EP1722656A1 - Traitement de tissu keratineux - Google Patents

Traitement de tissu keratineux

Info

Publication number
EP1722656A1
EP1722656A1 EP05725298A EP05725298A EP1722656A1 EP 1722656 A1 EP1722656 A1 EP 1722656A1 EP 05725298 A EP05725298 A EP 05725298A EP 05725298 A EP05725298 A EP 05725298A EP 1722656 A1 EP1722656 A1 EP 1722656A1
Authority
EP
European Patent Office
Prior art keywords
sachet
receptacle
composition
heating system
topical composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05725298A
Other languages
German (de)
English (en)
Inventor
Michael Jason Ullom
Paul Robert Tanner
Reuben Earl Oder, Iii
Erica Heidi Hollmann
Nancy Coultrip Dawes
Debra Gay Gehring
Karl Anton Bakker
Ty Eric Martin
Peter James Hargraves
Tanya Nicole Blasko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/798,473 external-priority patent/US20050220828A1/en
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of EP1722656A1 publication Critical patent/EP1722656A1/fr
Withdrawn legal-status Critical Current

Links

Definitions

  • This invention relates to a method of treating keratinous tissue.
  • the treatment utilizes at least one topical composition for application to keratinous tissue, a sachet containing the topical composition and a receptacle with heating system for releasably receiving at least one sachet.
  • Background of the Invention Many topically applied products currently available to consumers are directed primarily to improving the health and or physical appearance of the skin. Many of these skin care products are directed to delaying, minimizing or even eliminating skin wrinkling, skin discolorations, and other histological changes typically associated with the aging and, or environmental damage to human skin. Other topically applied products are pharmaceuticals, designed to treat specific diseases via the keratinous tissue.
  • topically applied products Consumers prefer topically applied products since they are not only effective, but also safe and pleasant to use.
  • the experience of topical application is enhanced when the topically applied product is warmed or heated. For example, when a warmed moisturizing lotion is applied to the skin of the face or body, the sensation is perceived by users as more pleasing than application of a cold lotion. The experience of applying the lotion, then, becomes a motivating factor in using the lotion and the lotion is applied more frequently than would be the case if it was applied cold. Regular use of topical products ensures that the maximum benefit of the actives is achieved.
  • Many topical compositions are reduced in viscosity when warmed. The reduced viscosity can result in a composition that flows more readily onto the skin, hair or nails. Petroleum jelly is an example of such a product.
  • the petroleum jelly When warmed, the petroleum jelly becomes less viscous and the user can apply a thinner coat with less force. When the petroleum jelly cools, it returns to its original rheology, and a thin, but complete, coat remains on the surface to which it has been applied. It is, of course, possible for topical compositions to become so thin that they are not aesthetically pleasing, are more difficult to apply and, when spilled, quickly soil the surrounding area. For these reasons, it is important that the temperature to which the topical compositions are heated is within a controlled range. This controlled range varies with the specific composition being heated. It is known to warm or heat topically applied products via delivery of fluid product from reservoirs. However, many topically applied products are easily degraded by heat, especially by repeated heating.
  • the method comprises as a first step, warming a topical composition contained in a sachet using a receptacle.
  • the receptacle comprises: walls defining a cavity for releasably receiving at least one sachet; a heating system associated with one or more of the walls of the cavity; and a power source operatively associated with the heating system.
  • the power source supplies sufficient energy to the heating system to warm the composition inside the sachet to a target temperature sufficient to provide easy application to the keratinous tissue but not so fluid to run off the surface when applied. Generally the temperature is from about 30°C to 65°C.
  • the warmed composition is removed from the sachet and applied to keratinous tissue.
  • the application discloses a receptacle for warming a topical composition contained in a sachet.
  • the receptacle comprises walls defining a cavity for releasably receiving at least one sachet; and a heating system associated with one or more of the cavity walls.
  • the heating system achieves and maintains a target temperature of the topical composition.
  • the heating system is activated by insertion of the sachet.
  • the receptacle is controlled by a monitor such that when a target temperature for the topical composition, appropriate to the application of the topical composition, is achieved, the heating system maintains that target temperature for a predetermined period.
  • the receptacle comprises a power source operatively associated with the heating system for supplying energy to the heating system.
  • a kit for treatment of keratinous tissue comprises at least one topical composition, at least one sachet comprising surfaces defining one or more chambers for containing the composition and a receptacle for releasably receiving at least one sachet.
  • the receptacle comprises walls defining a cavity for releasably receiving the sachet(s), a heating system associated with one or more of the walls; and a power source operatively associated with the heating system.
  • the composition is warmed when the sachet is inserted into the cavity of the receptacle.
  • a skin care regimen that comprises selecting a sachet from a sachet assortment, inserting the sachet into a receptacle, as described above, for releasably receiving the sachet, and activating the heating system operatively associated with the receptacle, warming the composition contained in the sachet. After warmthing, the sachet is opened and the warmed composition is applied to a user's skin.
  • This regimen is optionally, but preferably, followed at least once per day.
  • Figure la is a perspective view of an embodiment of a receptacle with a sachet inserted.
  • Figure lb is a right side view of the embodiment of Figure la, with no sachet inserted.
  • Figure lc is a top plan view of the embodiment of Figure la.
  • Figure Id is an exploded view of the embodiment of Figure la, with no sachet inserted.
  • Figure 2a is a front view of a second embodiment of a battery-powered receptacle.
  • Figure 2b is a right side view of the embodiment of Figure 2a.
  • Figure 2c is a cross sectional view of the embodiment of Figure 2a taken along line A-A.
  • Figure 2d is a top plan view of the embodiment of Figure 2a.
  • Figure 2e is a back plan view of the embodiment of Figure 2a.
  • Figure 3a is a perspective view of a third embodiment of a receptacle designed to receive a plurality of sachets.
  • Figure 3b is a top plan view of the embodiment shown in Figure 3 a.
  • Figure 4a is a perspective view of a fourth embodiment of a receptacle inserted into a docking station.
  • Figure 4b is a top plan view of the receptacle with docking station shown in Figure 4a.
  • Figure 4c is a cross sectional view of the receptacle with docking station shown in Figure 4a taken along line A-A of Figure 4b.
  • Figure 4d is a left side plan view of the receptacle with docking station shown in Figure 4a.
  • Figure 4e is a front plan view of the receptacle with docking station shown in Figure 4a.
  • Figure 5a is a front plan view of a first embodiment of a sachet.
  • Figure 5b is a perspective view of a sachet as shown in Figure 5a.
  • Figure 5c is a bottom plan view of a sachet as shown in Figure 5a.
  • Figure 5d is a right side view of a sachet as shown in Figure 5 a.
  • Figure 5e is a cross sectional view of the sachet shown in Figure 5a, taken along line A-A of Figure 5b.
  • Figure 6a is a front plan view of a second embodiment of a sachet having two chambers.
  • Figure 6b is a cross sectional view of a sachet as shown in Figure 6a taken along line A-A and showing the contained compositions.
  • Figure 7a is a front plan view of a third embodiment of the sachet also having two chambers.
  • Figure 7b is a left side view of the embodiment of Figure 7a.
  • Figure 7c is a perspective view of the embodiment shown in Figure 7a.
  • Figure 8a is a front plan view of a fourth embodiment of a sachet having a contact point to activate the heater system.
  • Figure 8b is a side view of the sachet of Figure 8a.
  • Figure 8c is perspective view of the sachet of Figure 8a.
  • Figure 9a is a perspective view of a fourth embodiment of a receptacle having two heating elements and two heat sinks.
  • Figure 9b is a front plan view of the embodiment of Figure 9a.
  • Figure 9c is a cross sectional view of the embodiment of Figure 9a, taken along line B-B of Figure 9b.
  • All percentages and ratios used herein are by weight of the total composition and all measurements made are at 25°C, unless otherwise designated.
  • the compositions of the present invention can comprise, consist essentially of, or consist of, the essential components as well as optional ingredients described herein.
  • compositions or component may include additional ingredients, but only if the additional ingredients do not materially alter the basic and novel characteristics of the claimed compositions or methods.
  • keratinous tissue refers to keratin-containing layers disposed as the outermost protective covering of mammals which includes, but is not limited to, skin, hair, toenails, fingernails, cuticles, hooves, lips, etc.
  • topical application means to apply or spread the compositions of the present invention onto the surface of the keratinous tissue.
  • the term "dermatologically acceptable,” as used herein, means that the compositions or components described are suitable for use in contact with mammalian keratinous tissue without undue toxicity, incompatibility, instability, allergic response, and the like.
  • the term "flexible” as used herein, means “easily collapsed, flattened, deformed or bent by the hand or fingers”.
  • the term “rigid” as used herein, means “not easily collapsed, flattened, deformed or bent by the hand or fingers”.
  • heating system refers to all components used either to transfer energy from the energy source to the contents of the sachet or to indicate when the target temperature has been achieved. Examples are: the heating element associated with the cavity wall adjacent to the power source and various other components.
  • microprocessor means a computer whose entire central processing unit (CPU) is contained on an integrated chip, or a plurality of integrated chips.
  • microcontroller means a microprocessor on a single integrated circuit intended to operate as an embedded system. In addition to a CPU, a microcontroller typically includes small amounts of RAM and PROM, timers, and input/out.
  • heat sink refers to a piece of thermally conductive material designed to absorb, distribute, or transfer heat from a heat source.
  • sachet refers to a packet or pouch having fluid impervious walls that can be filled with a composition containing a topical composition or ingredient.
  • unit dose means an amount of the composition sufficient for a single application or treatment.
  • safe and effective amount means an amount of a compound or composition sufficient to significantly induce a positive benefit, preferably a positive keratinous tissue appearance or feel benefit, including independently or in combination the benefits disclosed herein, but low enough to avoid serious side effects (i.e., to provide a reasonable benefit to risk ratio, within the scope of sound judgment of the skilled artisan).
  • timer as used herein means a timepiece that measures a time interval and signals its end.
  • compositions for use in the present invention are topically applied.
  • the topical compositions disclosed are useful for regulating keratinous tissue.
  • regulating skin includes prophylactically regulating and/or therapeutically regulating skin condition, and may involve one or more of the following benefits: thickening (i.e., building the epidermis and/or dermis layers of the skin and/or the subcutaneous layers such as fat and muscle and where applicable the keratinous layers of the nail and hair shaft) to reduce atrophy (e.g., of the skin); increasing the convolution of the dermal-epidermal border; and reducing non-melanin skin discoloration such as under eye circles, blotching (e.g., uneven red coloration due to, e.g., rosacea) (hereinafter referred to as "red blotchiness”), sallowness (pale or yellow color), discoloration caused by telangiectasia or spider vessels, discolorations due to melanin (e.g
  • prophylactically regulating skin condition includes delaying, minimizing and/or preventing visible and or tactile discontinuities in skin (e.g., texture irregularities, fine lines, wrinkles, sagging, stretch marks, cellulite, puffy eyes, and the like in the skin which may be detected visually or by feel).
  • therapeutically regulating skin condition includes ameliorating (e.g., diminishing, minimizing and/or effacing, discontinuities in skin). Regulating skin condition involves improving skin appearance and/or feel.
  • "regulating skin condition” is intended to include regulation of such signs irrespective of the mechanism of origin.
  • a wide range of quantities of the compositions of the present invention can be employed to provide a skin, hair or nail appearance and/or feel benefit. Quantities of the present compositions, which are typically applied per application are, in milligrams of composition over a square centimeter of the skin herein referred to as "mg/cm ⁇ ", is from about 0.1 mg/cm ⁇ to about
  • a particularly useful application amount is about 0.5 mg/cm ⁇ to about 10 mg/cm ⁇ .
  • An embodiment of the invention comprises a composition comprising at least one active ingredient.
  • the active ingredient can be a skin care active.
  • the active ingredients that can be selected are those listed below. Mixtures of those listed can also be used.
  • the compositions may optionally comprise a safe and effective amount of an active. Examples of actives which can be included are listed below. These actives are preferably present at from about 0.0001% to about 20%, more preferably from about 0.05% to about 5%, even more preferably from about 0.1% to about 2%, by weight of the composition. Exceptions to these preferred ranges are those for conditioning agents and peptides which are specified below. Actives can have more than one mechanism of action, so their placement in specific categories does not necessarily encompass their entire range of activity.
  • Non-limiting examples of actives useful in the present invention include: Actives 1. Desquamation Actives An example of a desquamation active is salicylic acid. Other examples are ⁇ -hydroxy acids (e.g. glycolic acid, lactic acid) and ⁇ -keto acids (e.g. pyruvic acid). 2. Anti-Acne Actives Examples of useful anti-acne actives include resorcinol, sulfur, erythromycin, zinc, and dehydroacetic acid. Further examples of suitable anti-acne actives are described in further detail in U. S. Patent No. 5,607,980. 3.
  • anti-wrinkle Actives/Anti-atrophy actives suitable for use in the compositions of the present invention include hydroxy acids (e.g., salicylic acid, glycolic acid), keto acids (e.g., pyruvic acid), ascorbic acid (vitamin C), phytic acid, lysophosphatidic acid, flavonoids (e.g., isoflavones, flavones, etc.), stilbenes, cinnamates, resveratrol, kinetin, zeatin, dimethylaminoethanol, synthetic peptides, peptides from natural sources (e.g., soy peptides), salts of sugar acids (e.g., Mn gluconate), retinoids (e.g.
  • vitamin B compounds e.g., thiamine (vitamin Bl), niacinamide (vitamin B3), panthenol and pantothenic acid (vitamin B5), pyridoxine (vitamin B6), carnitine (vitamin Bt), riboflavin (vitamin B2), and their derivatives and salts (e.g., HCl salts or calcium salts)).
  • vitamin B compounds e.g., thiamine (vitamin Bl), niacinamide (vitamin B3), panthenol and pantothenic acid (vitamin B5), pyridoxine (vitamin B6), carnitine (vitamin Bt), riboflavin (vitamin B2), and their derivatives and salts (e.g., HCl salts or calcium salts)).
  • anti-oxidants/radical scavengers useful in the present invention include ascorbic acid (vitamin C) and its salts, ascorbyl esters of fatty acids, ascorbic acid derivatives (e.g., magnesium ascorbyl phosphate), tocopherol (vitamin E), tocopherol sorbate, tocopherol acetate, other esters of tocopherol, butylated hydroxy benzoic acids and their salts (e.g.
  • butylated hydroxyl toluene which is commonly known as BHT
  • BHT butylated hydroxyl toluene
  • 6-hydroxy-2,5,7,8- tetramethylchroman-2-carboxylic acid amines (e.g., N,N-diethylhydroxylamine, amino- guanidine), nordihydroguaiaretic acid, bioflavonoids, amino acids, silymarin, tea extracts, and grape skin/seed extracts.
  • Preferred anti-oxidants/radical scavengers are selected from grape skin/seed extracts, tea extracts, and esters of tocopherol, more preferably tocopherol acetate. 5.
  • Chelators Exemplary chelators that are useful herein are disclosed in U.S. Patent No. 5,487,884. 6.
  • Flavonoids are broadly disclosed in U.S. Patents 5,686,082 and 5,686,367.
  • Examples of flavonoids particularly suitable for use in the present invention are one or more flavones, one or more chalcones, one or more flavanones (e.g. hesperidin), one or more isoflavones, one or more coumarins, one or more chromones, one or more dicoumarols, one or more chromanones, one or more chromanols, isomers (e.g., cis/trans isomers) thereof, derivatives thereof, and mixtures thereof.
  • flavonoids particularly suitable for use in the present invention are one or more flavones, one or more chalcones, one or more flavanones (e.g. hesperidin), one or more isoflavones, one or more coumarins, one or more chromones, one or more dicoumarols, one or more chromanone
  • Preferred for use herein are flavones and isoflavones, in particular daidzein (7,4'- dihydroxy isoflavone), genistein (5,7,4'-trihydroxy isoflavone), equol (7,4'-dihydroxy isoflavan), 5,7-dihydroxy-4'-methoxy isoflavone, soy isoflavones (a mixture extracted from soy), and mixtures thereof.
  • Steroidal anti-inflammatory agents include but are not limited to, corticosteroids such as hydrocortisone.
  • a second class of anti-inflammatory agents, which is useful in the compositions, includes the nonsteroidal anti-inflammatory agents.
  • compositions of the present invention may optionally comprise a safe and effective amount of an anti-cellulite agent.
  • Suitable agents may include, but are not limited to, xanthine compounds (e.g., caffeine, theophylline, theobromine, and aminophylline).
  • Tanning Actives A preferred tanning active is dihydroxyacetone.
  • Skin Lightening Agents include those known in the art, including kojic acid, arbutin, tranexamic acid, ascorbic acid and derivatives thereof (e.g., magnesium ascorbyl phosphate or sodium ascorbyl phosphate, ascorbyl glucoside, and the like).
  • skin lightening materials suitable for use herein include Actiwhite ® (Cognis), Emblica ® (Rona), Azeloglicina (Sinerga), Sepiwhite, hexamidine, sugar amines, (e.g., N-acetyl glucosamine), phytosterols (e.g. one or more sitosterol, stigmasterol, campesterol, brassicasterol, etc.), and extracts (e.g. mulberry extract). 11.
  • actives useful herein include those selected from the group consisting of salicylic acid, benzoyl peroxide, 3-hydroxy benzoic acid, glycolic acid, lactic acid, 4-hydroxy benzoic acid, acetyl salicylic acid, 2-hydroxybutanoic acid, 2-hydroxypentanoic acid, 2-hydroxyhexanoic acid, cis-retinoic acid, trans-retinoic acid, retinol, phytic acid, N-acetyl-L- cysteine, lipoic acid, azelaic acid, arachidonic acid, tetracycline, ibuprofen, naproxen, hydrocortisone, acetaminophen, resorcinol, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, 2,4,4'-trichloro-2'-hydroxy diphenyl ether, 3,4,4'-trichlorocarbanilide, oc
  • sunscreen actives may be organic or inorganic. Sagarin, et al., at Chapter VIII, pages 189 et seq., of Cosmetics Science and Technology (1972). discloses numerous suitable actives. Additional actives can be found in "The European Union Cosmetics Directive 76/768/EEC, Annex VII.
  • suitable sunscreen agents include octinoxate, avobenzone, oxybenzone, octocrylene, octisalate, homosalate, meradimate, ensulizole, zinc oxide, titanium dioxide, and mixtures of these compounds. 13.
  • compositions of the present invention may comprise a conditioning agent selected from the group consisting of humectants, moisturizers, hair conditioners, or skin conditioners, including emollients.
  • a conditioning agent selected from the group consisting of humectants, moisturizers, hair conditioners, or skin conditioners, including emollients.
  • humectants selected from the group consisting of humectants, moisturizers, hair conditioners, or skin conditioners, including emollients.
  • aloe vera in any of its variety of forms (e.g., aloe vera gel); polyhydroxy compounds such as sorbitol, mannitol, glycerol, hexanetriol, butanetriol, propylene glycol, butylene glycol, hexylene glycol and the like; polyethylene glycols; sugars (e.g., melibiose) and starches; sugar and starch derivatives (e.g., alkoxylated glucose, fructose, sucrose, etc.); hyaluronic acid; panthenol and panthenol derivatives; lactamide monoethanolamine; acetamide monoethanolamine; sucrose polyester; petrolatum; silicones and silicone elastomers; hydrocarbon oils; fatty alcohols; fatty acids and esters; esters of mono and dibasic carb
  • Silicones useful in the composition herein include polyalkylsiloxanes with viscosities of from about 0.5 to about 1,000,000 centistokes at 25°C. Additional silicones suitable for use herein are the silicone elastomers, including emulsifying or non-emulsifying crosslinked siloxane elastomers, silicone gums, silicone resins, amino silicones, cationic silicones, high refractive silicones or mixtures thereof.
  • Emulsifying crosslinked organopolysiloxane elastomers can notably be chosen from the crosslinked polymers described in US Patents 5,412,004, 5,837,793, and 5,811,487.
  • the non-emulsifying elastomers are dimethicone/vinyl dimethicone crosspolymers.
  • dimethicone/vinyl dimethicone crosspolymers are supplied by a variety of suppliers including Dow Corning (DC 9040, DC 9041, DC9045), General Electric (SFE 839), Shin Etsu (KSG-15, 16, 18), and Grant Industries (GRANSILTM line of elastomers).
  • cross-linked organopolysiloxane elastomers useful in the present invention and processes for making them are further described in U.S. Patent 4,970,252, U.S. Patent 5,760,116, and U.S. Patent 5,654,362.
  • Additional crosslinked organopolysiloxane elastomers useful in the present invention are disclosed in Japanese Patent Application JP 61-18708, assigned to Pola Kasei Kogyo KK.
  • the conditioning agent is selected from the group consisting of glycerol, urea, petrolatum, sucrose polyester, silicones, esters, and combinations thereof. 14.
  • Vitamins examples include, but are not limited to, water-soluble versions of vitamin B, vitamin B derivatives, vitamin C, vitamin C derivatives, vitamin K, vitamin K derivatives, vitamin D, vitamin D derivatives, vitamin E, vitamin E derivatives, and mixtures thereof.
  • the vitamin compounds may be included as the substantially pure material, or as an extract obtained by suitable physical and/or chemical isolation from natural (e.g., plant) sources.
  • Particulate Materials Nonlimiting examples of particulate materials useful in the present invention include colored and uncolored pigments, interference pigments, inorganic powders, organic powders, composite powders, optical brightener particles, exfoliants and combinations thereof.
  • particulates can be platelet shaped, spherical, elongated or needle-shaped, or irregularly shaped, surface coated or uncoated, porous or non-porous, charged or uncharged, and can be added to the current compositions as a powder or as a pre-dispersion.
  • Particulate materials useful herein include but are not limited to bismuth oxychloride, sericite, mica, mica treated with barium sulfate or other materials, zeolite, kaolin, silica, boron nitride, lauroyl lysine, nylon, polyethylene, talc, styrene, polypropylene, polystyrene, ethylene/acrylic acid copolymer, sericite, aluminum oxide, silicone resin, barium sulfate, calcium carbonate, cellulose acetate, PTFE, polymethyl methacrylate, starch, modified starches such as aluminum starch octenyl succinate, silk, glass, fibers, ground seeds, pumice, and mixtures thereof.
  • Interference pigments for pu ⁇ oses of the present specification are defined as thin platelike layered particles having two or more layers of controlled thickness with different refractive indices that yield a characteristic reflected color from the interference of typically two, but occasionally more, light reflections, form different layers of the platelike particle.
  • the most common examples of interference pigments are micas layered with about 50 - 300 nm films of Ti02, Fe203, silica, tin oxide, and/or Cr203. Such pigments are often pearlescent.
  • Pearl pigments reflect, refract and transmit light because of the transparency of pigment particles and the large difference in the refractive index of mica platelets and, for example, the titanium dioxide coating.
  • Useful interference pigments are available commercially from a wide variety of suppliers, for example, Rona (TimironTM and DichronaTM ), Eckart (e.g. Prestige and Prestige Silk lines).
  • interference pigments with smaller particle sizes, with an average diameter of individual particles less than about 75 microns in the longest direction, preferably with an average diameter less than about 50 microns.
  • Other pigments useful in the present invention provide color primarily through selective abso ⁇ tion of specific wavelengths of visible light, and include inorganic pigments, organic pigments and combinations thereof.
  • inorganic pigments examples include iron oxides, ferric ammonium ferrocyanide, manganese violet, ultramarine blue, and Chrome oxide.
  • Organic pigments can include natural colorants and synthetic monomeric and polymeric colorants. An example is phthalocyanine blue and green pigment. Also useful are lakes, primary FD&C or D&C lakes and blends thereof. Also useful are encapsulated soluble or insoluble dyes and other colorants.
  • Inorganic white or uncolored pigments useful in the present invention, for example Ti02, ZnO, or Zr02, are commercially available from a number of sources.
  • a suitable particulate material contains the material available from U.S.
  • Cosmetics (TRONOX Ti02 series, SAT-T CR837, a rutile Ti02). Particularly preferred are charged dispersions of titanium dioxide, as are disclosed in U.S. Patent No. 5,997,887.
  • the pigments/powders useful herein can be surface treated to provide added stability of color and/or for ease of formulation.
  • suitable coating materials include silicones, lecithin, amino acids, metal soaps, polyethylene and collagen. These surface treatments may be hydrophobic or hydrophilic, with hydrophobic treatments being preferred.
  • Particularly useful hydrophobic pigment treatments include polysiloxane treatments such as those disclosed in U.S. Patent 5,143,722. 16.
  • sugar amine compounds useful in the present invention are described in PCT Publication WO 02/076423 and US Patent No. 6,159,485.
  • Sugar amines can be synthetic or natural in origin and can be used as pure compounds or mixtures of compounds (e.g., extracts from natural sources or mixtures of synthetic materials).
  • Glucosamine is generally found in many shellfish and can also be derived from fungal sources.
  • sacgar amine includes isomers and tautomers of such and its salts (e.g., HCl salt) and is commercially available from Sigma Chemical Co.
  • sugar amines examples include glucosamine, N-acetyl glucosamine, mannosamine, N-acetyl mannosamine, galactosamine, N-acetyl galactosamine, their isomers (e.g., stereoisomers), and their salts (e.g., HCl salt).
  • Preferred for use herein are glucosamine, particularly D-glucosamine and N-acetyl glucosamine, particularly N-acetyl-D- glucosamine 17.
  • Vitamin BA ⁇ ompounds The compositions of the present invention may optionally comprise a safe and effective amount of a vitamin B3 compound.
  • Vitamin B 3 compounds are particularly useful for regulating skin conditions as described in U.S. Patent No. 5,939,082.
  • Exemplary derivatives of the foregoing vitamin B3 compounds include nicotinic acid esters, including non-vasodilating esters of nicotinic acid (e.g., tocopheryl nicotinate, myristyl nicotinate).
  • suitable vitamin B3 compounds are well known in the art and are commercially available from a number of sources (e.g., the Sigma Chemical Company, ICN Biomedicals, Inc., and Aldrich Chemical Company). 18.
  • retinoid includes all natural and/or synthetic analogs of Vitamin A or retinol-like compounds which possess the biological activity of Vitamin A in the skin as well as the geometric isomers and stereoisomers of these compounds.
  • the retinoid is preferably selected from retinol, retinol esters (e.g., C2 - C22 alkyl esters of retinol, including retinyl palmitate, retinyl acetate, retinyl propionate), retinal, and/or retinoic acid (including all-trans retinoic acid and/or 13-cis-retinoic acid), or mixtures thereof.
  • the retinoid is a retinoid other than retinoic acid.
  • Preferred retinoids are retinol, retinyl palmitate, retinyl acetate, retinyl propionate, retinal and combinations thereof. More preferred is retinyl propionate. 19.
  • Peptides and Amino Acids may optionally comprise a safe and effective amount of a peptide, including but not limited to, di-, tri-, tetra-, penta-, and hexa-peptides and derivatives thereof for regulating keratinous tissue.
  • compositions contain preferably from about lxl0 "7 % to about 20%, more preferably from about lxl0 "6 % to about 10%, even more preferably from about lxl0 "5 % to about 5%, by weight of the composition of peptide or amino acid.
  • peptide refers to peptides containing ten or fewer amino acids and their derivatives, isomers, and complexes with other species such as metal ions (e.g., copper, zinc, manganese, magnesium, and the like).
  • metal ions e.g., copper, zinc, manganese, magnesium, and the like.
  • peptide refers to both naturally occurring and synthesized peptides. Also useful herein are naturally occurring and commercially available compositions that contain peptides.
  • More preferred peptides are the dipeptide carnosine (beta-ala- his), the tripeptide gly-his-lys, the pentapeptide lys-tlir-thr-lys-ser, lipophilic derivatives of peptides, and metal complexes of the above, e.g., copper complex of the tripeptide his-gly-gly (also known as Iamin).
  • a preferred commercially available tripeptide derivative-containing composition is Biopeptide CL®, which contains 100 ppm of palmitoyl-gly-his-lys and is commercially available from Sedenna.
  • a preferred commercially available pentapeptide derivative-containing composition is Matrixyl®, which contains 100 ppm of palmitoyl-lys-thr-thr- lys-ser and is commercially available from Sederma.
  • Useful amino acids include but are not limited to aspargine, alanin, indole, glutamic acid, tyrosine, tryptamine and their salts and combinations thereof.
  • Phytosterols examples include ⁇ -sitosterol, campesterol, brassicasterol, D5- avennasterol, lupenol, ⁇ -spinasterol, stigmasterol, their derivatives, analogs, and combinations thereof.
  • the phytosterol is selected from the group consisting of ⁇ -sitosterol, campesterol, brassicasterol, stigmasterol, their derivatives, and combinations thereof. More preferably, the phytosterol is stigmasterol.
  • Phytosterols can be synthetic or natural in origin and can be used as essentially pure compounds or mixtures of compounds (e.g., extracts from natural sources). Phytosterols are generally found in the unsaponifiable portion of vegetable oils and fats and are available as free sterols, acetylated derivatives, sterol esters, ethoxylated or glycosidic derivatives. More preferably, the phytosterols are free sterols.
  • compositions of the present invention may optionally comprise a safe and effective amount of hexamidine compounds, their salts, and derivatives for regulating keratinous tissue.
  • hexamidine derivatives include any isomers and tautomers of hexamidine compounds including but not limited to organic acids and mineral acids, for example sulfonic acid, carboxylic acid, etc.
  • the hexamidine compounds include hexamidine diisethionate, commercially available as Eleastab® HP 100 from Laboratoires Serobi unanimouss. 22.
  • compositions of the present invention may optionally comprise a safe and effective amount of one or more dialkanoyl hydroxyproline compounds and their salts and derivatives for regulating keratinous tissue.
  • Suitable derivatives include but are not limited to esters, for example fatty esters, including, but not limited to tripalmitoyl hydroxyproline and dipalmityl acetyl hydroxyproline.
  • a particularly useful compound is dipalmitoyl hydroxyproline.
  • dipalmitoyl hydroxyproline includes any isomers and tautomers of such and is commercially available under the tradename Sepilift DPHP® from Seppic, Inc.
  • dipalmitoyl hydroxyproline is the triethanolamine salt of dipalmitoyl hydroxyproline.
  • the topical compositions of the present invention may optionally comprise a safe and effective amount of a salicylic acid compound, its esters, its salts, or combinations thereof for regulating keratinous tissue.
  • 24. N-acyl Amino Acid Compounds The topical compositions of the present invention may optionally comprise a safe and effective amount of one or more N-acyl amino acid compounds.
  • the amino acid can be one of any of the amino acids known in the art.
  • the N-acyl amino acid compound is selected from the group consisting of N-acyl Phenylalanine, N-acyl Tyrosine, their isomers, their salts, and derivatives thereof.
  • the amino acid can be the D or L isomer or a mixture thereof Particularly useful as a topical skin tone evening cosmetic agent is N-undecylenoyl-L- phenylalanine.
  • N-undecylenoyl-L-phenylalanine is commercially available under the tradename Sepiwhite® from SEPPIC. 25.
  • DHA Dehydroacetic Acid
  • composition of this invention may optionally comprise a safe and effective amount of dehydroacetic acid or pharmaceutically acceptable salts, derivatives or tautomers thereof for regulating keratinous tissue.
  • dehydroacetic acid is 3-Acetyl-6-methyl-2H- pyran-2,4(3H)-dione.
  • the compound can be commercially purchased from UniversalPreserv-A-
  • Pharmaceutically acceptable salts include alkali metal salts, such as sodium and potassium; alkaline earth metal salts, such as calcium and magnesium; non-toxic heavy metal salts; ammonium salts; and trialkylammonium salts, such astrimethylammonium and triethylammonium. Sodium, potassium, and ammonium salts of dehydroacetic acid are preferred.
  • sodium dehydroacetate which can be purchased from Tri-K, as Tristat SDHA.
  • Derivatives of dehydroacetic acid incude are not limited to, any compounds wherein the CH3 groups are individually or in combination replaced by amides, esters, amino groups, alkyls, and alcohol esters.
  • Tautomers of dehydroacetic acid are the isomers of dehydroacetic acid which can change into one another with great ease so that they ordinarily exist in equilibrium.
  • tautomers of dehydroacetic acid can be described as having the chemical formula C8H804 and generally having the structure above.
  • Skin firming agents are materials that produce an immediate firming or tightening sensation shortly after application to the skin. Further, through this tightening or skin tensing effect, these materials may also provide a visible skin smoothing effect, reducing the appearance of skin texture, fine lines, and wrinkles.
  • skin firming agents useful in the present invention include a ' variety of natural and synthetic polymers, such as those described in US 6.284,233, which is included by reference herein. For example, protein extracts from wheat and peas, or egg albumin are effective skin firming agents. Other materials such as the silicates described in EP 1008340, also included by reference herein, are also suitable for use in the compositions of the present invention. 27.
  • Anti-Dandruff Actives Particulate, crystalline agents dispersed and suspended throughout the topical composition may provide anti-dandruff activity during a shampooing process.
  • Anti-dandruff actives used for this pu ⁇ ose include polyvalent metal salts of pyrithione, salicylic acid, coal tar, pine tar, sulfur, whitfield's ointment, castellani's paint, aluminum chloride, gentian violet, octopirox (piroctone olamine), ciclopirox olamine, undecylenic acid and it's metal salts, potassium permanganate, selenium sulphide, sodium thiosulfate, propylene glycol, oil of bitter orange, urea preparations, griseofulvin, 8-Hydroxyquinoline ciloquinol, thiobendazole, thiocarbamates, haloprogin, polyenes, hydroxypyridone, mo ⁇ holine, benz
  • compositions of the present invention can contain a wide variety of ingredients that are used in conventional product types, provided that they do not unacceptably alter the benefits of the invention. Additionally, these ingredients, when inco ⁇ orated into the composition, should be suitable for use in contact with mammalian keratinous tissue without undue toxicity, incompatibility, instability, allergic response, and the like within the scope of sound judgment.
  • CTFA Cosmetic Ingredient Handbook, Second Edition (1992) describes a wide variety of nonlimiting cosmetic and pharmaceutical ingredients commonly used in the care of keratinous tissue, which are suitable for use in the compositions of the present invention.
  • abrasives examples include: abrasives, absorbents, aesthetic components such as fragrances, pigments, colorings/colorants, essential oils, skin sensates, astringents, etc. (e.g., clove oil, menthol, camphor, eucalyptus oil, eugenol, menthyl lactate, witch hazel distillate), anti-acne agents, anti-caking agents, antifoaming agents, antimicrobial agents (e.g., iodopropynyl butylcarbamate), antioxidants, binders, biological additives, buffering agents, bulking agents, chelating agents, chemical additives, colorants, cosmetic astringents, cosmetic biocides, denaturants, drug astringents, emollients, external analgesics, film formers or materials, e.g., polymers, for aiding the film-forming properties or substantivity of the composition (e.g., copolymer of eico
  • composition forms The physical form of the topical compositions is not critical.
  • the topical compositions of the present invention can be in any form known in the art, including but not limited to solutions, suspensions, dispersions, emulsions, and combinations of these.
  • emulsion carriers including but not limited to oil-in-water, water-in-oil, water-in-oil-in-water, and oil-in-water-in-oil emulsions are useful herein.
  • a given component will distribute primarily into either the water or the oil phase, depending on water solubility/dispersibility of the component in the composition.
  • Preferred emulsions are oil-in-water emulsions and water-in-oil emulsions, especially when all or a portion of the oil phase is a silicone or blend of silicones. Water in oil emulsions may extend the duration of the perceived warmth of the composition when applied to the keratinous tissue.
  • the composition is an water in oil emulsion wherein the majority of the oil is silicone.
  • This type of composition is often called water-in-silicone emulsions.
  • emulsifiers useful in the emulsions of this invention are given in McCutcheon's. Detergents and Emulsifiers. North American Edition (1986), published by Allured Publishing Co ⁇ oration; U.S. Patent 5,011,681; U.S.
  • Patent 4,421,769; and U.S. Patent 3,755,560 Exemplary carriers and such other ingredients that are suitable for use herein are described, for example, in U.S. Patent No. 6,060,547.
  • the duration of the perceived warmth can also be extended by the inclusion of one or more waxy materials with melting points of about 30°C to about 80°C.
  • Such compositions contain greater than about 1%, more preferably greater than about 2.0%, even more preferably greater than about 2.5% by weight of the composition of one or a combination of such waxy materials.
  • these waxy materials melt when the composition is heated in the sachet and then, when applied to the keratinous tissue, the melted waxy materials re- crystallize releasing heat and thus reducing the cooling rate of the product on the surface.
  • the topical compositions of the present invention can exhibit a wide range of viscosities, depending on the type and level of thickening or structuring agent or agents included in the formulation.
  • compositions can range from very thin and flowable (liquids, milks, lotions, serums, thin gels) to thicker products (creams, thicker gels, pastes, ointments) to even semi-solid and solid (powders, sticks).
  • Viscosity as measured using commercially available viscometers/rheometers (for example, the Brookfield model series DV-II and DV-III viscometers from Brookfield Engineering Laboratories, Inc) is one known way to characterize the thickness of a composition.
  • the viscosity of the topical composition is between 10,000 cps and 500,000 cps when measured at the target temperature of the topical composition.
  • the viscosity of the topical composition at it's target temperature is at least 50% of the viscosity of the topical composition at 22°C, even more preferably at least 80%.
  • the topical compositions herein can be cleansers, including, but not limited to, shampoos, body washes, liquid soaps, and scrubs.
  • the topical compositions can also be moisturizers; anti- aging products; sunscreens; pharmaceutical products; dermatological products; hair colorants; hair conditioners; antiperspirants; deodorants; toothpaste; cosmetics, including but not limited to foundation, blush mascara, lipstick and nail polish; depilatories; patches, masks; and massage products.
  • compositions of the present invention are generally prepared by conventional methods such as are known in the art of making topical compositions. Such methods typically involve mixing of the ingredients in one or more steps to a relatively uniform state, with or without heating, cooling, application of vacuum, and the like.
  • compositions are preferably prepared such as to optimize stability (physical stability, chemical stability, photostability) and/or delivery of the active materials.
  • This optimization may include appropriate pH (e.g., less than 7), exclusion of materials that can complex with the active agent and thus negatively impact stability or delivery (e.g., exclusion of contaminating iron), use of approaches to prevent complex formation (e.g., appropriate dispersing agents or dual compartment packaging), use of appropriate photostability approaches (e.g., inco ⁇ oration of sunscreen/sunblock, use of opaque packaging), etc.
  • appropriate pH e.g., less than 7
  • exclusion of materials that can complex with the active agent and thus negatively impact stability or delivery e.g., exclusion of contaminating iron
  • approaches to prevent complex formation e.g., appropriate dispersing agents or dual compartment packaging
  • use of appropriate photostability approaches e.g., inco ⁇ oration of sunscreen/sunblock, use of opaque packaging
  • a silicone elastomer blend from Dow Corning Co ⁇ oration 2 A silicone elastomer blend from ShinEtsu 3 A silicone gum blend from Dow Corning Co ⁇ oration 4 A spherical polyethylene powder from Equistar 5 A layered mica/titanium dioxide/tin oxide interference pigment from Eckart 6 A sodium acrylate/acryloyldimethyl taurate copolymer thickening agent from Seppic 7 An acrylates/C 10-30 alkyl acrylate crosspolymer fromNoveon 8 A polyacrylamde based copolymer (with some sulfonic acid functionality) from Seppic 9 A liquid preservative blend from Lonza In a suitable vessel, combine the Carbopol and water phase ingredients, and then blend until uniform.
  • the dipalmitoyl hydroxyproline premix and/or undecylenoyl phenylalanine premix by combining the premix ingredients in a suitable container, heating to about 70°C while stirring, and cooling to room temperature while stirring.
  • Palmitoyl-lysine-threonine-threonine-lysine-serine available from Sederma 2 KSG-21 is an emulsifying silicone elastomer available from Shin Etsu 3
  • a silicone elastomer dispersion from Dow Corning Co ⁇ 4 Abil EM-97 available from Goldschmidt Chemical Co ⁇ oration In a suitable vessel, blend the Phase A components together with a suitable mixer (e.g., Tekmar model RW20DZM) and mix until all of the components are dissolved.
  • a suitable mixer e.g., Tekmar model RW20DZM
  • Phase B components blend the Phase B components together in a suitable vessel and mill using a suitable mill (e.g., Tekmar RW- 20) for about 5 minutes.
  • a suitable mill e.g., Tekmar RW- 20
  • a suitable mixer e.g., Tekmar RW-20
  • prepare the undecylenoyl phenylalanine premix and/or Phase E by combining all ingredients, heating the ingredients to 70°C while stirring, and cooling back to room temperature while stirring. Add the undecylenoyl phenylalanine premix and/or Phase E to Phase A while mixing.
  • Example 35 Disposable wipe Prepare an emulsion (Composition A) containing about 96.4% water, 2% silicone oil, 0.15% carboxylic acid ' polymeric emulsifier, 1% water soluble alkylene polyol, 0.1% chelating agent, 0.2% anti-microbial agent, 0.15% organic base pH-adjusting agent, and fragrance in the following manner.
  • Composition A a standard size, 55 gallon, covered cylindrical drum fitted with a single shaft having dual propeller blades, driven by a motor rated at 1750 ⁇ m, to prepare the emulsion.
  • the shaft extends substantially through the depth of the drum (about 4 feet) and has a first blade that is positioned near the bottom of the drum and a second shaft positioned about 1 foot above the first blade.
  • the first blade has a diameter approaching that of the drum diameter (about 2 feet), and the second blade has a diameter of about 1 foot.
  • Charge the drum with 40 to 48 gallons of tap water. Begin agitation of the water by operating the motor at its maximum rated speed. Continue agitation at this speed throughout the entire process. Slowly add 0.52 lbs. Pemulen® TR-2 to allow mixing of the emulsifier with the water sufficient to disperse or avoid the formation of lumps of the emulsifier.
  • Suitable adhesives have a wet strength that is sufficient for the plies to remain substantially bonded in use.
  • the sachets utilized herein comprise a plurality of surfaces defining at least one chamber for containing the composition. Thus while sachets having only one chamber are frequently used, a plurality of chambers or multi-chambered sachets can also be used in the present invention. Typically, one or more of the sachet surfaces has low thermal resistance.
  • sachets having a variety surfaces with varying thermal resistance will heat quickly and evenly.
  • the sachet may be manufactured utilizing a wide variety of materials alone or in combination.
  • the surfaces of the sachet can be thick or thin. Materials can also be chosen to provide the desired thermal resistance, resistance to light, oxygen barrier, and moisture barrier.
  • the sachet in whole or in part comprises films, formed from plastics, polymers, and foils, in single layers, multiple layers, blended or metalized and combinations thereof.
  • Examples of these materials are polyolefins, polyesters, nylon, polypropylene, polyethylene, ethylene vinyl acetate, metalized PET(polyethylene terephthalate), aluminum foil, EVOH (ethylene-vinyl alcohol copolymer), PVDC (polyvinylidene chloride), etc.
  • Other materials can be used including but not limited to cardboard.
  • An example of a material used for the sachet is a co-extruded film polypropylene on the outside and polyethylene/ethylene vinyl acetate blend on the inside as the sealant layer. Similar sachets are available from Flexpaq, South Plainfield, NJ. Various means of opening a sachet are known in the art and can be used with the sachets disclosed herein.
  • the sachet can be designed to burst or rupture to release the topical composition contained within the sachet at a comparatively low force when desired by the consumer. This may be accomplished by having the sachet be a sealed pouch with both permanent seals and also seals that are "frangible", i.e., rupturable. When the sachet is squeezed, the frangible seal will yield or fail first since it has a lower peel force to break the seal apart than the permanent seals.
  • Adding stress concentrators in the seal geometry that will localize forces at a particular location can optimize the location of rupture. For example, pressurizing a pouch-form sachet having a V-notch seal will localize forces first at the apex of the V, causing that region to rupture first. Additionally, other seal angles and geometries of the seal can also be used to tailor dispensing forces for removal of topical composition from a sachet for particular applications. Additional discussion of rupturable seals, including their manufacture appears in US 6,508,602.
  • the embodiment of the sachet shown in Figure 5a is a thermoformed blister pack 500 with a tear-off tab 510 that allows the topical composition to be dispensed when the tear-off tab 510 is removed along a line of weakness 540.
  • This style of sachet is made by thermoforming, from a sheet of material, a front surface 550 of the sachet such that it forms a small chamber 520 to contain the topical composition. The chamber 520 is then filled and another layer of material, which forms the rear surface 530, is then sealed around the perimeter 560 of the chamber to contain the topical composition until ready to be used.
  • Figures 5b through 5d provide further views of this embodiment.
  • Figure 5e illustrates a cross-sectional view of the sachet of Figure 5a taken along line A-A, showing the topical composition 560 within the chamber 520.
  • Other means of making sachets, pouches, packets, blisters, cells, thermoformed cups, sachets, and other sachet forms to contain a liquid, gel or solid are known in the art and can be used to make suitable reservoirs for this application.
  • a sachet can comprise a plurality of compartments. Such "dual" or multiple compartment sachets are useful in a number of applications, especially when two incompatible products are to be applied.
  • Figure 6a depicts another embodiment of the sachet 600 that is functionally similar to that of Figure 5a, but includes a plurality of chambers 620 and 621 separated by seal 622.
  • Figure 6b is a cross sectional view of the sachet shown in Figure 6a taken along line A-A for containing topical compositions 670 and 671 and including the respective headspaces 680 and 681, shown in Figure 6b.
  • Respective chambers 620 and 621 may include topical composition(s) that are the same, similar, or diverse.
  • the seal 622 separating the chambers 620 and 621and the perimeter seal 660 may be designed to be ruptured sequentially or simultaneously depending on the peel force and on how pressure or squeezing is applied by the user.
  • Sachets such as the sachet shown in Figure 6a, having multiple chambers can also be designed for mixing incompatible topical compositions. This would allow the sachet to deliver multiple benefits such as cleansing from one chamber and moisturizing from another.
  • the chamber containing the cleanser would be dispensed first to allow cleansing of the hair, nails, face, hands, or body and the second chamber containing the moisturizer is dispensed next to allow deep moisturizing of the hair, nails, face, hands, or body.
  • a reaction such as foaming or additional self-heating could be accomplished by dispensing two topical compositions from the sachet that will react when mixed during dispensing.
  • a dual compartment sachet could have one chamber containing sodium bi-carbonate and another chamber containing a water based cleanser such that when the two components meet they create a foaming topical composition.
  • the sachets may also contain a singular product that due to instability of the components upon mixing requires combining its components just prior to application. In such examples, these components can be separated into a plurality of the sachet's chambers. Rupturable seals that separate these chambers can be burst by the user, allowing the composition to be freshly mixed just prior to their application.
  • Figure 7a illustrates sachet embodiment 700 with two compartments 723 and 724, the seal 725 dividing 723 from 724 being at the vertical midline.
  • the sachet has a tear-off tab 710, removed at line of weakness 740.
  • Topical compositions contained in compartments 723and 724 can be mixed upon exit from the sachet.
  • Figures 7b and 7c further illustrate sachet 700. While amounts sufficient for multiple uses of the composition may be contained in the sachet disclosed herein, in one embodiment, the sachet is designed for a single use, i.e. a unit dose.
  • a unit dose can be applied to the entire keratinous surface of the user, for example, the entire skin, hair or nail surface, or can be a spot application, a unit dose can very from 0.1 gram to 30 grams.
  • the perimeter or seals of the sachet can be made to create a dispensing outlet to allow the topical composition to be more precisely controlled when dispensing. This allows more precise dispensing but can also be used to require a reasonable dispensing force before product can be dispensed. By narrowing the outlet, the product can be kept from leaking out of the reservoir unless substantial force is applied to the reservoir when desired by the user to dispense the product.
  • Advantages of the present invention utilizing a sachet include minimizing exposure of the composition to these degrading conditions both prior to heating and by the nature of the sachets having limited volume after heating and application to the keratinous tissue. This promotes efficacy of the composition and, or its active ingredients that may have been avoided in the past due to their susceptibility to degradation.
  • An additional benefit to heating of a sealed sachet, is that spillage into the device is eliminated.
  • the sachet may be produced with limited or no headspace, and/or with a non-oxidizing gas other than air, such as nitrogen,
  • the sachet in some embodiments may be flexible, while in others it is rigid. Flexible sachets when placed in an appropriately shaped receptacle deform around a heat sink in the receptacle to allow for maximum efficiency of heat transfer to the sachet and ultimately to its contents. Flexible sachets can also be easily dispensed by squeezing the contents into the hand.
  • a rigid bliste ⁇ ack with a flexible film back cover can provide a disk that allows product to be dipped out with the fingers after the back cover sheet is removed.
  • Heat transfer to and from the sachet and its contents is important both during heating and during use because it determines how quickly the sachet and its contents warm and cool. Since heat transfer to the topical composition within a sachet is a function of the thermal resistance of the material comprising the sachet, choosing the sachet surface materials carefully allows the composition in the sachet to be heated in a desired time frame and can be maintained at a desired temperature in the receptacle for immediate use on keratinous tissue. For example, increasing the thickness of the sachet surface increases the thermal resistance of that surface.
  • the higher thermal resistance reduces the rate of heat transfer through the surface to the composition.
  • a sachet with thicker surfaces then, will take longer to warm the composition to a specific temperature, but will retain the warmth of the composition for a longer period of time.
  • Thermal resistance is also affected by a material's thermal conductivity. Materials with higher thermal conductivities can be used to decrease the surfaces' thermal resistance. Materials with lower thermal conductivities can be used to make surfaces with higher thermal resistance.
  • the heat transfer area also affects thermal resistance of the sachet surface. As the area increases, the thermal resistance decreases. Larger heat transfer areas decrease the heating and cooling time of the sachets. Combinations of materials comprising the same sachet are also contemplated. For example one surface of the sachet may have higher thermal resistance.
  • the sachet may comprise at least one surface that is coated or embedded with a volatile material. When the sachet is heated, the volatile material, such as perfume, scents the surrounding air.
  • sachet surfaces Materials which change color or level of opacity when the topical composition has been warmed may optionally be used in sachet surfaces. This would result in a visual signal based in the sachet surfaces.
  • One embodiment of the sachet comprises a solid including powder, beads minerals, etc.
  • one of the sachet surfaces may comprise an applicator for the topical composition.
  • the surface to be used as an applicator can comprise a portion that is a sponge-like material. This sponge-like portion will ensure that the topical composition is evenly applied to the user's keratinous tissue.
  • the applicator can take the form of a brush, a dropper, or a syringe.
  • the sachet comprises topical compositions in combination with a substrate to effect cleaning, treating, or other uses.
  • the composition is pre-combined with the substrate or towelette to form a wipe product, e.g., disposable wipe products, to be used for such pu ⁇ oses at a later time.
  • the wipe product includes a nonwoven substrate impregnated with a topical composition inside the sachet.
  • the sachet may be made in a variety of shapes, including but not limited to pouches, packets, cells, blisters, thermofonned cups, capsules, ampoules, box-shapes, cones, balloon shapes, bellows shapes, flexible or rigid pouches with a multiplicity of sides, syringes, droppers, or vials.
  • the sachet may be flat, rounded or combinations thereof.
  • Receptacle comprising a heating system, comprises a cavity for releasably receiving the sachet.
  • the heating system utilized herein comprises a heating element associated with a cavity wall. Alternatively, the heating element can be associated with a plurality of cavity walls.
  • the heating element can extend from the cavity wall adjacent to the source of power, extending laterally along the walls of the cavity or completely about the entire internal surface of the receptacle.
  • the heating element and/or heat sink can be positioned in the center of the cavity such that a sachet can be placed on each side and heated simultaneously.
  • the heating system is activated by means of a manual switch.
  • the heating system activates upon insertion of a sachet into the cavity of the receptacle thereby engaging a switch in communication with an internal wall of the cavity.
  • the area of the sachet that engages the switch is referred to as a "contact point".
  • Figure 8a shows sachet embodiment 800 with contact point 890, designed to activate the heating system by means of a switch located in the bottom of the cavity in some embodiments of the receptacle.
  • Figure 8b is a side view and
  • Figure 8c is a perspective view of sachet 800, both further illustrating contact point 890.
  • a heat sink in communication with the heating element
  • temperature sensors optionally in communication with the heat sink.
  • a thermal cutoff or fuse between the heating element and the power source can be used.
  • Indicators comprising visual feedback mechanisms, auditory feedback mechanisms, tactile feedback mechanisms and combinations thereof, can be operatively associated with a temperature sensor, a monitor, and combinations thereof.
  • a monitor can be used to control all functions of the heating systems including the indicator.
  • the monitor can comprise a microprocessor, microcontroller, timer, or sensor as well as other elements.
  • the heating system activates upon insertion of a sachet having one or more protrusions on its exterior surface.
  • the protrusions provide communication with switches located in the walls of the cavity.
  • the protrusions can provide a "lock and key function" to avoid accidentally turning on the heating system by the insertion of foreign objects into the device, avoiding melting such objects and destroying the receptacle.
  • a sensor in the receptacle wall recognizes the presence of the sachet and activates the heating element. When the sachet is removed the heating element is deactivated and the receptacle ceases to provide warmth. Sensors can be based on changes in the resistance, capacitance, inductance, light transmission, force, pressure, voltage, current or other means when the sachet is present as opposed to when it is not.
  • a photodiode receiving light from a light emitting diode (LED) could be covered by the sachet, changing the output signal of the photodiode. This change in light intensity could be used to control the heater.
  • a sachet having the right properties to change the desired sensor signal could provide a lock and key function.
  • Warming of the topical composition to its target temperature occurs in about 30 seconds to about 5 minutes, preferably in about 30 seconds to about 2 minutes.
  • the target temperature of the composition is between about 30°C and about 65°C, preferably between about 35°C and about 65°C, more preferably between about 37°C and about 60°C, most preferably between about 40°C and about 55°C.
  • the heating system maintains the target temperature of the composition for a predetermined length of time. This length of time is from about 1 minute to about 1 hour minutes, preferably about 3minutes to about 30 minutes.
  • a heat sink in contact with the heating element may optionally be used to transfer and distribute heat generated by the heating element.
  • a temperature sensor may be in communication with the heat sink, and a monitor may be in communication with the temperature sensor. When the temperature sensor generates a signal that the heat sink is over its operational temperature for a designated period of time, the monitor can adjust or interrupt the power to the heat sink allowing it to cool, thereby lowering the temperature of the composition within the sachet into its desired temperature range.
  • This interruption of power delivery to the heating element can function as a thermostat, a safety feature and a power saving feature. If the sachet has been heated for a predetermined length of time at a specific temperature without removal of the sachet, warming is discontinued until the sachet is removed and replaced or until the heating element is activated in some other way. If, on the other hand, the temperature sensor generates a signal that the heat sink is below its operational temperature, the monitor can adjust the power to the heat sink to raise heat, thereby raising the temperature of the composition within the sachet into its desired range.
  • Heating elements preferred for use in the invention disclosed herein are electrical resistance heaters.
  • resistive alloy wire or foil examples include, resistive alloy wire or foil, thermally conductive plastics, carbon/silver inks printed onto polyester or other flexible materials, etched foil heaters, Positive Temperature Coefficient Heaters (PTC) (ceramic stones), thick film heaters, or electrical components that give off heat due to electrical resistance to current flow.
  • PTC Positive Temperature Coefficient Heaters
  • Specific types of resistive alloy wire or foil type electrical resistance heaters which can be selected are: rope/wire elements in metal tubes, rope/wire elements insert molded into heater assemblies, wire wound heaters, LCD heaters and ceramic fiber insulated wire heaters.
  • Other heater types suitable for use in the invention disclosed herein are: Peltier junction heaters, microwave emitters, radiant heating elements, light bulbs, and heat lamps.
  • Power itself can be supplied by various sources: AC or DC power mains, battery, solar power, combustible gases, chemical reaction, or any combination of these.
  • Combustible gases useful in the present invention include those that are known for use in portable butane-fired hair curling devices.
  • the receptacle comprises an indicator, the indicator being operatively associated with the temperature sensor, monitor or timer.
  • the indicator produces a signal when the topical composition reaches its target temperature or at the end of a predetermined period.
  • the indicator can signal “warming”, “warm”, “ready”, “maintaining” "on” or “off.
  • the signal given by the indicator can be a visual signal, an audio signal or a combination or these.
  • Material selection and thermal resistance of the receptacle also affect its performance. For example, the heat sink, if present, would have low thermal resistance and should store minimal heat if it is to warm the sachet quickly.
  • the walls of the receptacle cavity should be made of a material that is rated for the required temperatures and voltages that the receptacle could experience. Underwriters' Laboratories Inc. provides rating of these materials.
  • the walls of the receptacle cavity can have higher thermal resistance to prevent heat loss to the ambient environment.
  • heat sinks are commonly used in the receptacles disclosed herein, some examples do not require one.
  • a flexible film heater made of carbon and silver printed on polyester can quickly and efficiently heat a sachet if it is placed directly in communication with the sachet.
  • Such heaters produced by Conductive Technologies, Inc., York, PA, are used in medical applications to heat intravenous fluids to body temperature. These heating systems are positive temperature coefficient heaters as well.
  • Figure la illustrates an embodiment of the receptacle 100 disclosed herein.
  • the receptacle 100 shows a sachet 101 in place inside the cavity 114 of the receptacle.
  • the power is U.S. household electric current (110-120V) conducted through the plug 113.
  • Figure lb illustrates a right side view of the embodiment of Figure la with no sachet in place.
  • Figure lc is a top plan view of the receptacle of Figure la, showing front housing 111, cavity 114, plug 113 and rear housing 115.
  • Figure Id is an exploded view of Figure la, without the sachet in place.
  • the front housing 111 and the rear housing 115 enclose a printed circuit board 116 that contains a microcontroller.
  • the microcontroller stores and executes software instructions that govern all other components.
  • a heating element 117 is operatively associated with a heat sink 118.
  • a switch 119 is depressed upon insertion of the sachet to activate the heating element 117.
  • Inner plate 110 forms the back wall of the cavity 114 for containing the sachet.
  • a sachet rest 121 is mounted on the front surface of inner plate 110.
  • Light emitting diode (LED) 123 signals whether receptacle 100 is in ramping mode or holding mode, discussed below.
  • Item 122 is silicone rubber insulation, protecting the printed circuit board (PCB) from the heating element.
  • Resistance temperature detectors (RTD) 127 which measure the temperature of the heating element or heat sink.
  • the TCO used in the device has a UL rated function temperature of 120°C.
  • Item 119 is a switch. The switch extends into the cavity 114 that receives the sachet. Upon insertion of the sachet, the switch 119 is triggered, activating the heating element 117. Plug, 113 connects the heating element 117 to electric current.
  • Figure 2a illustrates a second embodiment of the receptacle 200 disclosed herein. In this example, the receptacle contains a battery 233 shown in Figure 2c.
  • the front housing 211 of the receptacle 200 encloses the front portion of cavity 214.
  • Figure 2b illustrates a right side view of the embodiment of Figure 2a showing rear housing 215 of the receptacle 200.
  • Figure 2c is a cross sectional view of Figure 2a taken along line A-A.
  • the front housing 211 and the rear housing 215 enclose cavity 214 and the heating system (not shown).
  • Figure 2d is a top plan view of the receptacle 200 of Figure 2a.
  • Figure 2e shows the rear housing 215 of receptacle 200.
  • Item 250 is an opening in the rear housing which allows mounting of the receptacle via a suitable hanger.
  • Figure 3a shows a third embodiment of the receptacle disclosed herein.
  • This receptacle 300 is designed to heat two sachets simultaneously. These sachets can comprise topical compositions which are the same or different. Items 314a and 314b are two areas within the receptacle cavity for sachet insertion.
  • Figure 3b is a top plan view further illustrating receptacle 300.
  • Figure 4a shows another embodiment in which a receptacle 400 is mounted for recharging on a docking station 431 that is connected to electrical current via plug 413.
  • Figure 4c is a cross sectional view of the receptacle with docking station taken along line A-A of Figure 4b which is a top plan view of 400. This cross section shows a battery 433 which can be recharged while mounted on the docking station 431.
  • FIG. 4d shows a left side view, further illustrating receptacle 400.
  • the heating cycle may optionally, consist of two distinct modes, a ramping mode, when the sachet and its contents are being warmed and a holding mode. During the holding mode the sachet and its contents are held at a constant temperature. If the sachet is removed at any time during the heating cycle, the heater will be turned off.
  • a Resistance Temperature Detector (RTD) 127 shown in Figure Id measures the temperature at the heater to heat sink junction.
  • RTD Resistance Temperature Detector
  • the microprocessor within the Printed Circuit Board 116, calculates a ramp rate for the heater, such that the sachet and its contents attain a temperature of 50°C in 3 minutes. After the ramping mode is complete, the holding mode is entered. During the holding mode, the temperature of the heater is set to 60°C for 15 minutes. If the sachet is not removed after 15 minutes, the heater turns off. The user must remove the sachet and re-insert if the receptacle is to start heating again. Should the sachet be re-inserted, the heating cycle will repeat.
  • Figure 9a is a perspective view of a fifth embodiment of the receptacle 900 having two heating elements and two heat sinks, front housing 911, rear housing 915, and plug 913.
  • Figure 9b is a front plan view of receptacle 900 showing front housing 911.
  • Figure 9c is a cross sectional view of receptacle 900 taken along line B-B of Figure 9b.
  • Items 917a and 917b are heating elements.
  • Items 991a and 918b are heat sinks for the heating elements to which they are adjacent. Materials which change color or level of opacity when the topical composition has been warmed may optionally be used in the receptacle. This would result in a visual signal based in the receptacle.
  • the method of treating keratinous tissue comprises as a first step, warming a topical composition contained in a sachet using a receptacle, as described above.
  • the power source supplies sufficient energy to the heating system to warm the composition inside the sachet to a target temperature sufficient to provide easy application to the keratinous tissue but not so fluid as to run off the surface when applied. Generally the temperature is from about 30°C to 65°C.
  • the warmed composition is removed from the sachet and applied to keratinous tissue.
  • the topical composition can be chronically applied.
  • chromenic topical application continued topical application of the composition over an extended period, preferably for a period of at least about one week, more preferably for a period of at least about one month, even more preferably for at least about three months, even more preferably for at least about six months, and more preferably still for at least about one year.
  • applications would be on the order of about once per day; however application rates can vary from about once per week up to about three or more times per day.
  • a skin care regimen using a receptacle as described above, comprises selecting a sachet from a sachet assortment, inserting the sachet into the receptacle for releasably receiving the sachet, and activating the heating system operatively associated with the receptacle
  • the topical composition is then warmed in the sachet. After warming, the sachet is opened and the warmed composition is applied to a user's skin.
  • a schedule of chronic application of the topical composition similar to that outlined above, can be used in the skin care regimen.

Landscapes

  • Cosmetics (AREA)

Abstract

L'invention concerne un procédé de traitement d'un tissu kératineux. Le traitement utilise au moins une composition topique à appliquer audit tissu, un sachet contenant la composition topique et un récipient équipé d'un système de chauffage pour loger de manière libérable au moins un sachet.
EP05725298A 2004-03-11 2005-03-09 Traitement de tissu keratineux Withdrawn EP1722656A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/798,473 US20050220828A1 (en) 2003-10-31 2004-03-11 Treatment of keratinous tissue
PCT/US2005/008053 WO2005087043A1 (fr) 2003-10-31 2005-03-09 Traitement de tissu keratineux

Publications (1)

Publication Number Publication Date
EP1722656A1 true EP1722656A1 (fr) 2006-11-22

Family

ID=37106359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05725298A Withdrawn EP1722656A1 (fr) 2004-03-11 2005-03-09 Traitement de tissu keratineux

Country Status (3)

Country Link
EP (1) EP1722656A1 (fr)
CN (1) CN1929759A (fr)
CA (1) CA2559877A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114425285A (zh) * 2020-10-29 2022-05-03 中国石油化工股份有限公司 一种微胶囊相变储能材料及其制备方法和应用

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Publication number Priority date Publication date Assignee Title
PT2506827E (pt) * 2009-11-30 2013-11-05 Inoflex Ab Composição aquosa lúbrica
KR101990924B1 (ko) * 2012-12-07 2019-09-30 (주)아모레퍼시픽 스퀴즈 타입 마스카라 용기

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005087043A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114425285A (zh) * 2020-10-29 2022-05-03 中国石油化工股份有限公司 一种微胶囊相变储能材料及其制备方法和应用

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CN1929759A (zh) 2007-03-14
CA2559877A1 (fr) 2005-09-22

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