-water emulsion.

12. The antiperspirant cosmetic agent according to claim 11, wherein the at least one oil-inwater emulsifier is selected from non-ionic emulsifiers with an HLB value of 1 - 6 which are selected from linear saturated and unsaturated C12-C30 alkanols that are etherified with 1 to 4 ethylene oxide units per molecule.

13. The antiperspirant cosmetic agent according to claim 12, wherein the at least one emulsifier is selected from steareth, ceteth, myristeth, laureth, trideceth, arachideth and beheneth that are etherified with 1-4 ethylene oxide units per molecule.

08 03 19

14. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the total amount of the at least one oil-in-water emulsifier is from 0.2 to 5.0% by weight, in relation to the total weight of the oil-in-water emulsion.

15. The antiperspirant cosmetic agent according to claim 14, wherein the at least one oil-inwater emulsifier is selected from non-ionic emulsifiers with an HLB value of more than 8, which are selected from linear saturated and unsaturated C12-C24 alkanols that are etherified with from 7 to 40 ethylene oxide units per molecule.

16. The antiperspirant cosmetic agent according to claim 15, wherein the at least one oil-inwater emulsifier is selected from steareth, ceteth, myristeth, laureth, trideceth, arachideth and beheneth that are etherified with 7-40 ethylene oxide units per molecule.

17. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that it contains from 0.2 to 5.0% by weight steareth-2 as the non-ionic water-in-oil emulsifier and from 0.2 to 5.0% by weight steareth-21 as the non-ionic oil-inwater emulsifier.

18. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that it contains 0.5% by weight or less inorganic and organic polymeric hydrogel former.

19. The antiperspirant cosmetic agent according to any one of the preceding claims, characterised in that the total amount of the at least one oil component is from 0.1 to 5.0% by weight, in relation to the total weight of the oil-in-water emulsion.

20. The antiperspirant cosmetic agent according to any one of the preceding claims, wherein the water-in-oil emulsion contains at least one deodorant active ingredient in a total amount of from 0.0001 to 15% by weight, in relation to the total weight of the oil-in-water emulsion.

21. The antiperspirant cosmetic agent according to claim 20, wherein the water-in-oil emulsion contains at least one deodorant active ingredient in a total amount of from from

0.5 to 10% by weight, in relation to the total weight of the oil-in-water emulsion.

22. The antiperspirant cosmetic agent according to any one of the preceding claims, wherein the oil-in-water emulsion also contains at least one anion selected from the group consisting of citrate, lactate, tartrate and malate.

23. The antiperspirant cosmetic agent according to any one of the preceding claims, wherein the agent is packaged in a container with a ball applicator or roll-on applicator.

24. A non-therapeutic cosmetic method for preventing and/or reducing bodily odour and/or bodily perspiration, wherein a cosmetic agent according to any preceding claim is applied to the skin, and remains on the skin for at least 1 hour.

08 03 19