CN117813076A

CN117813076A - Oil-in-water type cleaning composition

Info

Publication number: CN117813076A
Application number: CN202280056057.6A
Authority: CN
Inventors: 宫原令二; 野口加奈子
Original assignee: Shiseido Co Ltd
Current assignee: Shiseido Co Ltd
Priority date: 2021-09-16
Filing date: 2022-09-02
Publication date: 2024-04-02
Also published as: WO2023042687A1

Abstract

The oil-in-water type cleaning composition comprises a lamellar gel phase, 3 to 80 mass% of an oil phase, and an aqueous phase. The lamellar gel phase contains a 1 st nonionic surfactant having a hydrophobic portion on both sides of a hydrophilic portion, and a 2 nd nonionic surfactant having an HLB of 7 to 15.

Description

Oil-in-water type cleaning composition

RELATED APPLICATIONS

The present invention is based on the japanese patent application: priority claims of japanese patent application No. 2021-151332 (application No. 2021, 09, 16), the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to oil-in-water cleaning compositions.

Background

Conventionally, lamellar gel-containing skin external preparations have been used in which lamellar gel (α gel) formed from a higher fatty alcohol, a higher fatty acid and a hydrophilic surfactant is used for the purpose of maintaining emulsion stability of skin external preparations such as cosmetics, medical external preparations and medicines (for example, refer to patent document 1 and non-patent document 1).

Patent document 1 discloses an α -gel forming composition which is produced by adding water to a composition containing (a) 1 or 2 or more higher fatty alcohols and/or higher fatty acids having 16 or more carbon atoms in an amount of 25 to 50% by mass, (B) 40 to 70% by mass of polyoxyethylene sterol ethers represented by specific formulas, and (C) 5 to 20% by mass of polyoxyethylene dialkyl esters and/or ethers represented by specific formulas.

Non-patent document 2 shows that, among the oils used for makeup removing oil, low-viscosity low-molecular-weight oil is suitable.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open publication No. 2017-132709

Non-patent document 1: kei Watanabe et al, J.Oleo Sci.,61,29-34 (2012)

Non-patent document 2: jin Tian, J.Soc.Cosmet.chem.Jpn. , CD-ROM drive 39 (1) 3-9 (2005)

Disclosure of Invention

Problems to be solved by the invention

The following analysis is given from the point of view of the present disclosure.

Among the cleansing materials used for cleansing make-up cosmetics, low-molecular-weight oily components having low viscosity are suitable as shown in non-patent document 2. However, the low molecular weight oily component also readily dissolves the surfactant. Therefore, in the oil-in-water type cleaning material, if the low molecular weight oily component is emulsified, there is a problem in stability that the emulsified particles are agglomerated with time.

For this reason, in order to improve emulsion stability, a lamellar gel-containing composition using a lamellar gel (α gel) formed from a higher fatty alcohol or a higher fatty acid and a hydrophilic surfactant as described in patent document 1 has been used. However, the lamellar gel described in patent document 1 gives a feeling of sliminess during application when applied to the skin, and the user cannot obtain a fresh feeling of use. Further, such a composition containing lamellar gel has a problem that higher alcohols and higher fatty acids are likely to precipitate as crystals over time (for example, refer to non-patent document 1).

Therefore, an oil-in-water type cleansing composition which can stably emulsify an oily component having a low molecular weight, has high stability, and is excellent in further feeling in use has been demanded.

Means for solving the problems

According to viewpoint 1 of the present disclosure, there is provided an oil-in-water type cleansing composition comprising a lamellar gel phase, 3 to 80% by mass of an oil phase, and an aqueous phase. The lamellar gel phase contains a 1 st nonionic surfactant represented by the formula shown in the following formula 1 and a 2 nd nonionic surfactant having an HLB of 7 to 15.

In the formula shown in formula 1, R ¹ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. R is R ² Is an alkylene group having 2 to 4 carbon atoms. R is R ³ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. k represents an integer of 4 to 15.

Chemical 1:

ADVANTAGEOUS EFFECTS OF INVENTION

The oil-in-water type cleansing composition of the present disclosure can stably emulsify even low molecular weight oily components. Thus, the oil-in-water type cleaning composition of the present disclosure has high cleaning properties.

The oil-in-water type cleaning composition of the present disclosure suppresses crystallization of the contained component and has high stability with time.

According to the oil-in-water type cleaning composition of the present disclosure, a user can obtain a good feel after use.

Drawings

Fig. 1 is a small-angle wide-angle X-ray scattering chart and a differential calorimetric chart in test example 1.

Fig. 2 is a small-angle wide-angle X-ray scattering chart and a differential calorimetric chart in test example 2.

Fig. 3 is a small-angle wide-angle X-ray scattering chart and a differential calorimetric chart in test example 3.

Fig. 4 is a small-angle wide-angle X-ray scattering chart and a differential calorimetric chart in test example 4.

Fig. 5 is a graph comparing melting enthalpies in test examples 1 to 4.

FIG. 6 is a photograph showing the solubility test of an oily component in test example 5.

Fig. 7 is the result of the usability test in test example 7.

FIG. 8 is the result of the usability test in test example 7.

Detailed Description

Preferred embodiments of the above viewpoints are described below.

According to a preferred mode of the above-mentioned viewpoint 1, the 1 st nonionic surfactant and the 2 nd nonionic surfactant constitute at least a part of the lamellar gel phase.

According to the preferred mode of the above-mentioned viewpoint 1, the oil phase is emulsified by the lamellar gel phase.

According to the preferred embodiment from the viewpoint 1, the mass of the 1 st nonionic surfactant is 0.1 to 10% by mass based on the mass of the cleaning composition. The 2 nd nonionic surfactant is 0.5 to 6 parts by mass based on 1 part by mass of the 1 st nonionic surfactant.

According to a preferred embodiment of the above-mentioned viewpoint 1, the 1 st nonionic surfactant is polyethylene glycol distearate having k of 4 to 8 represented by the formula of formula 1.

According to a preferred embodiment of the above-mentioned point 1, the 2 nd nonionic surfactant is at least 1 selected from the compounds represented by the following formulas 2 to 5.

In the formula shown in the formula 2, R ⁴ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. R is R ⁵ Is an alkylene group having 2 to 4 carbon atoms. l represents an integer of 5 to 20.

Chemical 2:

in the formula shown in formula 3, R ⁶ 、R ¹⁰ And R is ¹⁴ Alkylene groups each having 2 to 4 carbon atoms. R is R ⁷ 、R ¹¹ And R is ¹⁵ Alkylene groups each having 8 to 12 carbon atoms. R is R ⁸ 、R ¹² And R is ¹⁶ Alkyl groups having 4 to 8 carbon atoms. R is R ⁹ 、R ¹³ And R is ¹⁷ A polymer of 12-hydroxystearic acid or a polymer of an alkylene polyol, respectively. m, n and o are natural numbers, respectively. The sum of m, n and o is 10 to 60.

Chemical 3:

in the formula shown in the formula 4, R ¹⁸ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. R is R ¹⁹ And R is ²⁰ Alkylene groups each having 2 to 4 carbon atoms. p and q are natural numbers, respectively. The sum of p and q is 5 to 20.

And (4) chemical treatment:

in the formula shown in the formula 5, R ²¹ 、R ²² 、R ²³ And R is ²⁵ Alkylene groups each having 2 to 4 carbon atoms. r, s, t and u are natural numbers, respectively. The sum of r, s, t and u is 5 to 30.R is R ²⁴ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms.

And (5) chemical treatment:

according to the preferred mode of the above-mentioned viewpoint 1, the lamellar gel phase has a high eutectic point and melting enthalpy compared with the lamellar gel phase formed by any 1 kind of 2 nd nonionic surfactant represented by the formulas of formulas 2 to 5 alone.

According to a preferred embodiment of the above-mentioned viewpoint 1, the HLB-weighted average of the 1 st nonionic surfactant and the 2 nd nonionic surfactant is 6 to 10.

According to a preferred embodiment of the above-mentioned viewpoint 1, the oil phase contains an oily component having a molecular weight of 400 or less in an amount of 50 mass% or more relative to the mass of the oil phase.

According to a preferred mode of view 1 described above, the lamellar gel phase further comprises water.

According to the preferred embodiment from the viewpoint 1, the content of the higher fatty alcohol or the higher fatty acid is 1 mass% or less relative to the mass of the cleaning composition.

In the following description, PEG is shorthand for polyethylene glycol, POE is shorthand for polyoxyethylene, POP is shorthand for polyoxypropylene, and numbers in brackets following PEG, POE, or POP represent average addition mole numbers of PEG, POE group, or POP group in the compound.

In the present disclosure, "effective mass" refers to an amount that can be produced by the action and effect caused by the addition of the compound.

An oil-in-water type cleaning composition according to embodiment 1 of the present disclosure will be described. The oil-in-water type cleansing composition according to embodiment 1 comprises a lamellar gel phase, an oil phase, and an aqueous phase.

The lamellar gel phase comprises the 1 st nonionic surfactant and the 2 nd nonionic surfactant. The nonionic surfactant forms at least a portion of the lamellar gel phase. The lamellar gel phase may further comprise water.

In the present disclosure, the term "lamellar gel phase" means a gel-like substance formed of an association body composed of a lamellar bilayer membrane formed of a hydrophilic surfactant in the presence of water. However, a gel having an α -structure (seta コ, the phylogenetic chemical of cetyl alcohol) is generally called a lamellar gel, which is an association of a higher fatty alcohol and a hydrophilic surfactant in water.

The formation of the lamellar gel phase can be confirmed by analysis of the X-ray scattering pattern. For example, a plurality of peaks corresponding to long-face intervals are obtained in a small-angle region, and, in a wide-angle region (scattering vector q=1.5 nm ^-1 ) When a sharp single peak was obtained, it was determined that a lamellar gel phase was formed.

[ 1 st nonionic surfactant ]

The lamellar gel-containing compositions of the present disclosure comprise a 1 st nonionic surfactant that is believed to form at least a portion of the lamellar gel phase. The 1 st nonionic surfactant is preferably a nonionic surfactant having a hydrophobic portion on both sides of a hydrophilic portion. For example, the 1 st nonionic surfactant may be a nonionic surfactant having a structure shown in the following chemical formula 6.

In the formula shown in the formula 6, R ¹ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. R is R ² Is an alkylene group having 2 to 4 carbon atoms. R is R ³ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. k is an integer of 4 to 15.

And (6) chemical reaction:

examples of the 1 st nonionic surfactant include polyoxyethylene (4 moles) distearic acid (for example, emalex 200DIS, manufactured by Emalen corporation), polyoxyethylene (6 moles) distearic acid (for example, emalex 300DIS, manufactured by Emalen corporation), polyoxyethylene (8 moles) distearic acid (for example, manufactured by Emalen corporation, emalex 400 DIS), polyoxyethylene (12 moles) distearic acid (for example, manufactured by Emalen Emamin corporation, emalex 600DIS, manufactured by Emalex 600 DIS), steareth-4 stearate (for example, manufactured by Emalem corporation, emalex S-4), steareth-6 stearate (for example, manufactured by Emalem corporation, SWS-6), steareth-9 stearate (for example, manufactured by Emalex SWS-6), and the like, and SWEmalex 600 DIS-4. The polyoxyethylene chain and the alkyl group may be bonded in the form of an ester, an ether, or both.

The content of the 1 st nonionic surfactant is preferably 0.05 mass% or more based on the mass of the composition. The 1 st nonionic surfactant may be 0.1 mass% or more, 0.15 mass% or more, 0.2 mass% or more, 0.25 mass% or more, 0.3 mass% or more, 0.5 mass% or more, 1 mass% or more, 2 mass% or more, 5 mass% or more, or 8 mass% or more. If the content of the 1 st nonionic surfactant is less than 0.05 mass%, it is difficult to form a gel having stability against low molecular weight oily components. The content of the 1 st nonionic surfactant is preferably 10 mass% or less relative to the mass of the composition. The 1 st nonionic surfactant may be 8 mass% or less, 5 mass% or less, 3 mass% or less, 2.5 mass% or less, 2 mass% or less, 1.5 mass% or less, 1 mass% or less, or 0.5 mass% or less. If the content of the 1 st surfactant exceeds 10 mass%, the viscosity becomes extremely high, and the feel in use becomes poor.

[ 2 nd nonionic surfactant ]

The 2 nd nonionic surfactant is considered to constitute at least a part of the lamellar gel phase together with the 1 st nonionic surfactant. The 2 nd nonionic surfactant preferably has an HLB of 7 or more. The 2 nd nonionic surfactant preferably has an HLB of 15 or less.

The 2 nd nonionic surfactant may be at least 1 nonionic surfactant selected from the compounds represented by the following formulas 7 to 10. The 2 nd nonionic surfactant may be a combination of plural kinds.

In the formula shown in formula 7, R ⁴ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. R is R ⁵ Is of 2-4 carbon atomsAn alkylene group. l is an integer of 5 to 20.

Chemical 7:

examples of the 2 nd nonionic surfactant shown in formula 7 include polyoxyethylene (20 mol) behenyl ether (for example, nikkol BB-20, manufactured by sun chemical company), polyoxyethylene (10 mol) stearyl ether (for example, emalx 610, manufactured by the company of the city of the modified world of japan), polyoxyethylene (7 mol) cetyl ether (for example, emalx 107, manufactured by the company of the city of the modified world of the sea of japan), and the like.

In the formula shown in formula 8, R ⁶ 、R ¹⁰ And R is ¹⁴ Alkylene groups each having 2 to 4 carbon atoms. R is R ⁷ 、R ¹¹ And R is ¹⁵ Alkylene groups each having 8 to 12 carbon atoms. R is R ⁸ 、R ¹² And R is ¹⁶ Alkyl groups having 4 to 8 carbon atoms. R is R ⁹ 、R ¹³ And R is ¹⁷ A polymer of 12-hydroxystearic acid or a polymer of an alkylene polyol, respectively. The degree of polymerization of the polymer of 12-hydroxystearic acid or the polymer of alkylene polyol may be, for example, 1 to 3.m, n and o are natural numbers, respectively. The sum of m, n and o is 10 to 60.

And (3) chemical 8:

examples of the 2 nd nonionic surfactant shown in the formula 8 include polyoxyethylene (20 mol) hydrogenated castor oil fatty acid glyceride (for example, nikkol HCO-20, manufactured by sun chemical company), polyoxyethylene (60 mol) hydrogenated castor oil fatty acid glyceride (for example, nikkol HCO-60, manufactured by sun chemical company), and the like.

In the formula shown in chemical formula 9, R ¹⁸ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms. R is R ¹⁹ And R is ²⁰ Alkylene groups each having 2 to 4 carbon atoms. p and q are natural numbers, respectively. The sum of p and q is 5 to 20.

Chemical 9:

examples of the 2 nd nonionic surfactant shown in the formula 9 include polyoxyethylene (5 mol) glyceryl monostearate (for example, emalex GM-5 manufactured by Emalex Corp., japan), polyoxyethylene (10 mol) glyceryl monostearate (for example, emalex GM-10 manufactured by Emalex Corp., japan), and the like.

In the formula shown in chemical formula 10, R ²¹ 、R ²² 、R ²³ And R is ²⁵ Alkylene groups each having 2 to 4 carbon atoms. r, s, t and u are natural numbers, respectively. The sum of r, s, t and u is 5 to 30.R is R ²⁴ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms.

Chemical 10:

the 2 nd nonionic surfactant shown in the formula 10 may be, for example, polyoxyethylene monostearate (20 mol) sorbitan ester (for example, nikkol TS-10V, manufactured by solar chemical Co., ltd.).

The content of the 2 nd nonionic surfactant is preferably 0.05 mass% or more based on the mass of the composition. The 2 nd nonionic surfactant may be 0.1% by mass or more, 0.15% by mass or more, 0.2% by mass or more, 0.25% by mass or more, 0.3% by mass or more, 0.5% by mass or more, 1% by mass or more, 2% by mass or more, 5% by mass or more, or 8% by mass or more. If the content of the 2 nd nonionic surfactant is less than 0.05 mass%, lamellar gel is not easily formed. The content of the 2 nd nonionic surfactant is preferably 10 mass% or less relative to the mass of the composition. The 2 nd nonionic surfactant may be 8 mass% or less, 5 mass% or less, 3 mass% or less, 2.5 mass% or less, 2 mass% or less, 1.5 mass% or less, 1 mass% or less, or 0.5 mass% or less.

Regarding the mass ratio of the 1 st nonionic surfactant to the 2 nd nonionic surfactant, the 2 nd nonionic surfactant is preferably 0.2 parts by mass or more with respect to 1 part by mass of the 1 st nonionic surfactant. The 2 nd nonionic surfactant may be 0.5 parts by mass or more, 1 part by mass or more, 1.5 parts by mass or more, 2 parts by mass or more, 2.5 parts by mass or more, or 3 parts by mass or more with respect to 1 part by mass of the 1 st nonionic surfactant. Regarding the mass ratio of the 1 st nonionic surfactant to the 2 nd nonionic surfactant, the 2 nd nonionic surfactant is preferably 6 parts by mass or less with respect to 1 part by mass of the 1 st nonionic surfactant. The 2 nd nonionic surfactant may be 5 parts by mass or less, 4 parts by mass or less, 3 parts by mass or less, or 2 parts by mass or less with respect to 1 part by mass of the 1 st nonionic surfactant. If the 2 nd nonionic surfactant exceeds 6 parts by mass with respect to 1 part by mass of the 1 st nonionic surfactant, a lamellar gel having high stability against polar oil is not easily formed.

The total amount of the 1 st nonionic surfactant and the 2 nd nonionic surfactant is preferably 15 mass% or less relative to the mass of the composition. The total amount of the 1 st nonionic surfactant and the 2 nd nonionic surfactant may be 12 mass% or less, 10 mass% or less, 8 mass% or less, 6 mass% or less, 4 mass% or less, 2 mass% or less, or 1.5 mass% or less, relative to the mass of the composition. By making the total amount of surfactant low, irritation to the skin can be made low. For example, the cleaning compositions of the present disclosure may be applied to leave-on.

The HLB weighted average of the 1 st nonionic surfactant and the 2 nd nonionic surfactant may be 6 or more, 7 or more, 8 or more, or 9 or more. The HLB weighted average of the 1 st nonionic surfactant and the 2 nd nonionic surfactant may be 11 or less, 10 or less, 9 or less, or 8 or less. The HLB weighted average can be calculated from the mass ratio of the 1 st nonionic surfactant to the 2 nd nonionic surfactant. For example, the 1 st nonionic surfactant has an HLB of 6, the 2 nd nonionic surfactant has an HLB of 12, and the weighted average of HLB is 10 when the mass ratio of the 1 st nonionic surfactant to the 2 nd nonionic surfactant is 1:2.

[ Water ]

The oil-in-water cleaning compositions of the present disclosure may further comprise water. As the water, water usable in cosmetics, medical parts, and the like can be used, and for example, purified water, ion-exchanged water, tap water, and the like can be used.

The water content may be 10 mass% or more, 15 mass% or more, 20 mass% or more, 25 mass% or more, 30 mass% or more, 35 mass% or more, or 40 mass% or more, based on the mass of the composition. The water content may be 90 mass% or less, 80 mass% or less, 70 mass% or less, 60 mass% or less, 50 mass% or less, 40 mass% or less, 30 mass% or less, 25 mass% or less, or 20 mass% or less, relative to the mass of the composition. The water content here includes not only water in the aqueous phase but also water contained in the lamellar gel phase.

[ oil phase ]

The oil phase is emulsified by the lamellar gel phase. The oil phase is preferably liquid at 25 ℃ at atmospheric pressure. The emulsion stability can be improved by emulsifying the oil phase with the lamellar gel phase.

The average particle diameter of the oil phase is preferably 0.5 μm or more. The average particle diameter of the oil phase may be, for example, 1 μm or more. The average particle diameter of the oil phase is preferably 20 μm or less. The average particle diameter of the oil phase may be, for example, 15 μm or less, 10 μm or less, or 5 μm or less.

The oil phase preferably contains an oily component having a molecular weight of 400 or less. By containing an oily component having a molecular weight of 400 or less, the detergency to oily objects to be washed such as makeup can be improved. Examples of the oily component having a molecular weight of 400 or less include at least 1 selected from tripropylene glycol dipivalate, isodecane, isononyl isononanoate, cetyl ethylhexanoate, ethyl isostearate, isobutyl isostearate, isodecyl pivalate, octyl dodecyl pivalate, myristyl pivalate, and isostearyl pivalate.

The oil component having a molecular weight of 400 or less may be 50 mass% or more, 60 mass% or more, 70 mass% or more, 80 mass% or more, 90 mass% or more, or 100 mass% or more, for example, based on the mass of the oil phase.

The oil phase is not particularly limited, and may be appropriately mixed with, for example, liquid oils and fats, solid oils and fats, waxes, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, silicone oils, and the like.

Examples of the liquid oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg oil, sesame oil, peach seed oil, wheat germ oil, camellia oil, castor oil, linseed oil, safflower oil, cotton seed oil, perilla oil, soybean oil, peanut oil, tea seed oil, torreya oil, rice bran oil, white tung oil, japan tung oil, jojoba oil, germ oil, triglycine, and the like.

Examples of the solid fat include cocoa butter, coconut oil, horse fat, hardened coconut oil, palm oil, tallow, mutton fat, hardened tallow, palm kernel oil, lard, beef tallow, wood kernel oil, hardened oil, beef foot fat, wood wax, hardened castor oil, and the like.

Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, insect wax, spermaceti wax, montan wax, rice bran wax, lanolin, kapok wax, acetylated lanolin, liquid lanolin, sugarcane wax, isopropyl lanolin fatty acid, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol ester, POE hydrogenated lanolin alcohol ether, and the like.

Examples of the hydrocarbon oil include liquid paraffin, ceresin, squalane, pristane, paraffin, ceresin, squalene, petrolatum, and microcrystalline wax.

Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tall oil acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

As the higher alcohol, for example, a linear alcohol (for example, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, etc.) can be used; branched alcohols (e.g., monostearyl glycerol ether (batyl alcohol), 2-decyl tetradecyl alkynol, lanolin alcohol, cholesterol, phytosterols, hexyl dodecanol, isostearyl alcohol, octyl dodecanol, etc.), and the like.

As an oil of the synthetic ester, examples thereof include isopropyl myristate, cetyl caprylate, octyl dodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethylcaprylate, cetyl lactate, myristyl lactate, acetylated lanolin, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerol di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane tri-isostearate pentaerythritol tetra-2-ethylhexanoate, glycerol tri-2-ethylhexanoate, glycerol trioctanoate, glycerol triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glycerol trimyristate, glycerol tri-2-heptylundecanoate, methyl castor oil fatty acid, oleyl oleate, acetylglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, triethyl citrate, and the like.

Examples of the silicone oil include silicone compounds such as dimethylpolysiloxane, methyl hydrogen-containing polysiloxane, methylphenyl polysiloxane, stearoxymethyl polysiloxane, polyether-modified organopolysiloxane, fluoroalkyl/polyoxyalkylene co-modified organopolysiloxane, alkyl-modified organopolysiloxane, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicic acid, silicone RTV rubber, and cyclopentasiloxane.

The content of the oil phase (oily component) is preferably 3% by mass or more relative to the mass of the oil-in-water type cleansing composition. The oil phase may be, for example, 5 mass% or more, 10 mass% or more, 15 mass% or more, 20 mass% or more, 25 mass% or more, 30 mass% or more, 35 mass% or more, 40 mass% or more, 45 mass% or more, 50 mass% or more, 55 mass% or more, or 60 mass% or more. If the oil phase is less than 5 mass%, the detergency is lowered. The content of the oil phase is preferably 80 mass% or less relative to the mass of the oil-in-water type cleansing composition. The oil phase may be, for example, 70 mass% or less, 60 mass% or less, 55 mass% or less, 50 mass% or less, 45 mass% or less, or 40 mass% or less. If the oil phase exceeds 80 mass%, the emulsion stability is lowered.

[ higher fatty alcohol/higher fatty acid ]

In the compositions of the present disclosure, the lamellar gel phase may be built up solely from nonionic surfactants. In the composition of the present disclosure, the content of the higher fatty alcohol or higher fatty acid having 16 or more carbon atoms constituting the lamellar gel phase is preferably 1 mass% or less relative to the mass of the oil-in-water type cleansing composition. The oil-in-water type cleansing composition of the present disclosure may contain substantially no higher fatty alcohol or higher fatty acid having 16 or more carbon atoms. If the higher fatty alcohol or higher fatty acid constituting the lamellar gel phase is contained in an amount exceeding 1 mass%, the user feels sticky when applying the composition to the skin.

The content of the 1 st nonionic surfactant, the 2 nd nonionic surfactant, and water in the oil-in-water type cleansing composition can be calculated from the content of the lamellar gel phase.

A method of manufacturing the lamellar gel phase of the present disclosure will be described. The method of making the lamellar gel phase may comprise, for example: the step of heating and melting the nonionic surfactant and the step of adding water to the melted nonionic surfactant and stirring the mixture. The nonionic surfactant may be melted at, for example, 70℃to 80 ℃. The added water is preferably heated to the same extent as the nonionic surfactant (e.g., 70 ℃ C. To 80 ℃ C.; e.g.,.+ -. 15 ℃ C.). The lamellar gel phase can be obtained by cooling after the addition of water. When the nonionic surfactant is a mixture, for example, the mixture of the nonionic surfactant shown in the formula 6 and the nonionic surfactants shown in the formulas 7 to 10 may be melted by heating.

A method of manufacturing the oil-in-water type cleaning composition of the present disclosure will be described. As the 1 st aspect, a method for producing the oil-in-water type cleaning composition may comprise, for example: a step of emulsifying the oily component with the lamellar gel phase, and a step of adding the aqueous component after the emulsification. The step of emulsifying the oily component may include, for example: a step of preparing a solution in which the 1 st nonionic surfactant and the 2 nd nonionic surfactant are dissolved in a polyhydric alcohol (for example, dipropylene glycol or 1, 3-butanediol), and a step of emulsifying while adding an oily component to the solution. For example, the oil-in-water type cleaning composition of the present disclosure may be manufactured using a non-aqueous emulsification process (D-phase emulsification process). By using a nonaqueous emulsification method, emulsified particles can be made finer. In addition, the lamellar gel phase may be adsorbed to the oil-water interface.

The lamellar gel phase of the present disclosure may be constructed from nonionic surfactants without the use of higher fatty alcohols or higher fatty acids. Thus, when the lamellar gel phase is applied to the skin, the user does not feel sticky as the lamellar gel phase using higher fatty alcohol or higher fatty acid, and a fresh feeling of use can be obtained. In particular, it is considered that a large amount of water component is not introduced between the layered surfaces, and thus the skin during application can be quickly adapted, and the moisturizing effect of the skin after application is excellent.

The oil-in-water type cleaning composition of the present disclosure may have a lamellar gel phase constituted as a single-phase self-assembly body. In the oil-in-water type cleansing composition of the present disclosure, since the cleansing composition is formed only of a polyoxyethylene nonionic surfactant having similar properties, the formation of a mixture of a lamellar gel phase and a crystalline 2 phase can be suppressed. Thus, in the oil-in-water type cleaning composition of the present disclosure, problems such as crystallization and viscosity increase with time stability can be suppressed.

The lamellar gel phase of the present disclosure formed from the nonionic surfactant shown in fig. 6 and the nonionic surfactants shown in fig. 7 to 10 has a high eutectic point and melting enthalpy compared to the lamellar gel phase formed from the nonionic surfactant shown in fig. 7 to 10 alone. By having a high eutectic point and melting enthalpy, stability to high temperatures can be made high.

The oil-in-water type cleansing composition of the present disclosure has higher stability and faster adaptation to the skin than the oil-in-water type cleansing composition emulsified with a lamellar gel phase using a higher fatty alcohol or higher fatty acid.

The lamellar gel of the present disclosure has low solubility in oily components having a molecular weight of 400 or less and oily components having high polarity. Thus, even if a low molecular weight oil and a high polarity oil, in which the lamellar gel phase using a higher fatty alcohol or a higher fatty acid cannot be emulsified, are emulsified, high emulsion stability can be maintained. Thus, a large amount of low-molecular-weight oily components having a high cleansing effect can be mixed, and the oil-in-water cleansing composition of the present disclosure can provide a high cleansing property for oily cleansing components such as makeup.

The oil-in-water type cleansing composition of the present disclosure may contain other ingredients such as water-soluble alcohol, powder, anionic surfactant, cationic surfactant, amphoteric surfactant, hydrophilic nonionic surfactant, lipophilic nonionic surfactant, water-soluble polymer, thickener, humectant, coating agent, oil-soluble ultraviolet absorber, water-soluble ultraviolet absorber, metal ion blocking agent, amino acid, organic amine, polymer emulsion, pH adjuster, skin nutritional agent, vitamin, antioxidant aid, perfume, etc. as appropriate as required within a range not impairing the effects of the present disclosure.

Examples of the water-soluble alcohol include at least 1 selected from the group consisting of lower alcohols, polyols, polyol polymers, 2-membered alcohol alkyl ethers, 2-membered alcohol ether esters, glycerol monoalkyl ethers, sugar alcohols, monosaccharides, oligosaccharides, polysaccharides, and derivatives thereof.

Examples of the lower alcohol include ethanol, propanol, isopropanol, isobutanol, and tert-butanol.

As the 2-diol, for example, ethylene glycol, propylene glycol, 1, 3-propanediol, 1, 2-butanediol, 1, 3-butanediol, 1, 4-butanediol, 2, 3-butanediol, 1, 5-pentanediol, 2-butene-1, 4-diol, hexanediol, octanediol, etc. can be used.

As the 3-membered alcohol, for example, glycerin, trimethylolpropane, or the like can be used.

Examples of the polyhydric alcohol include 2-polyhydric alcohols (e.g., ethylene glycol, propylene glycol, 1, 3-propylene glycol, 1, 2-butanediol, 1, 3-butanediol, 1, 4-butanediol, 2, 3-butanediol, 1, 5-pentanediol, 2-butene-1, 4-diol, hexanediol, octanediol, etc.); 3-alcohols (e.g., glycerol, trimethylolpropane, etc.); 4-polyol (e.g., pentaerythritol such as 1,2, 6-hexanetriol, etc.); 5-membered alcohol (e.g., xylitol, etc.); 6-membered alcohols (e.g., sorbitol, mannitol, etc.); polyhydric alcohol polymers (e.g., diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerol, polyethylene glycol, triglycerol, tetraglycerol, polyglycerin, and the like); alcohol alkyl ethers of 2-membered alcohol (e.g., ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono-2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, etc.); 2-membered alcohol alkyl ethers (e.g., diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol methyl ethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol butyl ether, etc.); 2-alcohol ether esters (e.g., ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol di-adipate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc.); glycerol monoalkyl ethers (e.g., squalol, etc.); sugar alcohols (e.g., sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, amylolytic sugars, maltose, xylitol, amylolytic sugar reducing alcohols, etc.); glycolide; tetrahydrofurfuryl alcohol; POE-tetrahydrofurfuryl alcohol; POP-butyl ether; POP/POE-butyl ether; a glyceryl trimer ether; POP-glycerol ether; POP-glycerol ether phosphoric acid; POP/POE-pentaerythritol ether, polyglycerin, and the like.

Examples of monosaccharides include, for example, those selected from the group consisting of tricarbones (e.g., D-glyceraldehyde, dihydroxyacetone, etc.), tetracarbones (e.g., D-erythrose, D-erythrulose, D-threose, erythritol, etc.), pentacarboses (e.g., L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc.), hexacarboses (e.g., D-glucose, D-talose, D-psicose, D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.), heptacarboses (e.g., heptanal, heptanone, etc.), octacarboses (e.g., octone, etc.), deoxysaccharides (e.g., 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannuronate, etc.), aminosugars (e.g., D-glucosamine, D-sialyl, D-galacturonic acid, glucuronic acid, D-guluronic acid, L-guluronic acid, etc.), and the like.

Examples of the oligosaccharides include at least 1 selected from sucrose, gentitriose, umbrella-shaped sugar, lactose, plantain triose, isostearyl saccharide, α -trehalose, raffinose, okurose, concha haliotidis, stachyose, and calycosin.

Examples of the polysaccharide include at least 1 selected from cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, acacia, heparan sulfate, hyaluronic acid, tragacanth, keratan sulfate, chondroitin, xanthan gum, mucin sulfate, guar gum, dextran, horny sulfate, locust bean gum, succinoglucan, and caroning acid.

Examples of the other polyols include at least 1 selected from polyoxyethylene methyl glucoside (E-10), polyoxypropylene methyl glucoside (P-10), and the like.

The powder is not particularly limited as long as it can be generally used for cosmetic applications and the like. As the powder, for example, inorganic powder (for example, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, muscovite, biotite, lepidolite, calcined mica, calcined talc, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, glass, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soap (for example, zinc myristate, calcium palmitate, aluminum stearate), boron nitride, or the like) can be used; organic powders (for example, polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, silicone resin powder, silk powder, wool powder, urethane powder, etc.); inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); inorganic red pigments (for example, iron oxide (red iron oxide), iron titanate, etc.); inorganic brown pigments (such as γ -iron oxide), inorganic yellow pigments (such as iron oxide yellow and loess), inorganic black pigments (such as iron oxide black, carbon black and titanium suboxide), and inorganic violet pigments (such as manganese violet and cobalt violet); inorganic green pigments (for example, chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine blue, dark blue, etc.); pearlescent pigments (e.g., titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, colored titanium oxide-coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium, or aluminum lakes (e.g., organic pigments such as red 201, red 202, red 204, red 205, red 220, red 226, red 228, red 405, orange 203, orange 204, yellow 205, yellow 401, and blue 404, red 3, red 104, red 106, red 227, red 230, red 401, red 505, orange 205, yellow 4, yellow 5, yellow 202, yellow 203, green 3, and blue 1, etc.); natural pigments (e.g., chlorophyll, beta-carotene, etc.); wax powder (e.g., carnauba wax powder, etc.); starch powder (e.g., corn starch powder, rice starch powder, etc.), and the like.

As the anionic surfactant, for example, fatty acid soaps (e.g., sodium laurate, sodium palmitate, etc.) can be used; higher alkyl sulfate salts (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfate salts (e.g., POE-triethanolamine lauryl sulfate, POE-sodium lauryl sulfate, etc.); n-acyl sarcosines (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-stearoyl-N-methyltaurine, sodium N-myristoyl-N-methyltaurine, sodium cocoyl fatty acid methyltaurine, sodium lauryl methyltaurine, etc.); phosphate esters (sodium POE-oleyl ether phosphate, POE-stearyl ether phosphate, etc.); sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauryl monoethanolamide polyoxyethylene sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.); alkylbenzene sulfonates (e.g., sodium linear dodecylbenzene sulfonate, triethanolamine linear dodecylbenzene sulfonate, linear dodecylbenzene sulfonic acid, etc.); higher fatty acid ester sulfate (e.g., hardened coconut oil fatty acid sodium glycerinum sulfate, etc.); n-acyl glutamates (e.g., monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamate, etc.); sulfated oils (e.g., turkish red oil, etc.); POE-alkyl ether carboxylic acid; POE-alkyl allyl ether carboxylate; alpha-olefin sulfonates; higher fatty acid ester sulfonates; a secondary alcohol sulfate salt; higher fatty acid alkanolamide sulfate salts; sodium lauroyl monoethanolamide succinate; n-palmitoyl aspartic acid bis (triethanolamine); sodium caseinate, and the like.

Examples of the cationic surfactant include alkyl trimethylammonium salts (e.g., stearyl trimethylammonium chloride, lauryl trimethylammonium chloride, etc.); alkyl pyridinesSalts (e.g., cetylpyridinium chloride +)>Etc.); dialkyl dimethyl ammonium salts (e.g., distearyl dimethyl ammonium chloride); chlorinated poly (N, N' -dimethyl-3, 5-methylenepiperidine +.>) The method comprises the steps of carrying out a first treatment on the surface of the Alkyl quaternary ammonium salts; alkyl dimethylbenzyl ammonium salts; alkylisoquinoline->A salt; dialkyl morpholines->A salt; POE-alkylamine; an alkylamine salt; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride, and the like.

Examples of the amphoteric surfactant include imidazoline-based amphoteric surfactants (e.g., sodium 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline, sodium 2-cocoyl-2-imidazoline)Hydroxide-1-carboxyethoxy 2 sodium salt, etc.); betaine-based surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethyl imidazoline->Betaine, lauryl dimethyl amino acetic acid betaine, alkyl betaine, amide betaine, sulfobetaine, etc.), and the like.

Examples of the hydrophilic nonionic surfactant include POE-sorbitan fatty acid esters (for example, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE-sorbitol fatty acid esters (e.g., POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.); POE-glycerol fatty acid esters (e.g., POE-glycerol monostearate, POE-glycerol monoisostearate, POE-glycerol triisostearate, etc.), POE-monooleate, etc.; POE-fatty acid esters (e.g., POE-distearate, POE-monooleate, ethylene distearate, etc.); POE-alkyl ethers (e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); a cartridge type (for example, cartridge (registered trademark)) and the like; POE/POP-alkyl ethers (e.g., POE/POP-cetyl ether, POE/POP-2-decyl tetradecyl ether, POE/POP-monobutyl ether, POE/POP-hydrogenated lanolin, POE/POP-glycerol ether, etc.); four POE/four POP-ethylenediamine condensate (e.g., toque, etc.); POE-castor oil hardened castor oil derivatives (e.g., POE-castor oil, POE-hardened castor oil monoisostearate, POE-hardened castor oil triisostearate, POE-hardened castor oil monopyroglutamic acid monoisostearate diester, POE-hardened castor oil maleic acid, etc.); POE-beeswax/lanolin derivatives (e.g., POE-sorbitol beeswax, etc.); alkanolamides (e.g., coconut fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid ester; POE-alkylamine; POE-fatty acid amides; sucrose fatty acid ester; alkyl ethoxy dimethyl amine oxide; tri-oil based phosphoric acid, and the like.

Examples of the lipophilic nonionic surfactant include sorbitan fatty acid esters (for example, sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, penta-2-ethylhexyl diglycerol sorbitan ester, tetra-2-ethylhexyl diglycerol sorbitan ester, and the like); polyglycerol fatty acids (e.g., glycerol monocottonseed oil fatty acid, glycerol monoerucic acid, glycerol sesquioleate, glycerol monostearate, glycerol α, α' -oleic pyroglutamate, glycerol monostearate malic acid, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); hardened castor oil derivatives; glycerol alkyl ethers, and the like.

Examples of the natural water-soluble polymer include plant polymers (for example, acacia, tragacanth, galactan, guar gum, carob bean gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), seaweed gum (brown seaweed extract), starch (rice, corn, potato, wheat), and glycyrrhizic acid); microorganism-based polymers (e.g., xanthan gum, dextran, succinoglycan, pullulan, etc.); animal-based polymers (e.g., collagen, casein, albumin, gelatin, etc.), and the like.

Examples of the semisynthetic water-soluble polymer include starch polymers (e.g., carboxymethyl starch, methyl hydroxypropyl starch, etc.); cellulose polymers (methylcellulose, ethylcellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); alginic acid polymers (e.g., sodium alginate, propylene glycol alginate, etc.), and the like.

Examples of the synthetic water-soluble polymer include vinyl polymers (for example, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, and carboxyvinyl polymer); polyoxyethylene-based polymers (for example, polyoxyethylene polyoxypropylene copolymers of polyethylene glycol 20,000, 40,000, 60,000, etc.); acrylic polymers (e.g., sodium polyacrylate, ethyl polyacrylate, polyacrylamide, etc.); a polyethyleneimine; cationic polymers, and the like.

Examples of the thickener include acacia, carrageenan, karaya, tragacanth, carob, quince seed (quince), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, carboxymethyl cellulose (CMC), hydroxyethyl cellulose, hydroxypropyl cellulose, polyvinyl alcohol (PVA), polyvinyl methyl ether (PVM), PVP (polyvinylpyrrolidone), sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, locust bean gum, dialkyldimethyl ammonium sulfate cellulose, xanthan gum, aluminum magnesium silicate, bentonite, hectorite, aluminum magnesium silicate (peril), laponite (laponite), silicic anhydride, taurine-based synthetic polymer, acrylic ester-based synthetic polymer, and the like.

Examples of the humectant include polyethylene glycol, propylene glycol, glycerin, 1, 3-butanediol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucin sulfate, caroning acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile acid salt, dl-pyrrolidone carboxylate, alkylene oxide derivative, short chain soluble collagen, diglycerol (EO) PO adduct, filature flower extract, tragacanth extract, sweet clover extract, and the like.

Examples of the coating agent include anionic coating agents (for example, (meth) acrylic acid/(meth) acrylate copolymers, methyl vinyl ether/maleic anhydride polymers, and the like), cationic coating agents (for example, cationized cellulose, dimethyldiallylammonium chloride polymers, dimethyldiallylammonium chloride/acrylamide copolymers, and the like), and nonionic coating agents (for example, polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl acetate, polyacrylate copolymers, (meth) acrylamides, high molecular silicones, silicone resins, trimethylsiloxysilicic acid, and the like).

Examples of the oil-soluble ultraviolet absorber include benzoic acid-based ultraviolet absorbers (e.g., p-aminobenzoic acid (for example) Hereinafter abbreviated as PABA), PABA monoglyceride, N-dipropoxy PABA ethyl ester, N-diethoxy PABA ethyl ester, N-dimethyl PABA butyl ester, N-dimethyl PABA ethyl ester, diethylamino hydroxybenzohexyl benzoate, etc.; anthranilic acid-based ultraviolet absorbers (e.g., highbase-N-acetylanthranilate, etc.); salicylic acid ultraviolet absorber (e.g., ethylhexyl salicylate, amyl salicylate, menthyl salicylate, homosalicylic acid +.>Esters, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropyl phenyl salicylate, homosalate, and the like); cinnamic acid-based ultraviolet absorbers (for example, octyl methoxycinnamate, ethyl-4-isopropyl cinnamate, methyl-2, 5-diisopropyl cinnamate, ethyl-2, 4-diisopropyl cinnamate, methyl-2, 4-diisopropyl cinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isopentyl-p-methoxycinnamate, octyl-p-methoxycinnamate (2-ethylhexyl-p-methoxycinnamate, ethylhexyl methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl- α -cyano- β -phenyl cinnamate, 2-ethylhexyl- α -cyano- β -phenyl cinnamate, glyceryl mono-2-ethylhexanoyl-di-p-methoxycinnamate, and the like); 3- (4' -methylbenzylidene) -d, l-camphor, 3-benzylidene-d, l-camphor; 2-phenyl-5-methylbenzo- >An azole; 2,2' -hydroxy-5-methylphenyl benzotriazole; 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole; 2- (2 ' -hydroxy-5 ' -methylphenyl-benzotriazole, dibenzyl-azine, dianisidine, 4-methoxy-4 ' -tert-butyldibenzoylmethane, 5- (3, 3-dimethyl-2-norbornylene) -3-pentan-2-one, dimorpholinopyridazinone, 2-ethylhexyl-2-cyano-3, 3-di-n-Phenyl acrylate (octocrylene); 2, 4-bis- { [4- (2-ethylhexyl oxy) -2-hydroxy group]-phenyl } -6- (4-methoxyphenyl) - (1, 3, 5) -triazine, benzophenone-based ultraviolet absorbers (e.g., 2, 4-dihydroxybenzophenone, 2' -dihydroxy-4-methoxybenzophenone, 2' -dihydroxy-4, 4' -dimethoxybenzophenone, 2', 4' -tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4 ' -methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4 ' -phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, and the like) and the like.

Examples of the water-soluble ultraviolet absorber include benzophenone-based ultraviolet absorbers (for example, 2-hydroxy-4-methoxybenzophenone-5-sulfonate), benzylidene camphor-based ultraviolet absorbers (benzylidene camphor sulfonic acid, terephthalidene dicyano camphor sulfonic acid, and the like), phenylbenzimidazole-based ultraviolet absorbers (phenylbenzimidazole sulfonic acid, and the like), and the like.

Examples of the metal ion blocking agent include 1-hydroxyethane-1, 1-diphosphonic acid, 1-hydroxyethane-1, 1-diphosphonic acid tetrasodium salt, disodium ethylenediamine tetraacetate, trisodium ethylenediamine tetraacetate, tetrasodium ethylenediamine tetraacetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, ethylenediamine tetraacetic acid, ethylenediamine hydroxyethyl triacetic acid 3 sodium, and the like.

Examples of the amino acid include neutral amino acids (e.g., threonine, cysteine, etc.); basic amino acids (e.g., hydroxylysine, etc.), and the like. Examples of the amino acid derivative include sodium acyl sarcosinate (sodium lauroyl sarcosinate), acyl glutamate, sodium acyl β -alanate, glutathione, and pyrrolidone carboxylic acid.

Examples of the organic amine include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1, 3-propanediol, and 2-amino-2-methyl-1-propanol.

Examples of the polymer emulsion include an acrylic resin emulsion, a polyethyl acrylate emulsion, an acrylic resin liquid, a polyacrylic alkyl ester emulsion, a polyvinyl acetate resin emulsion, and a natural rubber latex.

Examples of the pH adjuster include buffers such as sodium lactate, sodium citrate, and sodium succinate.

Examples of vitamins include vitamins A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, biotin, and the like.

Examples of the antioxidant include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, and gallates.

Examples of the antioxidant auxiliary include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediamine tetraacetic acid.

Examples of the other components that can be blended include preservatives (ethyl parahydroxybenzoate, butyl parahydroxybenzoate, chlorphenesin, phenoxyethanol, etc.); anti-inflammatory agents (e.g., glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (e.g., placenta extract, saxifrage extract, arbutin, etc.); various extracts (e.g., phellodendron, coptis chinensis, lithospermum, paeonia lactiflora, swertia japonica, birch, sage, loquat, carrot, aloe, mallow, iris, grape, coix seed, luffa, lily, crocus sativa, ligusticum wallichii, ginger, hypericum perforatum, formononeti, garlic, capsicum annuum, dried orange peel, angelica sinensis, seaweed, etc.), activators (e.g., royal jelly, biotin, cholesterol derivatives, etc.); blood circulation promoting agents (e.g., vanillylamide nonanoate, benzyl nicotinate, beta-butoxyethyl nicotinate, capsaicin, zingibrone, cantharides tincture, ichthyol, tannic acid, alpha-borneol, tocopheryl nicotinate, inositol hexanicotinate, cyclic mandelate, cinnarizine, tolazoline, acetylcholine, verapamil, stephanine, gamma-oryzanol, etc.); anti-seborrheic agents (e.g., sulfur, dimethylthianthrene, etc.); anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.), and the like.

Further, the composition of the present disclosure may suitably contain various crude drug extracts such as caffeine, tannin, verapamil, tranexamic acid and derivatives thereof, licorice, papaya, pyrola japonica, and the like, agents such as tocopheryl acetate, glycyrrhetinic acid, glycyrrhizic acid and derivatives thereof or salts thereof, whitening agents such as vitamin C, magnesium ascorbyl phosphate, ascorbyl glucoside, arbutin, kojic acid and the like, amino acids such as arginine, lysine and the like, and derivatives thereof.

Examples

The oil-in-water type cleaning composition of the present disclosure will be described below by way of example. However, the oil-in-water type cleaning composition of the present disclosure is not limited to the following examples. The content of each component shown in each table is in mass%.

Test examples 1 to 4

Compositions shown in tables 1 to 4 were prepared, and small-angle wide-angle X-ray scattering measurement and differential scanning calorimetric measurement (DSC measurement) were performed on each composition. The number of moles in brackets shown in tables 1 to 4 represents the average number of moles of polyoxyethylene added.

As the 1 st nonionic surfactant which is a 2-chain nonionic surfactant, polyoxyethylene (6 moles) distearic acid is used. As the 2 nd nonionic surfactant of HLB7 to 15, polyoxyethylene (7 moles) cetyl ether (HLB 10), a 3:2 mixture of polyoxyethylene (20 moles) hydrogenated castor oil fatty acid glyceride (HLB 10.5) and polyoxyethylene (10 moles) hydrogenated castor oil fatty acid glyceride (HLB 7), polyoxyethylene monostearate (10 moles) glyceride (HLB 11), and polyoxyethylene monostearate (20 moles) sorbitan ester (HLB 14.9) were used.

The composition of the present disclosure is produced by melting a nonionic surfactant shown in the following table at 70 to 80 ℃ to form a phase, adding ion-exchanged water at 70 to 80 ℃ thereto, stirring, and cooling.

The lamellar gel was measured at 25℃by small-angle wide-angle X-ray scattering. The differential scanning calorimeter was used to measure the change in heat from 30℃to 70℃at 2℃per minute (DSC measurement). The case where the 1 st nonionic surfactant was added was compared with the case where the nonionic surfactant was not added.

Fig. 1 to 4 show small-angle wide-angle X-ray scattering diagrams and DSC diagrams in test examples 1 to 4. In each of the figures, the upper layer (indicated by "addition") is a figure of the composition to which the 1 st nonionic surfactant was added, and the lower layer (indicated by "no addition") is a figure of the composition to which the 1 st nonionic surfactant was not added.

In test example 1 (fig. 1), the 1:2 equally spaced arrows on the small angle side of the X-ray diagram correspond to the long-surface spacing of the lamellar gel, and it was found that the samples of polyoxyethylene (6 moles) distearate, both added and not added, had a lamellar structure. However, the scattering vector q=1.5 nm, represented by the large dashed arrow ^-1 The peaks in the vicinity represent the hexagonal lattice of the α -type structure, but the intensity is strong, and therefore the regularity of the subfragment face is high. On the other hand, in the case of DSC, if polyoxyethylene (6 moles) distearate is added to the endothermic peak at 40.2℃in the absence of addition, the peak at this time is shifted to 45.6℃and the original peak is disappeared, so that it is known as the eutectic point of the mixture.

In test example 2 (fig. 2), since the sample without addition has no melting point, there is no scattering vector q=1.5 nm ^-1 The nearby peaks are therefore known as lamellar liquid crystals which do not have a hexagonal structure. However, by adding polyoxyethylene (6 moles) distearic acid, a peak of hexagonal crystal appears, and a eutectic point is generated at 38.0 ℃.

In test example 3 (fig. 3) and test example 4 (fig. 4), the addition of polyoxyethylene (6 moles) distearic acid increases the regularity of the sub-lattice surface, and the eutectic point appears, which is about 5 ℃ higher than the original melting point.

From this, it can be seen that in the composition of the present disclosure, a single-phase self-assembly is formed from the 1 st nonionic surfactant, the 2 nd nonionic surfactant, and water. For example, in the case of a mixture of crystals and 2 phases of lamellar gel, the blocks of crystals precipitate in the composition. The compositions of the present disclosure are shown to be homogeneous compositions. Furthermore, it is seen that the compositions of the present disclosure have high temperature stability.

In fig. 5, the melting enthalpy (addition) of the composition containing the mixture of the 1 st nonionic surfactant and the 2 nd nonionic surfactant in test examples 1 to 4 is shown, compared with the melting enthalpy (no addition) of the composition containing the 2 nd nonionic surfactant alone, namely the lamellar gel or lamellar liquid crystal.

As shown in fig. 5, the melting enthalpy of the water-dispersible self-assembly of each nonionic surfactant was significantly increased by the addition of polyoxyethylene (6 moles) distearate. From the above, it was found that the addition of polyoxyethylene (6 moles) distearate increases the regularity of the self-assembly of the nonionic surfactant, and the lamellar gel becomes stronger.

TABLE 1

TABLE 2

TABLE 3

TABLE 4 Table 4

Test example 5

The solubility of the lamellar gel phase of the present disclosure in polar oily components was tested. Compositions comprising lamellar gel phases were formulated using the ingredients shown in table 5. Tripropylene glycol dipivalate (obtained from zero コ s TPG, ex zero corporation) was added to the composition in the same mass as the high-polarity oily component, and the composition was stored in a constant temperature bath at 50 ℃ for 1 month to confirm the solubility of each lamellar gel in tripropylene glycol dipivalate. The solubility was compared in terms of volume fraction of the lamellar gel phase. The volume fraction is obtained by multiplying the ratio (b/a) of the height (b) from the bottom surface to the upper surface of the lamellar gel phase (cloudy portion) to the height (a) from the bottom surface to the liquid surface by 100. In FIG. 6, photographs of the compositions of test examples 5-1 to 5-4 are shown. The compositions of test example 5-1 and test example 5-2 were the same as those of test example 3-1 and test example 3-2.

The lamellar gel of the composition of test example 5-2, to which no 1 st nonionic surfactant was added, was dissolved in an oily component. In test examples 5-3 and 5-4 in which the lamellar gel phase was formed by adding the higher alcohol, there was a lamellar gel phase remaining without being dissolved in the polar oil, but more of the lamellar gel phase of the present disclosure was dissolved than that shown in test example 5-1. From this, it is understood that the lamellar gel of the present disclosure has low solubility to the high-polarity oily component.

TABLE 5

Test example 6

Emulsion stability of the oil-in-water type cleaning compositions of the present disclosure was tested. Tripropylene glycol dipivalate and isodecane are used as low molecular weight oil components having high makeup removability in the oil phase. The oil-in-water type cleaning composition thus prepared was stored at 50℃for 1 month, and the presence or absence of coalescence of the emulsified oil droplets was confirmed. As a comparative control, the same test was performed on an oil-in-water composition in which the lamellar gel phase of the present disclosure was not emulsified, but was emulsified with the lamellar gel phase made of the 2 nd nonionic surfactant alone or with higher alcohol. The compositions and results are shown in table 6.

In test examples 6-5 to 6-7 in which the 1 st nonionic surfactant was not used, coalescence of the emulsified oil droplets was confirmed. On the other hand, in test examples 6-1 to 6-4 using the lamellar gel phase of the present disclosure, coalescence of the emulsified oil droplets was not confirmed. According to the results of test examples 1 to 5, the lamellar gel phase of the present disclosure is substantially insoluble in tripropylene glycol dipivalate and isododecane due to its more firm structure. Therefore, it is considered that coalescence of the emulsified particles does not occur because the lamellar gel phase is not introduced into the oil droplets. In contrast, in test examples 6-5 to 6-7, it is considered that coalescence of oil droplets occurs because the lamellar gel phase dissolves in the oil droplets.

In test example 6-1, 40 mass% of a low molecular weight oily component was also blended. Therefore, the oil-in-water type cleaning composition of test example 6-1 was considered to have high cleaning performance.

Table 6:

test example 7

The feel in use of an oil-in-water (O/W) type cleaning composition using the lamellar gel phase of the present disclosure was tested. Test example 7-1 is a cleaning composition using the lamellar gel phase of the present disclosure. As a comparative control, the following were used: oil-in-water (O/W) type cleaning compositions using behenic acid soap, stearic acid soap, polyoxyethylene (5 moles) glyceryl monostearate, and behenol (test example 7-2), and oil-in-water (O/W) type cleaning compositions using polyoxyethylene (60 moles) type hardened castor oil (test example 7-3). The compositions of the oil-in-water type cleaning compositions of test examples 7-1 to 7-3 are shown in Table 7.

The 6 panelists each applied an appropriate amount of the composition of test example 7-1 to one half of the face, and applied the composition of test example 7-2 to the other half, and evaluated the feel of use of test example 7-1 relative to test example 7-2. The evaluation items shown in fig. 7 (slip feeling, spreadability, tackiness during washing, water-wet feeling, smooth feeling, tight feeling, tackiness after washing, refreshing feeling, wet feeling after washing for 5 minutes) were evaluated at 7 stages of-3 to +3 using the touch feeling. Evaluation score 0 was set to the same feel as test example 7-2. The composition of test example 7-3 was also evaluated for the feel in use in comparison with test example 7-1 in the same manner. The evaluation results of test example 7-1 versus test example 7-2 are shown in FIG. 7. The evaluation results of test example 7-1 versus test example 7-3 are shown in FIG. 8.

As is clear from the results shown in fig. 7, the cleansing material using the lamellar gel phase of the present disclosure had a good spreadability, smoothness and freshness, but had a higher soft feel to the skin after cleansing, as compared with the cleansing material using the lamellar gel phase of test example 7-2. The cleaning composition of the present disclosure was found to have an excellent feel in use as compared with the cleaning composition of test example 7-2.

As is clear from the results shown in fig. 8, the cleansing bar using the lamellar gel phase of the present disclosure had a higher soft feel to the skin after cleansing, although the cleansing bar had good spreadability, smoothness and freshness, than the cleansing bar emulsified with the polyoxyethylene (60 moles) hardened castor oil of test example 7-3. The cleaning composition of the present disclosure was found to have an excellent feel in use as compared with the cleaning composition of test example 7-3.

TABLE 7

Test example 8

It was confirmed whether or not lamellar gels could be produced by changing the HLB weighted average of the nonionic surfactant, and further whether or not oil-in-water type compositions could be produced using the lamellar gels. The composition of the oil-in-water composition is shown in Table 8.

The formation of a lamellar gel phase was confirmed in any of the compositions of test examples 8-1 to 8-7. In addition, emulsification of the oil phase can be performed stably. From this, it is clear that the HLB weighted average can be in a wide range of 6 to 10.

TABLE 8

The following is a prescription example of the composition of the present disclosure. Examples of application of the composition of the present disclosure are not limited by the following prescription examples. The content of each component shown in the table is in mass%.

Prescription example 1 Makeup removal cotton (Table 9)

The makeup removing emulsion shown in Table 9 was prepared by emulsifying by a conventional method. The obtained makeup removing emulsion is impregnated into absorbent cotton to prepare the makeup removing cotton. With the makeup removing cotton, the makeup mascara is removed, and as a result, the mascara can be well discharged. In addition, the user does not feel greasy after washing, and can obtain a refreshing feel. Furthermore, the emulsion stability of the makeup removing emulsion is good.

TABLE 9

Prescription example 2 cleansing gel (Table 10)

The cleansing gel shown in table 10 was prepared by emulsifying by a conventional method. With the cleansing gel, the makeup mascara is removed, and as a result, the mascara can be well discharged. In addition, the user does not feel greasy after washing, and can obtain a refreshing feel. Further, the stability of the makeup removing emulsion is good.

Table 10

The oil-in-water type cleaning composition and the method for producing the same according to the present invention are described based on the above embodiments and examples, but are not limited to the above embodiments and examples, and various modifications, alterations, and improvements may be made to the disclosed elements (including the elements described in the claims, specification, and drawings) based on the basic technical ideas of the present invention. Further, various combinations, permutations, and selections of the disclosed elements are possible within the scope of the claims of the present invention.

Further objects, purposes and modes of the present invention (including modifications) will be apparent from the entire disclosure of the present invention including the claims.

The numerical ranges described in the present specification should be interpreted as any numerical value or range included in the range is specifically described in the present specification even if the numerical values are not specifically described.

Some or all of the above embodiments may be described as follows, but are not limited to the following. The supplementary notes may also be combined with the claims recited in the claims.

[ additional note 1]

A method for producing an oil-in-water type cleaning composition, comprising the steps of:

a melting step of melting the 1 st nonionic surfactant;

a water adding step of adding water to the melted 1 st nonionic surfactant and stirring the mixture; and

and an emulsification step of emulsifying the oil phase with the lamellar gel phase thus produced.

[ additionally noted 2]

According to the production method described in the attached paragraph, the 1 st nonionic surfactant and the 2 nd nonionic surfactant are melted in the melting step.

[ additionally recorded 3]

According to the production method described in the attached paragraph, the nonionic surfactant is heated to a heating temperature of + -15 ℃ relative to the 1 st nonionic surfactant before the addition in the water addition step.

[ additional note 4]

a solution preparation step of preparing a solution by dissolving the 1 st nonionic surfactant in a polyhydric alcohol;

a step of adding an oily component to the solution to emulsify the solution; and

and a step of adding water after emulsification.

[ additional note 5]

According to the method of production described in the attached paragraph, the 1 st nonionic surfactant and the 2 nd nonionic surfactant are melted in the solution production step.

[ additional note 6]

According to the method of the present invention, the polyol is 2-membered polyol.

[ additionally noted 7]

According to the method of production described in the attached paragraph, the 1 st nonionic surfactant is represented by the formula described in the above formula 1.

[ additionally recorded 8]

According to the production method described in the supplementary note, the 2 nd nonionic surfactant is at least 1 selected from the compounds represented by the formulas described in formulas 2 to 5.

[ additional note 9]

A method of use, the oil-in-water cleansing compositions of the present disclosure are applied to cleansing of cosmetic materials.

Industrial applicability

The oil-in-water cleaning compositions of the present disclosure may be applied, for example: a cleaning material for skin, a cleaning material for hair, etc. For example, the oil-in-water cleansing compositions of the present disclosure may be applied to make-up cleansing, shampoos, and the like.

Claims

1. An oil-in-water cleaning composition comprising:

a lamellar gel phase,

3 to 80 mass% of an oil phase, and

an aqueous phase, a water phase,

the lamellar gel phase comprises a 1 st nonionic surfactant represented by the following formula 1

A 2 nd nonionic surfactant having HLB of 7 to 15,

chemical 1:

in the formula shown in formula 1, R ¹ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms, R ² Is alkylene with 2-4 carbon atoms, R ³ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms, and k represents an integer of 4 to 15.

2. The cleaning composition of claim 1, the 1 st nonionic surfactant and the 2 nd nonionic surfactant comprising at least a portion of the lamellar gel phase.

3. The cleaning composition according to claim 1 or 2, wherein the oil phase is emulsified by the lamellar gel phase.

4. A cleaning composition according to claim 1 to 3, wherein the 1 st nonionic surfactant is present in an amount of 0.1 to 10% by mass relative to the mass of the cleaning composition,

the 2 nd nonionic surfactant is 0.5 to 6 parts by mass based on 1 part by mass of the 1 st nonionic surfactant.

5. The cleaning composition according to any one of claims 1 to 4, wherein the 1 st nonionic surfactant is polyethylene glycol distearate having a k of 4 to 8 in the formula shown in formula 1.

6. The cleaning composition according to any one of claims 1 to 5, wherein the 2 nd nonionic surfactant is at least 1 selected from the group consisting of compounds represented by the formulas represented by formulas 2 to 5,

chemical 2:

in the formula shown in the formula 2, R ⁴ Is of 16-24 carbon atomsStraight-chain acyl or straight-chain alkyl, R ⁵ Is an alkylene group having 2 to 4 carbon atoms, l represents an integer of 5 to 20,

chemical 3:

in the formula shown in formula 3, R ⁶ 、R ¹⁰ And R is ¹⁴ Alkylene groups each having 2 to 4 carbon atoms, R ⁷ 、R ¹¹ And R is ¹⁵ Alkylene groups each having 8 to 12 carbon atoms, R ⁸ 、R ¹² And R is ¹⁶ Respectively alkyl with 4-8 carbon atoms, R ⁹ 、R ¹³ And R is ¹⁷ A polymer of 12-hydroxystearic acid or a polymer of an alkylene polyol, m, n and o are natural numbers, respectively, and the sum of m, n and o is 10 to 60,

and (4) chemical treatment:

in the formula shown in the formula 4, R ¹⁸ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms, R ¹⁹ And R is ²⁰ Alkylene groups each having 2 to 4 carbon atoms, p and q are each a natural number, and the sum of p and q is 5 to 20,

and (5) chemical treatment:

in the formula shown in the formula 5, R ²¹ 、R ²² 、R ²³ And R is ²⁵ Alkylene groups each having 2 to 4 carbon atoms, r, s, t and u are natural numbers, the total of r, s, t and u is 5 to 30, and R ²⁴ Is a linear acyl group or a linear alkyl group having 16 to 24 carbon atoms.

7. The cleaning composition according to any one of claims 1 to 6, wherein the lamellar gel phase has a high eutectic point and melting enthalpy compared to lamellar gel phases formed by any 1 of the 2 nd nonionic surfactants represented by the formulas of formulas 2 to 5.

8. The cleaning composition according to any one of claims 1 to 7, wherein the HLB of the 1 st nonionic surfactant and the 2 nd nonionic surfactant is weighted average of 6 to 10.

9. The cleansing composition according to any one of claims 1 to 8, wherein the oil phase contains an oily component having a molecular weight of 400 or less in an amount of 50 mass% or more relative to the mass of the oil phase.

10. The cleaning composition according to any one of claims 1 to 9, the lamellar gel phase further comprising water.

11. The cleaning composition according to any one of claims 1 to 10, wherein the content of higher fatty alcohol or higher fatty acid is 1 mass% or less relative to the mass of the cleaning composition.