Oil-in-water emulsion composition

Abstract

The present invention provides an oil-in-water emulsion composition containing the following components (A), (B), (C), (D) and (E): (A) a hydrocarbon oil that is liquid at 25 DEG C; (B) one or more components that are liquid at 25 DEG C and that are selected from among higher fatty acids, higher alcohols, and ester oils; (C) 0.1-5 mass% of one or more substances selected from a cationic surfactant and an amphoteric surfactant; (D) 2-20 mass% of at least one selected from ceramides, hydrocarbon oils that are pasty at 25 DEG C, and ester oils that are pasty at 25 DEG C; and (E) water; wherein the total content (A) + (B) of the components (A) and (B) is 1-30 mass%, and the mass ratio (B) / ((A) + (B)) of the component (B) to the total amount of the components (A) and (B) is 0.05-0.9.

Description

Technical Field

[0001] The present invention relates to an oil-in-water emulsion composition. Background Art

[0002] It is known that whole body moisturizing care is performed by applying cosmetics having a moisturizing effect or the like to the dry state of the body immediately after bathing and going to bed.

[0003] Compositions containing ceramides with high moisturizing effects have been studied, for example: ceramide dispersion compositions containing natural ceramides, polyols, nonionic surfactants, amphoteric surfactants, and cationic surfactants (Patent Document 1); and emulsified compositions containing sphingosine, sphingosine-like, salts of these, compounds selected from anionic surfactants and cationic surfactants, ceramides, glycerol monofatty acid esters, higher alcohols, and water (Patent Document 2).

[0004] (Patent Document 1) Japanese Patent Application Laid-Open No. 2015-30705

[0005] (Patent Document 2) Japanese Patent Application Laid-Open No. 2007-22997 Summary of the invention

[0006] The oil-in-water emulsion composition of the present invention contains the following components (A), (B), (C), (D) and (E):

[0007] (A) Hydrocarbon oils that are liquid at 25°C;

[0008] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C;

[0009] (C) one or more selected from cationic surfactants and amphoteric surfactants: 0.1 to 5% by mass;

[0010] (D) one or more selected from ceramides, hydrocarbon oils that are pasty at 25°C, and ester oils that are pasty at 25°C: 2 to 20% by mass; and

[0011] (E) Water,

[0012] The total content (A)+(B) of components (A) and (B) is 1 to 30% by mass, and the mass ratio (B) / ((A)+(B)) of component (B) to the total amount of components (A) and (B) is 0.05 to 0.9.

[0013] In addition, the oil-in-water emulsion composition according to the present invention contains the following components (A), (B), (C), (D) and (E):

[0014] (A) Hydrocarbon oils that are liquid at 25°C;

[0015] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C;

[0016] (C) cationic surfactant: 0.1 to 5% by mass;

[0017] (D) ceramides: 1 to 20% by mass; and

[0018] (E) Water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram showing a method of sampling from a site to which the oil-in-water emulsion composition has been applied in the test example. DETAILED DESCRIPTION

[0020] For people with dry and sensitive skin, even if they apply cosmetics all over their skin after bathing, the effects are not fully sustained / improved, and they have the problem of repeated dryness and roughness of their skin all over their skin. For example, after applying cosmetics, if you sweat or come into contact with water, the cosmetics will flow and fall off the skin, impairing the moisturizing effect. In addition, after bathing, if you wipe your wet skin with a towel and then apply cosmetics all over your skin, it will take time to wipe the skin with the towel, and when applying the extended cosmetics on the dry skin after wiping the skin, the cosmetics are not easy to spread, and it takes a lot of time to apply and spread. Therefore, the total time of wiping the wet skin with a towel and applying the extended cosmetics all over the skin is quite time-consuming, and there is also the problem of the skin starting to dry out during this period.

[0021] In addition, cosmetics with high moisturizing effects tend to feel sticky or greasy.

[0022] Furthermore, even if the stickiness after applying cosmetics is suppressed, there is a problem that people who are still concerned about applying cosmetics on their skin want to rinse off the cosmetics by showering or the like after application. However, if the cosmetics are rinsed off, the cosmetics will be washed off the skin, and the moisturizing feeling and the glossy feeling after application will not be obtained.

[0023] The present inventors have discovered an oil-in-water emulsion composition, which contains two or more specific liquid oils in a specific ratio, and further contains: one or more selected from a cationic surfactant and an amphoteric surfactant; and one or more components selected from ceramides, hydrocarbon oils that are pasty at 25°C, and ester oils that are pasty at 25°C. When the composition is applied to the skin after drying, the oil-in-water emulsion composition has excellent absorption feeling and excellent moisturizing feeling after subsequent rinsing with water. When applied to the skin moistened with water, it is easy to spread and has no sticky or greasy feeling, and can obtain a film-like feeling and a protective feeling. In addition, after applying to the moistened skin, even if it is rinsed with water, the skin still has excellent gloss and no stickiness.

[0024] When the oil-in-water emulsion composition of the present invention is applied to skin moistened with water, the oil-in-water emulsion composition remains on the skin even when wiped off with a towel, and a film-like feeling and a protective feeling can be obtained.

[0025] The component (A) used in the present invention is a hydrocarbon oil which is liquid at 25°C.

[0026] In the present invention, "liquid" means that the viscosity at 25° C. is 10,000 mPa·s or less. The viscosity is a value measured using a B-type viscometer (VISCOMETER TVB-10, manufactured by Toki Sangyo Co., Ltd.) with rotor No. 4, 12 rpm, and 1 minute.

[0027] Examples of the hydrocarbon oil of the component (A) include squalane, squalene, liquid paraffins, liquid isoparaffins, light isoparaffins, light liquid isoparaffins, heavy liquid isoparaffins, α-olefin oligomers, and isododecane.

[0028] The hydrocarbon oil preferably contains one or more selected from squalane, liquid paraffin, liquid isoparaffin, light liquid isoparaffin, light isoparaffin, and α-olefin oligomers, more preferably contains one or more selected from squalane, liquid paraffin, liquid isoparaffin, and α-olefin oligomers, further preferably contains one or more selected from liquid paraffin, liquid isoparaffin, and α-olefin oligomers, and further more preferably contains liquid paraffin.

[0029] Regarding component (A), one or more than one may be used, and from the perspective of improving stability, absorption feeling when applied to the skin after wiping, moisturizing feeling after washing with water, easy application and extension when applied to the moistened skin, no greasy feeling when applied, film feeling and protection feeling, moisturizing feeling the next morning, skin gloss after applying to the skin and then washing with water, and no stickiness, its content is preferably 0.1% by mass or more, more preferably 1% by mass or more, more preferably 2% by mass or more, and more preferably 4% by mass or more in the total composition, and preferably 20% by mass or less, more preferably 10% by mass or less, more preferably 7% by mass or less, more preferably 6.5% by mass or less, and more preferably 6% by mass or less. In addition, the content of component (A) in the total composition is preferably 0.1-20% by mass, more preferably 1-10% by mass, more preferably 1-7% by mass, more preferably 2-6.5% by mass, and more preferably 4-6% by mass.

[0030] Component (B) is a component that is liquid at 25°C and is one or more selected from higher fatty acids, higher alcohols, and ester oils.

[0031] Among the component (B), examples of higher fatty acids include oleic acid, isostearic acid, undecylenic acid, etc. Among these, it is preferred to contain one or more selected from oleic acid and isostearic acid from the viewpoint of improving the moisturizing feeling after applying to the skin after drying and then washing with water, the film-covering feeling and protective feeling when applying to the moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after applying to the skin and then washing with water.

[0032] Examples of higher alcohols include octanol, decanol, 2-octyldodecanol, hexyldecanol, isostearyl alcohol, oleyl alcohol, etc. Among these, from the viewpoint of improving the moisturizing feeling after applying to the skin after drying and then washing with water, the film-covering feeling and protective feeling when applying to the moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after applying to the skin and then washing with water, it is preferred to contain 2-octyldodecanol, isostearyl alcohol, and oleyl alcohol, and it is more preferred to contain one or more selected from isostearyl alcohol and oleyl alcohol.

[0033] Examples of the ester oil include monoester oil, diester oil, triester oil, and tetraester oil, and any ester oil may be used as long as it is liquid at 25°C.

[0034] Examples of the monoester oil include monoesters of aliphatic or aromatic monocarboxylic acids or dicarboxylic acids having 2 to 24 carbon atoms, and specifically include cetyl 2-ethylhexanoate, cetyl octanoate, isononyl isononanoate, isotridecanol isononanoate, hexyl laurate, isopropyl myristate, octyldodecyl myristate, myristyl myristate, 2-hexyldecyl myristate, isopropyl palmitate, octyl palmitate, 2-hexyldecyl palmitate, butyl stearate, isocetyl stearate, isocetyl isostearate, decyl oleate, isodecyl benzoate, octyl methoxycinnamate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, 2-ethylhexyl succinate, 2-hexyldecyl adipate, and alkyl (C12 to C15) benzoate.

[0035] As the monoester oil, from the viewpoints of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping off, the moisturizing feeling after washing with water, the ease of application and spread when applied to moistened skin, the non-greasy feeling when applied, the film-like feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after rinsing with water after application to the skin, and the non-sticky feeling, it is preferred to contain one or more selected from isononyl isononanoate, isotridecanol isononanoate, and octyldodecyl myristate, and it is more preferred to contain isononyl isononanoate.

[0036] Examples of the diester oil include diesters of dicarboxylic acids having 3 to 18 carbon atoms and difatty acid esters of polyhydric alcohols. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprate, ethylene glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monoisostearate monomyristate, glyceryl di(2-heptylundecanoate), di(2-ethylhexyl) succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di(2-ethylhexanoate), diisobutyl adipate, di(2-heptylundecanol) adipate, and di(2-ethylhexanol) sebacate. Examples of the acylamino acid esters include acylamino acid diesters such as N-lauroyl-L-glutamic acid di(cholesterol / 2-octyldodecanol) ester and N-lauroyl-L-glutamic acid di(phytosterol / 2-octyldodecanol) ester.

[0037] As the diester oil, from the viewpoints of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after drying, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-slippery feeling when applied, the film-like feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after washing with water after application to the skin, and the non-sticky feeling, it is preferable to contain propylene glycol dicaprylate, neopentyl glycol dicaprate, N-lauroyl-L-glutamic acid di(cholesterol / 2-octyldodecanol) ester, N-lauroyl-L-glutamic acid di(phytosterol / 2-octyldodecanol) ester, The diester oil is preferably one or more selected from neopentyl glycol dicaprate, N-lauroyl-L-glutamate di(cholesterol / 2-octyldodecanol) ester, and N-lauroyl-L-glutamate di(phytosterol / 2-octyldodecanol) ester. It is more preferably one or more selected from neopentyl glycol dicaprate and N-lauroyl-L-glutamate di(phytosterol / 2-octyldodecanol) ester, and it is even more preferably one selected from neopentyl glycol dicaprate and N-lauroyl-L-glutamate di(phytosterol / 2-octyldodecanol) ester. The diester oil is preferably an acylamino acid ester.

[0038] Examples of triester oils include triglycerol fatty acid esters, preferably triglycerides in which one or more constituent fatty acids are fatty acids having 6 to 22 carbon atoms. From the viewpoints of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the moisturizing feeling after washing with water, the ease of application and spread when applied to moistened skin, the non-greasy feeling when applied, the film-like feeling and protective feeling, the moisturizing feeling the next morning, the skin gloss after rinsing with water after application to the skin, and the non-sticky feeling, triglycerides in which two or more constituent fatty acids are fatty acids having 6 to 22 carbon atoms are more preferred, and triglycerides in which all constituent fatty acids are fatty acids having 6 to 22 carbon atoms are more preferred.

[0039] Examples of the triglycerol fatty acid ester include tri(caprylic acid / capric acid) glyceryl, tri(caprylic acid / capric acid / myristic acid / stearic acid) glyceryl, tri(2-ethylhexanoic acid) glyceryl, tricaprylic acid glyceryl, tri(ethylhexanoic acid) glyceryl, tristearin, triisostearin, tripalmitin, tri(2-heptylundecanoic acid) glyceryl, tribehenin, trimyristin, trilaurin, triolein, trilinolein, tripalmitolein, etc. Also examples include tricoconut fatty acid glyceryl, olive oil, jojoba oil, macadamia oil, meadowfoam seed oil, castor oil, safflower oil, sunflower oil, avocado oil, canola oil, almond oil, rice germ oil, rice bran oil and other vegetable oils.

[0040] Among these, from the viewpoints of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping off, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-slippery feeling when applied, the film feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss feeling after rinsing with water after application to the skin, and the non-sticky feeling, it is preferable to contain tri(caprylic acid / capric acid)glyceryl, tri(caprylic acid / capric acid / myristic acid / stearic acid)glyceryl, tri(2-ethylhexanoic acid)glyceryl, tricaprylic acid, tri(ethylhexanoic acid)glyceryl, tristearic acid One or more selected from oily esters, triisostearin, tripalmitin, triolein, and vegetable oils, more preferably one or more selected from tri(caprylic acid / capric acid)glyceryl, tri(2-ethylhexanoic acid)glyceryl, and vegetable oils, further preferably one or more selected from tri(caprylic acid / capric acid)glyceryl, tri(2-ethylhexanoic acid)glyceryl, olive oil, and jojoba oil, further more preferably one or more selected from tri(caprylic acid / capric acid)glyceryl and olive oil, and further preferably tri(caprylic acid / capric acid)glyceryl.

[0041] Examples of the tetraester oil include tetrafatty acid esters of tetravalent or higher polyhydric alcohols, and specific examples include pentaerythritol tetra(behenic acid / benzoic acid / ethylhexanoate), pentaerythritol tetra(ethylhexanoate), pentaerythritol tetraoctanoate, and pentaerythritol tetra(2-ethylhexanoate).

[0042] As component (B), from the viewpoints of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping off, the moisturizing feeling after washing with water, the ease of application and spread when applied to moistened skin, the non-slippery feeling when applied, the film feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss feeling after rinsing with water after application to the skin, and the non-sticky feeling, it is preferred to contain one or more selected from monoester oil, diester oil and triester oil, more preferably contain diester oil, and even more preferably contain acylamino acid diester.

[0043] In addition, as component (B), from the viewpoints of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping off, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-greasy feeling when applied, the film feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after rinsing with water after application to the skin, and the non-sticky feeling, it is preferred to contain one or more selected from N-lauroyl-L-glutamate di(phytosteryl·2-octyldodecanol), neopentyl glycol dicaprate, isononyl isononanoate, and tri(caprylic acid·capric acid)glyceryl, and it is more preferred to contain N-lauroyl-L-glutamate di(phytosteryl·2-octyldodecanol) ester.

[0044] Regarding component (B), one or more than one component may be used in combination. From the perspective of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the moisturizing feeling after washing with water, the ease of application and spreading when applied to the moistened skin, the non-slippery feeling when applied, the film feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after applying to the skin and then washing with water, and the non-sticky feeling, the content is preferably 0.5% by mass or more, more preferably 1% by mass or more, further preferably 1.5% by mass or more, and further more preferably 2% by mass or more in the total composition, and preferably 10% by mass or less, more preferably 8% by mass or less, further preferably 6% by mass or less, and further more preferably 4% by mass or less. In addition, the content of component (B) in the total composition is preferably 0.5-10% by mass, more preferably 1-8% by mass, further preferably 1.5-6% by mass, and further more preferably 2-4% by mass.

[0045] In the present invention, from the viewpoints of improving stability, absorption feeling when applied to dry skin, moisturizing feeling after washing with water, easy application and spread when applied to moistened skin, non-slippery feeling when applied, film feeling and protective feeling, moisturizing feeling the next morning, skin gloss after rinsing with water after application to the skin, and non-stickiness, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.1 or more, more preferably 0.45 or more, and even more preferably 1.1 or more, and is preferably 10 or less, more preferably 7 or less, and even more preferably 3 or less. In addition, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.1 to 10, more preferably 0.45 to 7, and even more preferably 1.1 to 3.

[0046] In the present invention, from the viewpoint of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-slippery feeling when applied, the film feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after applying to the skin and then washing with water, and the non-sticky feeling, the total content of components (A) and (B) in the total composition ((A) + (B)) is preferably 1% by mass or more, more preferably 2% by mass or more, further preferably 3% by mass or more, and further more preferably 5% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, further preferably 15% by mass or less, and further more preferably 10% by mass or less. In addition, the total content of components (A) and (B) in the total composition ((A) + (B)) is preferably 1 to 30% by mass, more preferably 2 to 20% by mass, more preferably 3 to 15% by mass, and further more preferably 5 to 10% by mass.

[0047] In the present invention, the mass ratio (B) / ((A)+(B)) of the component (B) to the total amount of the components (A) and (B) is preferably 0.05 or more, more preferably 0.1 or more, further preferably 0.15 or more, further preferably 0.3 or more, and further preferably 0.35 or more, and is preferably 0.9 or less, more preferably 0.8 or less, further preferably 0.75 or less, further preferably 0.7 or less, and further preferably 0.5 or less, from the viewpoint of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-slippery feeling when applied, the film-like feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after rinsing with water after application to the skin, and the non-sticky feeling. The mass ratio (B) / ((A)+(B)) of the component (B) relative to the total amount of the components (A) and (B) is preferably 0.05 to 0.9, more preferably 0.1 to 0.8, more preferably 0.15 to 0.75, further preferably 0.3 to 0.7, further more preferably 0.35 to 0.5.

[0048] Component (C) is one or more selected from cationic surfactants and amphoteric surfactants.

[0049] The cationic surfactant as component (C) may be any one generally used in cosmetics, and examples thereof include quaternary ammonium salt type cationic surfactants and amine salt type cationic surfactants, preferably quaternary ammonium salt type cationic surfactants. In addition, examples of amine salt type cationic surfactants include alkylamine salts.

[0050] Among such cationic surfactants, quaternary ammonium salt type cationic surfactants represented by the following general formula (1) are preferred.

[0051]

[0052] [In formula (1),

[0053] R 1 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms;

[0054] R 2 represents an alkyl group having 1 to 4 carbon atoms;

[0055] R 3 With R 4 Each independently represents an alkyl group having 1 to 4 carbon atoms, or a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms;

[0056] AN - Indicates that the salt forms an anion.]

[0057] In the general formula (1), R 1 , R 3 and R 4 The number of carbon atoms in the "linear, branched or cyclic saturated or unsaturated hydrocarbon group" is preferably 6-30, more preferably 8-24, more preferably 12-22, and even more preferably 16-20.

[0058] Examples of the hydrocarbon group include an alkyl group, an alkenyl group, and an aralkyl group. Among these, an alkyl group and an alkenyl group are preferred, and an alkyl group is more preferred.

[0059] The number of carbon atoms in the alkyl group is the same as described above, preferably 6 to 30, more preferably 8 to 24, further preferably 12 to 22, and further more preferably 16 to 20. In addition, the alkyl group may be linear or branched, and examples thereof include octyl, nonyl, decyl, undecyl, 1-methyldecyl, dodecyl, 1-methylundecyl, 1-ethyldecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, octadecyl, and behenyl.

[0060] The alkenyl group may be linear or branched, and examples thereof include decenyl, undecenyl, dodecenyl, tetradecenyl, and hexadecenyl.

[0061] Examples of the aralkyl group include a benzyl group and a phenethyl group.

[0062] R 2 , R 3 and R 4 The carbon number of the "alkyl group having 1 to 4 carbon atoms" is preferably 1 or 2, more preferably 1. The alkyl group may be linear or branched, and examples thereof include methyl, ethyl, n-propyl, isopropyl, n-butyl, and isobutyl.

[0063] As R 3 With R 4 Combinations of, for example: R 3 With R 4 are all alkyl groups with 1 to 4 carbon atoms; 3 With R 4 A combination of one of them being an alkyl group having 1 to 4 carbon atoms and the other being a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms; R 3 With R 4 are all linear, branched or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms. Among these combinations, preferably: R 3 With R 4 are all alkyl groups with 1 to 4 carbon atoms; 3 With R4 A combination of one of the groups being an alkyl group having 1 to 4 carbon atoms and the other being a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms. More preferably: R 3 With R 4 A combination of one of the two groups being an alkyl group having 1 to 4 carbon atoms and the other being a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms.

[0064] In general formula (1), AN - It represents a salt-forming anion, for example, a halide ion (e.g., chloride ion, iodide ion), a sulfate ion, a phosphate ion, an acetate ion, a lactate ion, a p-toluenesulfonate ion, a perchlorate ion, a monoalkyl nitrate ion (e.g., methylsulfate ion, ethylsulfate ion), etc., preferably a halide ion.

[0065] Examples of the cationic surfactant include monoalkyltrimethylammonium salts such as octyltrimethylammonium chloride, decyltrimethylammonium chloride, lauryltrimethylammonium chloride, tetradecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, stearyltrimethylammonium chloride, and behenyltrimethylammonium chloride; dialkyldimethylammonium salts such as didecyldimethylammonium chloride and distearyldimethylammonium chloride; and trialkylmethylammonium salts.

[0066] Among these, it is preferred to contain at least one selected from monoalkyltrimethylammonium salts and dialkyldimethylammonium salts, and it is more preferred to contain dialkyldimethylammonium salts. In addition, it is preferred to contain at least one selected from behenyltrimethylammonium chloride and distearyldimethylammonium chloride, and it is more preferred to contain distearyldimethylammonium chloride.

[0067] The amphoteric surfactant of component (C) may be any one generally used in cosmetics, and examples thereof include betaine-acetic acid surfactants such as lauryldimethylaminoacetic acid betaine; amine oxide surfactants such as lauryldimethylamine oxide; imidazoline betaine surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazoline betaine; amide betaine surfactants such as laurylamidopropyl betaine; sulfonate betaine surfactants such as laurylhydroxysulfonate; amino acid amphoteric surfactants, etc.

[0068] Among these, from the viewpoint of improving the emulsification property and the stability of the oil-in-water emulsion composition, it is preferred to contain one or more selected from amino acid amphoteric surfactants, sulfobetaine type surfactants, amide betaine type surfactants, and imidazoline betaine type surfactants, more preferably one or more selected from amino acid amphoteric surfactants, sulfobetaine type surfactants, and amide betaine type surfactants, further preferably one or more selected from amino acid amphoteric surfactants and sulfobetaine type surfactants, and even more preferably an amino acid surfactant.

[0069] As such amphoteric surfactants, commercially available products such as N-[3-alkyl (12, 14) oxy-2-hydroxypropyl]-L-arginine hydrochloride (AMISAFE LMA-60, manufactured by Ajinomoto Co., Ltd.), lauryl hydroxysulfonyl betaine (AMPHITOL 20HD, manufactured by Kao Corporation), and lauryl amide propyl betaine (AMPHITOL 20AB, manufactured by Kao Corporation) can be used. Among them, N-[3-alkyl (12, 14) oxy-2-hydroxypropyl]-L-arginine hydrochloride (AMISAFE LMA-60 (manufactured by Ajinomoto Co., Ltd.) is preferred.

[0070] As component (C), cationic surfactants are preferred from the viewpoints of improving emulsification and stability of the oil-in-water emulsion composition, and from the viewpoints of improving absorption feeling when applied to dry skin, moisturizing feeling after washing with water, ease of application and spread when applied to moistened skin, non-slippery feeling, film feeling and protective feeling when applied, moisturizing feeling the next morning, skin gloss after application and washing with water, and non-stickiness.

[0071] Regarding component (C), one or more than one may be used, and from the perspective of improving emulsification, stability of oil-in-water emulsion composition, absorption feeling when applied to dry skin, moisturizing feeling after washing with water, easy application and spreading when applied to moistened skin, no greasy feeling when applied, film feeling and protection feeling, moisturizing feeling the next morning, skin gloss after washing with water after application to skin, and no stickiness, its content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.3% by mass or more, further more preferably 0.5% by mass or more in the total composition, and preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, further more preferably 1% by mass or less. In addition, the content of component (C) in the total composition is preferably 0.1 to 5% by mass, more preferably 0.2 to 3% by mass, further preferably 0.3 to 2% by mass, further more preferably 0.5 to 1% by mass.

[0072] In addition, when component (C) is a cationic surfactant, from the perspective of improving emulsification, stability of the oil-in-water emulsion composition, absorption feeling when applied to the skin after wiping, moisturizing feeling after washing with water, easy application and spreading when applied to the moistened skin, no greasy feeling when applied, film feeling and protection feeling, moisturizing feeling the next morning, skin gloss after washing with water after application to the skin, and no stickiness, its content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.3% by mass or more, further more preferably 0.5% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, further more preferably 1% by mass or less. In addition, when component (C) contains a cationic surfactant, its content is preferably 0.1-5% by mass, more preferably 0.2-3% by mass, further preferably 0.3-2% by mass, further more preferably 0.5-1% by mass in the total composition.

[0073] In the present invention, from the viewpoint of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-slippery feeling when applied, the film feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after applying to the skin and then rinsing with water, and the non-sticky feeling, the mass ratio (B) / (C) of the component (B) to the component (C) is preferably 0.1 or more, more preferably 1 or more, and even more preferably 2.8 or more, and is preferably 20 or less, more preferably 6.8 or less, and even more preferably 5 or less. In addition, the mass ratio (B) / (C) of the component (B) to the component (C) is preferably 0.1 to 20, more preferably 1 to 6.8, and even more preferably 2.8 to 5.

[0074] Component (D) is at least one selected from ceramides, hydrocarbon oils that are pasty at 25°C, and ester oils that are pasty at 25°C.

[0075] In the present invention, the so-called "paste-like" means that the viscosity at 25°C is greater than 10,000 mPa·s. The viscosity is measured in the same manner as for component (A). In addition, it refers to a component having a consistency of 100 to 430. The consistency here is measured in accordance with JIS K 2235 5.10. JIS K 2235 5.10 is a measurement method for petroleum wax, and in the present invention, JIS K 2235 5.10 is also used for the measurement of component (D) other than petroleum wax.

[0076] The hydrocarbon oil in a paste state at 25°C or the ester oil in a paste state at 25°C as component (D) preferably has a viscosity of 130 or more, more preferably 150 or more, and even more preferably 170 or more, and preferably 400 or less, more preferably 350 or less, even more preferably 300 or less, and even more preferably 250 or less. The viscosity is preferably 130 to 400, more preferably 130 to 350, even more preferably 150 to 300, and even more preferably 170 to 250.

[0077] In component (D), ceramides include natural ceramides, sphingosine derivatives, and ceramide-like structures described in Japanese Patent Application Laid-Open No. 62-228048, Japanese Patent Application Laid-Open No. 63-216812, Japanese Patent Application Laid-Open No. 63-227513, Japanese Patent Application Laid-Open No. 64-29347, Japanese Patent Application Laid-Open No. 64-31752, Japanese Patent Application Laid-Open No. 8-319263, etc. Specifically, from the viewpoint of improving the moisturizing feeling after application to dry skin and then washing with water, the film-like feeling and protective feeling after application to moistened skin, the moisturizing feeling the next morning, and the skin gloss after application to the skin and then washing with water, the compound selected from the compound represented by the following general formula (2) and the compound represented by the general formula (3) is preferred, and the compound represented by the general formula (2) is preferred.

[0078]

[0079] [Where R 1b represents a hydrocarbon group having 10 to 26 carbon atoms, R 2b represents a hydrocarbon group having 9 to 25 carbon atoms, and X represents -(CH2) n -(wherein n represents an integer from 2 to 6). ]

[0080]

[0081] (Where: R 11 With R 12 are the same or different and represent a hydrocarbon group having 1 to 40 carbon atoms and having or not having a hydroxyl group; R 13 represents an alkylene group having 1 to 6 carbon atoms or a single bond; R 14 represents a hydrogen atom, an alkoxy group having 1 to 12 carbon atoms, or a 2,3-dihydroxypropoxy group. 13 When it is a single bond, R 14 is a hydrogen atom.)

[0082] In the above general formula (2) and general formula (3), the hydrocarbon group is preferably an alkyl group or an alkenyl group.

[0083] Examples of the compound represented by the general formula (2) include N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanoic acid amide, and examples of the compound represented by the general formula (3) include long-chain dibasic acid bis(3-methoxypropionamide).

[0084] The compound represented by the general formula (2) is a pseudoceramide, which is a ceramide functional ingredient and can assist the action of ceramide to improve skin condition (water content, etc.).

[0085] Examples of the paste-like hydrocarbon oil of component (D) include vaseline and hydrocarbon oil.

[0086] In the component (D), examples of the paste-like ester oil include vegetable waxes such as shea butter, cholesterol isostearate, cholesterol hydroxystearate, macadamia oil fatty acid cholesterol ester, N-lauroyl-L-glutamic acid di(cholesterol-behenyl alcohol-octyldodecanol) ester, and cholesterol derivatives such as lanolin fatty acid cholesterol ester;

[0087] Phytosterol derivatives such as N-lauroyl-L-glutamate di(phytosteryl / behenyl alcohol / 2-octyldodecanol) ester, phytosteryl isostearate, phytosteryl oleate, di(phytosteryl / isostearyl / cetyl alcohol / stearyl alcohol / behenyl alcohol) dilinoleate;

[0088] Dipentaerythritol fatty acid esters such as dipentaerythritol hexahydroxystearate, dipentaerythritol rosin acid, and dipentaerythritol tripolyhydroxystearate;

[0089] Triglycerides such as caprylic acid, capric acid, myristic acid, and stearic acid triglyceride, trilanolin fatty acid glyceride, and tribehenin;

[0090] Hydrogenated oils and other partially hydrogenated triglycerides, lanolin, lanolin fatty acids, lanosterol derivatives, lanolin fatty acid esters;

[0091] Dimer linoleate of hydrogenated castor oil, dimer linoleic acid (phytosteryl / isostearyl / cetyl alcohol / stearyl alcohol / behenyl alcohol) ester, dimer linoleic acid dimer linoleyl bis (behenyl alcohol / isostearyl alcohol / phytosterol) ester, dimer linoleic acid dimer linoleyl bis (behenyl alcohol / isostearyl alcohol / phytosterol) ester, trihydrogenated rosin acid glyceryl and other dimer linoleate;

[0092] Diglyceryl polyacyl adipate-2 and other diglyceryl adipate mixed fatty acid esters;

[0093] Acyl amino acid esters such as N-lauroyl-L-glutamate di(phytosterol / behenyl alcohol / octyl dodecanol) ester, N-lauroyl-L-glutamate di(phytosterol / behenyl alcohol / octyl dodecanol) ester, and N-lauroyl-L-glutamate di(phytosterol / behenyl alcohol / 2-octyl dodecanol) ester.

[0094] As component (D), from the viewpoints of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping off, the moisturizing feeling after washing with water, the ease of application and spread when applied to moistened skin, the non-slippery feeling when applied, the film-like feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after rinsing with water after application to the skin, and the non-sticky feeling, it is preferred that the component (D) contains at least one selected from dimer linoleic acid ester, acyl amino acid ester, petrolatum, and ceramides, more preferably contains at least one selected from petrolatum and ceramides, further preferably contains ceramides, and among ceramides, it is further preferred that the component (D) contains N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanoic acid amide.

[0095] In addition, from the viewpoint of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping off, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-slippery feeling when applied, the film-like feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss after rinsing with water after application to the skin, and the non-sticky feeling, it is preferred to contain both of the following: at least one selected from hydrocarbon oils that are pasty at 25°C and ester oils that are pasty at 25°C, and at least one selected from ceramides, more preferably, it contains both of the following: at least one selected from hydrocarbon oils that are pasty at 25°C, and at least one selected from ceramides, further preferably, it contains both of the following: vaseline and at least one selected from ceramides, and even more preferably, it contains both of the following: vaseline and N-(hexadecyloxyhydroxypropyl)-N-hydroxyethyl hexadecanoic acid amide.

[0096] In addition, from the perspective of moisturizing feeling after applying to the skin after wiping and then washing with water, the film feeling and protection feeling after applying to the moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after applying to the skin and then washing with water, the ceramides contained as component (D) in the total composition are preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 1% by mass or more, and further preferably 2% by mass or more, and preferably 20% by mass or less, more preferably 10% by mass or less, further preferably 8% by mass or less, further more preferably 6% by mass or less, and further preferably 4% by mass or less. The ceramides contained as component (D) in the total composition are preferably 0.01 to 20% by mass, more preferably 0.01 to 10% by mass, further preferably 0.05 to 8% by mass, further more preferably 1 to 6% by mass, and further preferably 2 to 4% by mass.

[0097] Regarding component (D), one or more kinds of component (D) may be used. From the viewpoint of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping off, the moisturizing feeling after washing with water, the ease of application and spread when applied to the moistened skin, the non-slippery feeling when applied, the film feeling and the protective feeling, the moisturizing feeling the next morning, the skin gloss feeling after rinsing with water after application to the skin, and the non-sticky feeling, the content thereof is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, further preferably 0.5% by mass or more, further more preferably 1% by mass or more, further more preferably 2% by mass or more, and particularly preferably 3% by mass or more in the total composition, and is preferably 30% by mass or less, more preferably 20% by mass or less, further preferably 15% by mass or less, further more preferably 12% by mass or less, further preferably 10% by mass or less, and particularly preferably 7% by mass or less. The content of component (D) in the total composition is preferably 0.01 to 30% by mass, more preferably 0.1 to 20% by mass, further preferably 0.5 to 15% by mass, further more preferably 1 to 12% by mass, further more preferably 2 to 10% by mass, and particularly preferably 3 to 7% by mass.

[0098] In the present invention, from the viewpoints of improving stability, absorption feeling when applied to dry skin, moisturizing feeling after washing with water, easy application and spreading when applied to moistened skin, non-slippery feeling when applied, film-like feeling and protective feeling, moisturizing feeling the next morning, skin gloss after applying to the skin and then washing with water, and non-stickiness, the mass ratio (C) / (D) of component (C) to component (D) is preferably 0.05 or more, more preferably 0.1 or more, and further preferably 0.14 or more, and is preferably 1 or less, more preferably 0.23 or less, and further preferably 0.18 or less. In addition, the mass ratio (C) / (D) of component (C) to component (D) is preferably 0.05 to 1, more preferably 0.1 to 0.23, and further preferably 0.14 to 0.18.

[0099] In the present invention, the water content of component (E) is preferably 30% by mass or more, more preferably 35% by mass or more, further preferably 40% by mass or more, further more preferably 90% by mass or less, and preferably 70% by mass or less, more preferably 60% by mass or less in the total composition from the viewpoint of improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the ease of application and spreading when applied to the moistened skin, and the lack of greasy feeling when applied. In addition, the water content of component (E) in the total composition is preferably 30 to 90% by mass, more preferably 35 to 70% by mass, and further preferably 40 to 60% by mass.

[0100] The oil-in-water emulsion composition of the present invention may further contain (F) a nonionic surfactant having an HLB of 13 or more.

[0101] Here, HLB (Hydrophilic-Lipophilic Balance) is a value indicating the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and is obtained by Griffin's equation for nonionic surfactants.

[0102] The HLB of a mixed surfactant composed of two or more nonionic surfactants is an arithmetic average value obtained by adding the HLB values ​​of the respective nonionic surfactants according to the blending ratio.

[0103] Mixed HLB = Σ(HLBx×Wx) / ΣWx

[0104] HLBx represents the HLB value of nonionic surfactant X.

[0105] Wx represents the weight (g) of the nonionic surfactant X having the HLBx value.

[0106] The nonionic surfactant may be any component generally used in cosmetics, and examples thereof include polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerol fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyoxyethylene phytostanol ethers, polyoxyethylene phytosterol ethers, polyoxyethylene cholestanol ethers, polyoxyethylene cholesterol ethers, silicone surfactants such as polyether-modified silicones, sucrose fatty acid esters, glycerol fatty acid esters, alkyl glycosides, alkyl glyceryl ethers, and the like.

[0107] Among these, it is preferred that the composition contains at least one selected from polyoxyethylene sorbitan fatty acid esters and polyoxyethylene hydrogenated castor oil, and more preferably contains polyoxyethylene sorbitan fatty acid esters, from the viewpoints of preventing oily components from remaining on the skin when the composition is applied to wet skin and then wiped off with a towel or rinsed with water, thereby improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the ease of application and spread when applied to the wet skin, and the lack of a greasy feeling when applied.

[0108] Regarding the nonionic surfactant of component (F), one or more kinds may be used. From the viewpoint of preventing oily components from remaining on the skin when the composition is applied to moistened skin and then wiped with a towel or rinsed with water, thereby improving the absorption feeling when applied to the skin after wiping, the moisturizing feeling after rinsing with water, the film-like feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after application and then rinsing with water, the content thereof is preferably less than 0.1% by mass, more preferably less than 0.05% by mass, and even more preferably substantially not contained in the total composition.

[0109] The oil-in-water emulsion composition of the present invention may further contain a nonionic surfactant having an HLB of less than 13.

[0110] As the nonionic surfactant having an HLB of less than 13, any component generally used in cosmetics may be used, and examples thereof include polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerol fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyoxyethylene phytostanol ethers, polyoxyethylene phytosterol ethers, polyoxyethylene cholestanol ethers, polyoxyethylene cholesterol ethers, silicone surfactants such as polyether-modified silicones, sucrose fatty acid esters, glycerol fatty acid esters, alkyl glycosides, alkyl glyceryl ethers, and the like.

[0111] As a nonionic surfactant with an HLB of less than 13, the HLB is preferably less than 12, more preferably less than 10, and even more preferably less than 8 from the viewpoint of the film-covered and protective feeling after application to moistened skin, the moisturizing feeling the next morning, and the skin gloss after application to the skin and then rinsing with water.

[0112] Among these, it is preferred to contain one or more selected from polyether-modified silicone, glyceryl fatty acid ester, and sorbitan fatty acid ester, and it is more preferred to contain glyceryl fatty acid ester, from the viewpoint of preventing oily components from remaining on the skin when applied to wet skin and then wiped with a towel or rinsed with water, and improving the stability of the oil-in-water emulsion composition, the absorption feeling when applied to the skin after wiping, the ease of application and spread when applied to the wet skin, and the lack of greasy feeling when applied.

[0113] Regarding nonionic surfactants with an HLB of less than 13, one or more than one nonionic surfactant can be used. From the perspective of preventing oily components from remaining on the skin when applied to moistened skin and then wiped with a towel or rinsed with water, thereby improving the absorption feeling when applied to the skin after wiping, the moisturizing feeling after washing with water, the film-like feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss after applying to the skin and then rinsing with water, the content of the nonionic surfactant in the total composition is preferably 3% by mass or less, more preferably 2% by mass or less, further preferably 1% by mass or less, further more preferably 0.5% by mass or less, and further preferably substantially no content.

[0114] The oil-in-water emulsion composition of the present invention may further contain (G) a cationic polymer, thereby making it possible to improve the affinity of the oil-in-water emulsion composition with the skin, enhance the absorption feeling into the skin, and make it easy for the oily component to remain on the skin even if it is wiped with a towel or rinsed with water after being applied to moistened skin, thereby making it possible to improve the absorption feeling when applied to dry skin, the moisturizing feeling after rinsing with water, the film-covering feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after application to the skin and then rinsing with water.

[0115] Examples of the cationic polymer include cationized cellulose, cationized starch, cationized guar gum, cationized tara gum, cationized locust bean gum, cationized fenugreek gum, cationized xanthan gum, diallyl dialkyl ammonium salt polymers, diallyl dialkyl ammonium salt / acrylamide copolymers, diallyl dialkyl ammonium salt / acrylamide / acrylic acid copolymers, trichloroethylene imidazoline / vinyl pyrrolidone copolymers, hydroxyethyl cellulose / dimethyl diallyl ammonium chloride copolymers, vinyl pyrrolidone / quaternized dimethylaminoethyl methacrylate copolymers, polyvinyl pyrrolidone / alkylaminoacrylate copolymers, polyvinyl pyrrolidone / alkylaminoacrylate / vinyl caprolactam copolymers, vinyl pyrrolidone / methacrylamide propyl trimethylammonium chloride copolymers. Polymers, alkyl acrylamide / acrylate / alkylaminoalkyl acrylamide / polyethylene glycol methacrylate copolymers, polymethacryloylethyl dimethyl betaine, ethyl [(methacryloyloxy)ethyl] dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer, polymethacryloyloxyethyl trimethyl ammonium chloride, quaternized dimethylaminoethyl methacrylate / dialkyl acrylamide / polyethylene glycol dimethacrylate copolymer, adipic acid / dimethylaminohydroxypropyl ethylenetriamine copolymer (Sandoz, USA, CARTARETIN), and cationic polymers described in Japanese Patent Publication No. 53-139734 and Japanese Patent Publication No. 60-36407.

[0116] Among these, the oily component is likely to remain on the skin even if wiped with a towel or rinsed with water after application to moistened skin, and the absorption feeling when applied to the skin after wiping, the moisturizing feeling after rinsing with water, the film feeling and protection feeling when applied to the moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after application and rinsing with water are improved. Preferred are those containing vinyl pyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, diallyl dialkyl quaternary ammonium salt / acrylamide copolymer, diallyl dialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer, quaternized dimethylaminoethyl methacrylate / dialkyl acrylamide / polyethylene glycol dimethacrylate copolymer, cationized guar gum, cationized cellulose, ethyl [(methacryloyloxy)ethyl] dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer, polymethyl methacrylate One or more selected from acryloyloxyethyltrimethylammonium chloride, more preferably one or more selected from diallyldialkyl quaternary ammonium salt / acrylamide copolymer, quaternized dimethylaminoethyl methacrylate / dialkylacrylamide / polyethylene glycol dimethacrylate copolymer, ethyl [(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer, and polymethacryloyloxyethyltrimethylammonium chloride, further preferably one or more selected from ethyl [(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer, and polymethacryloyloxyethyltrimethylammonium chloride, and further more preferably one ethyl [(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer.

[0117] Regarding component (G), one or more than one component (G) may be used. The more the component (G) is used, the better, from the viewpoint that after applying to moistened skin, the oily component is likely to remain on the skin even if wiped with a towel or rinsed with water, and the moisturizing feeling after applying to dried skin and then rinsing with water, the film-like feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss after applying to the skin and then rinsing with water can be improved. On the other hand, the smaller the component (G) is used, the better, from the viewpoint of improving the absorption feeling when applied to dried skin, the non-greasy feeling when applied to moistened skin, and the non-sticky feeling after applying to moistened skin and then rinsing with water. Therefore, from the perspective of improving the moisturizing feeling after applying to the skin after wiping dry and then washing with water, the film feeling and protection feeling when applying to the moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after applying to the skin and then washing with water, and from the perspective of improving the absorption feeling when applying to the skin after wiping dry, the non-greasy feeling when applying to the skin moistened with water, and the non-sticky feeling after applying to the moistened skin and then washing with water, its content is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, and further preferably 0.02% by mass or more in the total composition, and preferably 1% by mass or less, more preferably 0.5% by mass or less, further preferably 0.2% by mass or less, and further more preferably 0.15% by mass or less. In addition, the content of component (G) in the total composition is preferably 0.001-1% by mass, more preferably 0.01-0.5% by mass, further preferably 0.02-0.2% by mass, and further more preferably 0.02-0.15% by mass.

[0118] The oil-in-water emulsion composition of the present invention may further contain (H) tocopherol and its derivatives, which can improve the affinity between the oily components in the oil-in-water emulsion composition and the skin through the synergistic effect with the oily components including components (A), (B) and (D), thereby improving the absorption and adsorption to the skin. Therefore, after being applied to moistened skin, the oily components are likely to remain on the skin even if wiped with a towel or rinsed with water, and the absorption feeling when applied to dried skin, the moisturizing feeling after washing with water, the film-covering feeling and protective feeling when applied to moistened skin, the moisturizing feeling on the next morning, and the skin gloss feeling after being applied to the skin and then rinsed with water can be improved.

[0119] Here, tocopherol is a water-insoluble component, including natural vitamin E (i.e., a mixture of d-α-tocopherol, d-β-tocopherol, d-γ-tocopherol, and d-δ-tocopherol), β-tocopherol, γ-tocopherol or δ-tocopherol and a mixture thereof. In addition, tocopherol derivatives are precursors of tocopherol, especially esters of tocopherol, such as tocopheryl acetate, tocopheryl nicotinate, tocopheryl succinate, tocopheryl linoleate, tocopheryl oleate, etc.

[0120] Among these, from the viewpoint that the synergistic effect with the oily component comprising components (A), (B) and (D) improves the affinity between the oily component in the water-in-oil emulsion composition and the skin, and the absorption into the skin can be improved, so that after application to moistened skin, the oily component is likely to remain on the skin even after wiping with a towel or rinsing with water, and the absorption when applied to dry skin, the moisturizing feeling after rinsing with water, the film-like feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss after application to the skin and then rinsing with water are improved, the component having a hydroxyl group in the tocopherol molecular skeleton and the hydroxyl group is not modified is preferred to the ester body in which the hydroxyl group in the tocopherol molecular skeleton is modified. In addition, from the viewpoint that the synergistic effect with the oily component comprising components (A), (B) and (D) improves the affinity between the oily component in the water-in-oil emulsion composition and the skin, and the absorption feeling into the skin can be improved. Therefore, after being applied to moistened skin, even if wiped with a towel or rinsed with water, the oily component is still likely to remain on the skin, and from the viewpoint of improving the absorption feeling when applied to dry skin, the moisturizing feeling after rinsing with water, the film-covering feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after application to the skin and then rinsing with water, it is preferred to contain one or more selected from natural vitamin E and d-δ-tocopherol.

[0121] Regarding component (H), one or more than one component may be used. From the following viewpoints: namely, by utilizing the synergistic effect with the oily component including components (A), (B) and (D), the affinity between the oily component in the water-in-oil emulsion composition and the skin becomes good, and the absorption feeling to the skin can be improved. Therefore, after applying to moistened skin, even if wiped with a towel or rinsed with water, the oily component is still likely to remain on the skin, and the absorption feeling when applied to dry skin, the moisturizing feeling after washing with water, the film-covering feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after applying to the skin and then rinsing with water are improved. In addition, from the perspective of preventing the stability of the water-in-oil emulsion composition from being damaged due to excessive content, the absorption feeling after applying to the skin after wiping, the ease of application and spreading when applied to the moistened skin, and the non-sticky feeling after applying to the moistened skin and then rinsing with water, its content is preferably 0.01% by mass or more, more preferably 0.04% by mass or more, further preferably 0.05% by mass or more, and further more preferably 0.08% by mass or more in the total composition, and preferably 1% by mass or less, more preferably 0.5% by mass or less, further preferably 0.3% by mass or less, and further more preferably 0.2% by mass or less. In addition, the content of component (H) in the total composition is preferably 0.01 to 1% by mass, more preferably 0.04 to 0.5% by mass, further preferably 0.05 to 0.3% by mass, and further more preferably 0.08 to 0.2% by mass.

[0122] In the present invention, from the viewpoint of improving the absorption and adsorption of the oil-in-water emulsion composition to the skin, making it easy for the oily component to remain on the skin even after wiping with a towel or rinsing with water after application to wet skin, improving the absorption feeling when applied to dry skin, the moisturizing feeling after rinsing with water, the film feeling and protection feeling when applied to wet skin, the moisturizing feeling the next morning, and the skin gloss feeling after application to the skin and then rinsing with water, it is preferred to contain component (G) and component (H).

[0123] The oil-in-water emulsion composition of the present invention may contain, in addition to the above-mentioned ingredients, ingredients commonly used in cosmetics, for example: oil ingredients other than ingredients (A), (B) and (D); surfactants other than ingredients (C) and (F); water-soluble polymers other than ingredient (G); antioxidants, fragrances, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers, refreshing agents, colorants, etc.

[0124] However, for the following purposes: namely, maintaining the stability of the composition, improving the affinity of the oil-in-water emulsion composition with the skin to enhance absorption and adsorption to the skin, and making it easy for the oily component to remain on the skin even after wiping with a towel or rinsing with water after application to moistened skin, and making the absorption feeling when applied to dry skin, the moisturizing feeling after rinsing with water, the film-like feeling and protective feeling when applied to moistened skin, the moisturizing feeling the next morning, and the skin gloss feeling after application to the skin and then rinsing with water good, the content of the anionic surfactant in the total composition is preferably 0.5% by mass or less, more preferably 0.1% by mass or less, and even more preferably substantially free of the anionic surfactant.

[0125] The oil-in-water emulsion composition of the present invention can be produced by a conventional method.

[0126] The oil-in-water emulsion composition of the present invention can be used as an oil-in-water emulsion cosmetic, and can be used as, for example, the following skin cosmetics: color cosmetics such as primer, foundation, concealer, rouge, eye shadow, mascara, eyeliner, eyebrow pencil, topcoat, lipstick, etc.; anti-ultraviolet cosmetics such as sunscreen lotion and sunscreen cream; skin care cosmetics such as skin care lotion, skin care cream, BB cream, beauty essence, etc. Among them, skin care cosmetics are preferred, skin care lotion and skin care cream are more preferred, and skin care cream is more preferred.

[0127] The water-in-oil emulsion composition of the present invention is absorbed by the skin when applied to the skin after wiping, so that the absorption feeling can be maintained and the moisturizing feeling can be maintained even after rinsing with water. When applied to the skin moistened with water, there is no need to spend the time required to wipe the moistened skin with a towel in advance, and it is easy to apply and spread on the moistened skin, and it can be applied without wasting time, and there is no greasy feeling when applying. Even if it is wiped with a towel, the water-in-oil emulsion composition will still remain on the skin, so a film-covered feeling and a protective feeling can be obtained. After being applied to the skin moistened with water, even after rinsing with water, the oily components of the water-in-oil emulsion composition still remain on the skin, so that the skin gloss can be obtained, and a good feeling of use without stickiness can be obtained. In addition, the stability is also excellent.

[0128] The oil-in-water emulsion composition of the present invention can be used by applying it to the skin moistened with water. Alternatively, it can be used by rinsing it with water after applying it to the skin.

[0129] The oil-in-water emulsion composition of the present invention can be used not only by applying it to the skin after drying, but also by applying it to the skin wetted with water. In addition, it can also be used by washing it off in a shower or the like after applying it to the skin wetted with water.

[0130] The oil-in-water emulsion composition of the present invention can be easily applied to the skin moistened with water after bathing and spread all over the body, and can remain on the skin even if the water is wiped off with a towel afterwards.

[0131] Furthermore, even when the skin is rinsed off with water after application, the oily component in the oil-in-water emulsion composition of the present invention can still remain on the skin.

[0132] In either case, the oily component in the oil-in-water emulsion composition of the present invention remains on the skin, so the effect of the moisturizing component can be particularly fully obtained.

[0133] In particular, if applied to moistened skin, the following effects can be obtained: (1) There is no need to wipe the moistened skin with a towel in advance, and the application is easy to spread on the skin, so the skin care can be easily applied, so it does not take time; (2) There is no greasy feeling when applied; (3) When bathing, the skin that loses the moisturizing components of the stratum corneum (intercellular lipids of the stratum corneum such as ceramide and NMF) during bathing will quickly begin to dry after bathing, but since it is applied immediately to the moistened skin after bathing, the skin can be prevented from drying. Therefore, in terms of the method of use, the method of applying to moistened skin is preferred over the method of applying to dried skin. On the other hand, although it is also possible to rinse with water after applying to moistened skin, it is preferred to not rinse with water after applying to moistened skin than to rinse with water because this allows the non-oily components in the oil-in-water emulsion composition to remain on the skin.

[0134] In relation to the above-mentioned embodiment, the present invention further discloses the following composition and the like.

[0135] <1> An oil-in-water emulsion composition comprising the following components (A), (B), (C), (D) and (E):

[0136] (A) Hydrocarbon oils that are liquid at 25°C;

[0137] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C;

[0138] (C) one or more selected from cationic surfactants and amphoteric surfactants: 0.1 to 5% by mass;

[0139] (D) one or more selected from ceramides, hydrocarbon oils that are pasty at 25°C, and ester oils that are pasty at 25°C: 2 to 20% by mass; and

[0140] (E) water;

[0141] The total content (A)+(B) of components (A) and (B) is 1 to 30% by mass, and the mass ratio (B) / ((A)+(B)) of component (B) to the total amount of components (A) and (B) is 0.05 to 0.9.

[0142] <2> The oil-in-water emulsion composition as described in <1> above, wherein component (A) preferably contains one or more selected from squalane, liquid paraffins, liquid isoparaffins, and α-olefin oligomers, more preferably contains one or more selected from liquid paraffins, liquid isoparaffins, and α-olefin oligomers, and further preferably contains liquid paraffin.

[0143] <3> The oil-in-water emulsion composition as described in <1> or <2> above, wherein the content of component (A) in the total composition is preferably 0.1% by mass or more, more preferably 1% by mass or more, further preferably 2% by mass or more, further more preferably 4% by mass or more, and is preferably 20% by mass or less, more preferably 10% by mass or less, further preferably 7% by mass or less, further more preferably 6.5% by mass or less, further more preferably 6% by mass or less.

[0144] <4> The oil-in-water emulsion composition according to any one of <1> to <3> above, wherein component (B) preferably contains a higher fatty acid, and more preferably contains at least one selected from oleic acid and isostearic acid.

[0145] <5> The oil-in-water emulsion composition according to any one of <1> to <4> above, wherein component (B) preferably contains a higher alcohol, and more preferably contains at least one selected from isostearyl alcohol and oleyl alcohol.

[0146] <6> An oil-in-water emulsion composition as described in any one of <1> to <5> above, wherein component (B) preferably contains an ester oil, more preferably contains one or more selected from monoester oil, diester oil, and triester oil, further preferably contains a diester oil, and further more preferably contains an acylamino acid diester.

[0147] <7> The oil-in-water emulsion composition according to any one of <1> to <6>, wherein the component (B) preferably contains an acylamino acid diester.

[0148] <8> An oil-in-water emulsion composition as described in any one of <1> to <7> above, wherein component (B) preferably contains one or more selected from N-lauroyl-L-glutamate di(phytosteryl·2-octyldodecanol) ester, neopentyl glycol dicaprate, isononyl isononanoate, and tri(caprylic acid·capric acid)glyceryl ester, and more preferably contains N-lauroyl-L-glutamate di(phytosteryl·2-octyldodecanol) ester.

[0149] <9> The oil-in-water emulsion composition as described in any one of <1> to <8> above, wherein the content of component (B) in the total composition is preferably 0.5% by mass or more, more preferably 1% by mass or more, further preferably 1.5% by mass or more, further more preferably 2% by mass or more, and is preferably 10% by mass or less, more preferably 8% by mass or less, further preferably 6% by mass or less, further more preferably 4% by mass or less.

[0150] <10> The oil-in-water emulsion composition as described in any one of <1> to <9> above, wherein the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.1 or more, more preferably 0.45 or more, further preferably 1.1 or more, and is preferably 10 or less, more preferably 7 or less, further preferably 3 or less.

[0151] <11> An oil-in-water emulsion composition as described in any one of <1> to <10> above, wherein the total content of components (A) and (B) in the total composition (A) + (B) is preferably 1% by mass or more, more preferably 2% by mass or more, further preferably 3% by mass or more, further more preferably 5% by mass or more, and is preferably 30% by mass or less, more preferably 20% by mass or less, further preferably 15% by mass or less, further more preferably 10% by mass or less.

[0152] <12> The oil-in-water emulsion composition as described in any one of the above <1> to <11>, wherein the mass ratio (B) / ((A)+(B)) of component (B) to the total amount of components (A) and (B) is preferably 0.1 or more, more preferably 0.15 or more, further preferably 0.3 or more, further more preferably 0.35 or more, and is preferably 0.8 or less, more preferably 0.75 or less, further preferably 0.7 or less, further more preferably 0.5 or less.

[0153] <13> The oil-in-water emulsion composition according to any one of <1> to <12>, wherein component (C) is a cationic surfactant, preferably a quaternary ammonium salt cationic surfactant, more preferably a quaternary ammonium salt cationic surfactant represented by the following general formula (1),

[0154]

[0155] In formula (1),

[0156] R 1 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms;

[0157] R2 represents an alkyl group having 1 to 4 carbon atoms;

[0158] R 3 With R 4 Each independently represents an alkyl group having 1 to 4 carbon atoms, or a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms;

[0159] AN - Indicates that the salt forms an anion.

[0160] <14> An oil-in-water emulsion composition as described in any one of <1> to <12> above, wherein component (C) is an amphoteric surfactant, preferably containing one or more selected from amino acid amphoteric surfactants, sulfobetaine surfactants, amide betaine surfactants, and imidazoline betaine surfactants, more preferably containing one or more selected from amino acid amphoteric surfactants, sulfobetaine surfactants, and amide betaine surfactants, further preferably containing one or more selected from amino acid amphoteric surfactants and sulfobetaine surfactants, and even more preferably containing an amino acid surfactant.

[0161] <15> The oil-in-water emulsion composition according to any one of <1> to <13>, wherein the component (C) is preferably a cationic surfactant.

[0162] <16> An oil-in-water emulsion composition as described in any one of <1> to <15> above, wherein the content of component (C) in the total composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.3% by mass or more, further more preferably 0.5% by mass or more, and is preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, further more preferably 1% by mass or less.

[0163] <17> An oil-in-water emulsion composition as described in any one of <1> to <13> and <15> above, wherein component (C) is a cationic surfactant and its content in the total composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.3% by mass or more, further more preferably 0.5% by mass or more, and is preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, further more preferably 1% by mass or less.

[0164] <18> An oil-in-water emulsion composition as described in any one of <1> to <17> above, wherein the mass ratio of component (B) to component (C), (B) / (C), is preferably 0.1 or more, more preferably 1 or more, further preferably 2.8 or more, and is preferably 20 or less, more preferably 6.8 or less, further preferably 5 or less.

[0165] <19> An oil-in-water emulsion composition as described in any one of <1> to <18> above, wherein component (D) is a hydrocarbon oil in a paste state at 25°C and an ester oil in a paste state at 25°C, and its viscosity is preferably 130 or more, more preferably 150 or more, and further preferably 170 or more, and is preferably 400 or less, more preferably 350 or less, further preferably 300 or less, and further more preferably 250 or less.

[0166] <20> The oil-in-water emulsion composition according to any one of <1> to <18>, wherein component (D) is a ceramide, preferably a compound selected from the group consisting of compounds represented by the following general formula (2) and compounds represented by the following general formula (3), more preferably a compound represented by the general formula (2), more preferably N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanoic acid amide,

[0167]

[0168] In the formula, R 1b represents a hydrocarbon group having 10 to 26 carbon atoms, R 2b represents a hydrocarbon group having 9 to 25 carbon atoms, and X represents -(CH2) n -, wherein n represents an integer from 2 to 6,

[0169]

[0170] In the formula, R 11 With R 12 are the same or different and represent a hydrocarbon group having 1 to 40 carbon atoms and having or not having a hydroxyl group; R 13 represents an alkylene group having 1 to 6 carbon atoms or a single bond; R 14 represents a hydrogen atom, an alkoxy group having 1 to 12 carbon atoms, or a 2,3-dihydroxypropoxy group; however, when R 13 When it is a single bond, R 14 A hydrogen atom.

[0171] <21> The oil-in-water emulsion composition according to any one of <1> to <19>, wherein component (D) is a pasty hydrocarbon oil, preferably vaseline or a hydrocarbon oil.

[0172] <22> An oil-in-water emulsion composition as described in any one of <1> to <19> above, wherein component (D) is a paste-like ester oil, preferably shea butter, cholesterol derivatives, phytosterol derivatives, dipentaerythritol fatty acid esters, triglycerides, lanolin, soft lanolin fatty acid, lanosterol derivatives, lanolin fatty acid esters, dimer linoleic acid esters, diglyceryl adipate mixed fatty acid esters, and acylamino acid esters.

[0173] <23> The oil-in-water emulsion composition as described in any one of <1> to <22> above, wherein component (D) preferably contains one or more selected from dimer linoleic acid esters, acyl amino acid esters, vaseline, and ceramides, more preferably contains one or more selected from vaseline and ceramides, further preferably contains ceramides, and among ceramides, it is further more preferred to contain N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanoamide.

[0174] <24> The oil-in-water emulsion composition as described in any one of <1> to <23> above, wherein component (D) preferably contains both of the following: one or more selected from hydrocarbon oils that are pasty at 25°C and ester oils that are pasty at 25°C, and one or more selected from ceramides, more preferably contains both of the following: one or more selected from hydrocarbon oils that are pasty at 25°C, and one or more selected from ceramides, further preferably contains both of the following: vaseline and one or more selected from ceramides, and further more preferably contains both of the following: vaseline and N-(hexadecyloxyhydroxypropyl)-N-hydroxyethyl hexadecanoic acid amide.

[0175] <25> The oil-in-water emulsion composition as described in any one of <1> to <24> above, wherein the ceramide contained as component (D) in the total composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 1% by mass or more, further more preferably 2% by mass or more, and is preferably 20% by mass or less, more preferably 10% by mass or less, further preferably 8% by mass or less, further more preferably 6% by mass or less, and further preferably 4% by mass or less.

[0176] <26> The oil-in-water emulsion composition as described in any one of <1> to <25> above, wherein the content of component (D) in the total composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, further preferably 0.5% by mass or more, further more preferably 1% by mass or more, further more preferably 2% by mass or more, and particularly preferably 3% by mass or more, and is preferably 30% by mass or less, more preferably 20% by mass or less, further preferably 15% by mass or less, further more preferably 12% by mass or less, particularly preferably 10% by mass or less, and further particularly preferably 7% by mass or less.

[0177] <27> An oil-in-water emulsion composition as described in any one of <1> to <26> above, wherein the mass ratio (C) / (D) of component (C) to component (D) is preferably 0.05 or more, more preferably 0.1 or more, further preferably 0.14 or more, and is preferably 1 or less, more preferably 0.23 or less, further preferably 0.18 or less.

[0178] <28> The oil-in-water emulsion composition according to any one of <1> to <27>, wherein the water content of component (E) in the total composition is preferably 30 to 90% by mass, more preferably 35 to 70% by mass, and even more preferably 40 to 60% by mass.

[0179] <29> An oil-in-water emulsion composition comprising the following components (A), (B), (C), (D) and (E):

[0180] (A) Hydrocarbon oils that are liquid at 25°C;

[0181] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C;

[0182] (C) cationic surfactant: 0.1 to 5% by mass;

[0183] (D) ceramides: 1 to 20% by mass; and

[0184] (E) Water.

[0185] <30> The oil-in-water emulsion composition as described in any one of <1> to <29> above, further comprising (F) a nonionic surfactant with an HLB of 13 or more, wherein the content of the nonionic surfactant is preferably less than 0.1% by mass, more preferably less than 0.05% by mass, and more preferably substantially free of the nonionic surfactant in the total composition.

[0186] <31> The oil-in-water emulsion composition according to <30> above, wherein component (F) preferably contains one or more selected from polyoxyethylene sorbitan fatty acid esters and polyoxyethylene hydrogenated castor oil, and more preferably contains polyoxyethylene sorbitan fatty acid esters.

[0187] <32> An oil-in-water emulsion composition as described in any one of <1> to <31> above, further comprising a nonionic surfactant having an HLB of less than 13, wherein the content of the nonionic surfactant is preferably 3% by mass or less, more preferably 2% by mass or less, further preferably 1% by mass or less, further more preferably 0.5% by mass or less, and further more preferably substantially free of the nonionic surfactant in the total composition.

[0188] <33> The oil-in-water emulsion composition as described in <32> above, wherein the nonionic surfactant having an HLB of less than 13 is preferably a nonionic surfactant having an HLB of less than 12, more preferably a nonionic surfactant having an HLB of less than 10, and even more preferably a nonionic surfactant having an HLB of less than 8.

[0189] <34> The oil-in-water emulsion composition as described in <32> or <33> above, wherein the nonionic surfactant having an HLB of less than 13 preferably contains one or more selected from polyether-modified silicone, glycerol fatty acid ester, and sorbitan fatty acid ester, and more preferably contains glycerol fatty acid ester.

[0190] <35> The oil-in-water emulsion composition according to any one of <1> to <34>, preferably further comprising (G) a cationic polymer.

[0191] <36> The oil-in-water emulsion composition as described in <35> above, wherein component (G) preferably contains one or more selected from vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, diallyldialkyl quaternary ammonium salt / acrylamide copolymer, diallyldialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer, quaternized dimethylaminoethyl methacrylate / dialkyl acrylamide / polyethylene glycol dimethacrylate copolymer, cationized guar gum, cationized cellulose, ethyl [(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer, and polymethacryloyloxyethyltrimethylammonium chloride, and more preferably contains It is preferably a copolymer of ethyl [(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate and polymethacryloyloxyethyltrimethylammonium chloride, and it is more preferably a copolymer of ethyl [(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate and polymethacryloyloxyethyltrimethylammonium chloride, and it is even more preferably a copolymer of ethyl [(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate.

[0192] <37> An oil-in-water emulsion composition as described in <35> or <36> above, wherein the content of component (G) in the total composition is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, further preferably 0.02% by mass or more, and is preferably 1% by mass or less, more preferably 0.5% by mass or less, further preferably 0.2% by mass or less, further more preferably 0.15% by mass or less.

[0193] <38> The oil-in-water emulsion composition according to any one of <1> to <37>, preferably further comprising (H) tocopherol and a derivative thereof.

[0194] <39> The oil-in-water emulsion composition according to <38>, wherein the component (H) preferably contains one or more selected from natural vitamin E and d-δ-tocopherol.

[0195] <40> An oil-in-water emulsion composition as described in <38> or <39> above, wherein the content of component (H) in the total composition is preferably 0.01% by mass or more, more preferably 0.04% by mass or more, further preferably 0.05% by mass or more, further more preferably 0.08% by mass or more, and is preferably 1% by mass or less, more preferably 0.5% by mass or less, further preferably 0.3% by mass or less, further more preferably 0.2% by mass or less.

[0196] <41> The oil-in-water emulsion composition according to any one of <35> to <40>, which preferably contains a component (G) and a component (H).

[0197] <42> The oil-in-water emulsion composition according to any one of <1> to <41>, wherein the content of the anionic surfactant in the total composition is preferably 0.5% by mass or less, more preferably 0.1% by mass or less, and more preferably substantially no anionic surfactant is contained.

[0198] <43> The oil-in-water emulsion composition as described in any one of <1> to <42> above, wherein the oil-in-water emulsion composition is preferably an oil-in-water emulsion cosmetic, more preferably a skin care cosmetic, a skin care lotion, or a skin care cream, and more preferably a skin care cream.

[0199] <44> The oil-in-water emulsion composition according to any one of <1> to <43>, which is used by applying to skin moistened with water.

[0200] <45> The oil-in-water emulsion composition according to any one of <1> to <43>, which is used in a manner of rinsing with water after being applied to the skin.

[0201] <46> The oil-in-water emulsion composition according to any one of <1> to <43>, which is used after being applied to moistened skin without being rinsed off with water.

[0202] <47> An oil-in-water emulsion composition comprising the following components (A), (B), (C), (D) and (E):

[0203] (A) Hydrocarbon oils that are liquid at 25°C;

[0204] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25° C., wherein the components contain acylamino acid ester;

[0205] (C) one or more selected from cationic surfactants and amphoteric surfactants: 0.1 to 5% by mass;

[0206] (D) one or more selected from ceramides, hydrocarbon oils that are pasty at 25°C, and ester oils that are pasty at 25°C; and

[0207] (E) water;

[0208] wherein the total content of components (A) and (B) (A) + (B) is 1 to 30% by mass;

[0209] The mass ratio (B) / ((A)+(B)) of the component (B) to the total amount of the components (A) and (B) is 0.05 to 0.9.

[0210] <48> An oil-in-water emulsion composition comprising the following components (A), (B), (C), (D) and (E):

[0211] (A) Hydrocarbon oils that are liquid at 25°C;

[0212] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25° C., wherein the components contain acylamino acid ester;

[0213] (C) cationic surfactant: 0.1 to 5% by mass;

[0214] (D) ceramides; and

[0215] (E) Water.

[0216] <49> An oil-in-water emulsion composition comprising the following components (A), (B), (C), (D) and (E):

[0217] (A) Hydrocarbon oils that are liquid at 25°C;

[0218] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C;

[0219] (C) one or more selected from cationic surfactants and amphoteric surfactants: 0.1 to 5% by mass;

[0220] (D) one or more selected from ceramides, hydrocarbon oils that are pasty at 25°C, and ester oils that are pasty at 25°C: 2 to 20% by mass; and

[0221] (E) water;

[0222] The total content of components (A) and (B) (A) + (B) is 1 to 30% by mass, and the mass ratio of component (B) to the total amount of components (A) and (B) (B) / ((A) + (B)) is 0.05 to 0.9.

[0223] The oil-in-water emulsion composition is used in a skin care method of applying the composition to wet skin or a skin care method of applying the composition to the skin and then rinsing it with water.

[0224] <50> An oil-in-water emulsion composition comprising the following components (A), (B), (C), (D) and (E):

[0225] (A) Hydrocarbon oils that are liquid at 25°C;

[0226] (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C;

[0227] (C) cationic surfactant: 0.1 to 5% by mass;

[0228] (D) ceramides: 1 to 20% by mass; and

[0229] (E) Water,

[0230] The oil-in-water emulsion composition is used in a skin care method of applying the composition to wet skin or a skin care method of applying the composition to the skin and then rinsing it with water.

[0231] [Example]

[0232] [Examples 1 to 24, Comparative Examples 1 to 7]

[0233] The oil-in-water emulsion composition was prepared using the components shown in Tables 1 to 4, and the following evaluations were conducted: whether an emulsion (cream) could be prepared, stability after one week at room temperature, absorption feeling when applied to dry skin, moisturizing feeling after applying to dry skin and then washing with water, ease of application and spread when applied to wet skin, non-slippery feeling when applied to wet skin, film-covered feeling and protective feeling when applied to wet skin, moisturizing feeling the next morning when applied to wet skin, skin gloss when applied to wet skin and then rinsed with a shower, and non-stickiness when applied to wet skin and then rinsed with a shower, etc. The results are summarized in Tables 1 to 4.

[0234] In addition, in the table, when the prepared components are a mixture, the content thereof indicates the content of the raw material (mixture).

[0235] (Manufacturing method)

[0236] A polyol (glycerol, etc.) heated to 85°C, a small amount of water, and a cationic surfactant or an amphoteric surfactant are mixed to obtain a surfactant phase. Next, the oily component mixed and dissolved at 85°C is slowly added to the surfactant phase. Then, the remaining water-soluble components are slowly added, stirred and mixed to emulsify the phase. After sufficient stirring, the mixture is cooled to obtain an oil-in-water emulsion composition.

[0237] (Evaluation method)

[0238] (1) Whether it can prepare emulsions (creams):

[0239] 80 mL of each oil-in-water emulsion composition was placed in a 110 mL transparent glass container (standard bottle #11, Tokyo Glass Instrument Co., Ltd.), sealed, and allowed to stand at room temperature (25° C.) for 12 hours. The appearance after standing was visually observed and judged according to the following criteria.

[0240] ○: A uniform layer with no separation of aqueous or oily components. A creamy emulsion.

[0241] ×: The aqueous component or the oily component separated, and the overall creamy emulsion could not be maintained.

[0242] (2) Stability after one week at room temperature:

[0243] 80 mL of each oil-in-water emulsion composition was placed in a 110 mL transparent glass container (standard bottle #11, Tokyo Glass Instruments Co., Ltd.), sealed, and left to stand at room temperature (25° C.) for one week. The appearance after standing was visually observed and judged according to the following criteria.

[0244] ○: A uniform layer with no separation of aqueous or oily components. A creamy emulsion.

[0245] ×: The aqueous component or the oily component separated, and the overall creamy emulsion could not be maintained.

[0246] (3) Absorption sensation when applied to dry skin:

[0247] Five professional reviewers washed the forearm of one arm with Curel bubble bath (manufactured by Kao Corporation), rinsed it in the shower, and wiped it thoroughly with a towel. 0.5 g of each oil-in-water emulsion composition was applied to the palm of one hand (not wet) and the "absorption feeling" when applied from the palm to the other washed and dried forearm was evaluated according to the following criteria. The results are expressed as a total score of 5 digits.

[0248] 5 points: I feel that it absorbs very well into the skin.

[0249] 4 points: The skin absorbs well.

[0250] 3 points: The skin absorbs slightly better.

[0251] 2 points: Doesn't seem to absorb well into the skin.

[0252] 1 point: The absorption into the skin does not seem to be good.

[0253] (4) Moisturizing feeling after applying to dry skin and then washing with water:

[0254] Five professional reviewers used Curel bubble bath (manufactured by Kao Corporation) to wash the forearm of one arm, then rinsed it in the shower and wiped it thoroughly with a towel. Take 0.5g of each water-in-oil emulsion composition on the palm of one hand (not wet), and apply it on the other forearm that has been washed and dried. After about 30 minutes, the forearm that has been applied with the water-in-oil emulsion composition is rinsed with about 40°C shower water, and excess water is absorbed by pressing with a towel. The "moisturizing feeling" after showering is compared with the moisturizing feeling before showering, and evaluated according to the following criteria. The results are expressed as a total score of 5 digits.

[0255] 5 points: The moisturizing feeling is no different from before rinsing in the shower.

[0256] 4 points: The moisturizing feeling is almost the same as before rinsing in the shower.

[0257] 3 points: Although the moisturizing feeling is slightly less than before the shower, it is still moisturizing.

[0258] 2 points: The moisturizing feeling is less than before the shower, and only a slight moisturizing feeling remains.

[0259] 1 point: No moisturizing feeling after rinsing in the shower.

[0260] (5) Ease of application when applied to wet skin:

[0261] Five professional reviewers used Curel bubble bath (manufactured by Kao Corporation) to wash the forearm of one arm at night and rinsed it in the shower. Take 0.5g of each water-in-oil emulsion composition on the slightly wet palm of one hand, and apply it on the other forearm that is slightly wet after rinsing in the shower. After about 1 minute, use a towel to press to absorb excess water. The "ease of application and extension" when applying the water-in-oil emulsion composition to slightly wet skin using the palm of the hand was evaluated according to the following criteria. The results are expressed as a total score of 5 digits.

[0262] 5 points: Very easy to apply and spread.

[0263] 4 points: Easy to apply and spread.

[0264] 3 points: Slightly easy to spread.

[0265] 2 points: Not easy to spread.

[0266] 1 point: Not easy to spread.

[0267] (6) No greasy feeling when applied to moistened skin:

[0268] In the same manner as in (5), the "non-slippery feeling" when the oil-in-water emulsion composition was applied to slightly wet skin from the palm of the hand was evaluated according to the following criteria. The results were expressed as a total score of 5 digits.

[0269] 5 points: Not greasy.

[0270] 4 points: Almost not greasy.

[0271] 3 points: Not too greasy.

[0272] 2 points: slightly greasy.

[0273] 1 point: Smooth.

[0274] (7) The film-like feeling and protective feeling when applied to moistened skin:

[0275] In the same manner as (5), each oil-in-water emulsion composition was spread on a slightly wet forearm, and after about 1 minute, excess water was absorbed by pressing with a towel, and then after about 2 minutes, the professional panelists evaluated the skin's "feeling of being covered and protected" according to the following criteria. The results were expressed as a total score of 5 digits.

[0276] 5 points: The skin feels extremely protected and covered by a film.

[0277] 4 points: The skin feels as if it is covered and protected by a film.

[0278] 3 points: The skin slightly feels as if it is covered with a film and protected.

[0279] 2 points: The skin slightly feels covered and protected by a film.

[0280] 1 point: The skin does not feel covered and protected by a film.

[0281] (8) Moisturizing feeling the next morning when applied to moisturized skin:

[0282] In the same manner as (5), each oil-in-water emulsion composition was applied and spread on a slightly wet forearm. After about 1 minute, excess moisture was absorbed by pressing with a towel. The next morning, the moisturizing feeling of the skin was compared with that of the unapplied area and evaluated according to the following criteria. The results were expressed as a total score of 5 digits.

[0283] 5 points: The area is much moister than the unapplied area.

[0284] 4 points: The area is moister than the unapplied area.

[0285] 3 points: Slightly moister than the unapplied area.

[0286] 2 points: Slightly moister than the unapplied area.

[0287] 1 point: Not moist at all, just like the unapplied area.

[0288] (9) Skin radiance after applying to wet skin and then rinsing in the shower:

[0289] Five professional reviewers used Curel bubble bath (manufactured by Kao Corporation) to wash the forearm of one arm and rinse it in the shower. 0.5 g of each water-in-oil emulsion composition was taken on the slightly wet palm of one hand, and spread on the other forearm that was slightly wet after the shower. After about 30 seconds, rinse with shower water at about 40°C, and use a towel to absorb excess water by pressing. Then, the glossiness of the arm applied with the water-in-oil emulsion composition was evaluated according to the following criteria. The results are expressed as a total score of 5 digits.

[0290] 5 points: Very glossy.

[0291] 4 points: Glossy.

[0292] 3 points: Slightly glossy.

[0293] 2 points: Not very shiny.

[0294] 1 point: No glossiness.

[0295] (10) No stickiness when applied to wet skin and then rinsed in the shower:

[0296] In the same manner as in (9), after rinsing with a shower, the arm to which the oil-in-water emulsion composition had been applied was evaluated for the absence of stickiness according to the following criteria. The results were expressed as a total score of 5 digits.

[0297] 5 points: No stickiness was felt.

[0298] 4 points: Almost no stickiness was felt.

[0299] 3 points: Not too sticky.

[0300] 2 points: Slightly sticky feeling.

[0301] 1 point: Sticky feeling was felt.

[0302] [Table 1]

[0303]

[0304] [Table 2]

[0305]

[0306] [Table 3]

[0307]

[0308] [Table 4]

[0309]

[0310] ※Comparative Example 7 showed separation, so no other evaluation was performed.

[0311] *1: Squalane: Squalane manufactured by Kishimoto Special Liver Oil Co., Ltd.

[0312] *2: Liquid paraffin: manufactured by Sonneborn, LLC, Kaydol.

[0313] *3: N-lauroyl-L-glutamic acid di(phytosteryl / 2-octyldodecanol) ester: manufactured by Ajinomoto Co., Ltd., ELDEW PS-203.

[0314] *4: Neopentyl glycol dicaprate: ESTEMOL N-01 manufactured by Nissin Oillio Group Co., Ltd.

[0315] *5: Isononyl isononanoate: SALACOS 99 manufactured by Nissin Oillio Group Co., Ltd.

[0316] *6: Caprylic / capric triglyceride: manufactured by Kao Corporation, COCONAD MT.

[0317] *7: Distearyl dimethyl ammonium chloride: manufactured by Evonik Operations GmbH, VARISOFT TA100.

[0318] *8: Behenyltrimethylammonium chloride: manufactured by NOF Corporation, cationic VB-800E (a mixture of 80% behenyltrimethylammonium chloride and 20% ethanol).

[0319] *9: Sodium N-stearoyl-N-methyltaurate: manufactured by Nippon Surfactant Industries, Ltd., NIKKOL SMT.

[0320] *10: Polyoxyethylene sorbitan monostearate: manufactured by Kao Corporation, RHEODOL TW-S120V.

[0321] *11: Glyceryl behenate: manufactured by Sun Chemical Co., Ltd., SUNSOFT No. 8100-CK.

[0322] *12: Sorbitan monostearate: RHEODOL SP-S10V manufactured by Kao Corporation.

[0323] *13: Vaseline: Made by Sonneborn, LLC, SUPER WHITE PROTOPET.

[0324] *14: N-(Hexadecyloxyhydroxypropyl)-N-hydroxyethyl hexadecylamide: manufactured by Kao Corporation, Soft Care Ceramide SL-E.

[0325] *15: Cholesteryl isostearate: manufactured by Kao Corporation, EXCEPARL IS-CE-A.

[0326] *16: N-lauroyl-L-glutamic acid di(phytosteryl / behenyl alcohol / 2-octyldodecanol) ester: manufactured by Ajinomoto Co., Ltd., ELDEW PS-306.

[0327] *17: Phytosteryl / Isostearyl / Cetyl / Stearyl / Behenyl Dilinoleate: Made by Nippon Seika Co., Ltd., PLANDOOL-H.

[0328] *18: Concentrated glycerin: Made by Kao Corporation, concentrated glycerin for cosmetics.

[0329] *19: Sorbitol: manufactured by Mitsubishi Corporation Life Sciences, Sorbitol W-70 (a mixture of 70% sorbitol and 30% water).

[0330] *20: Polyethylene glycol 600: manufactured by Sanyo Chemical Industries, Ltd., PEG-600(-G).

[0331] *21: d-δ-tocopherol: manufactured by Tama Biochemical Co., Ltd., D-δ-tocopherol.

[0332] *22: Ethyl [(methacryloyloxy)ethyl] dimethylammonium ethyl sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer: (a mixture of ethyl [(methacryloyloxy)ethyl] dimethylammonium ethyl sulfate·N,N-dimethylacrylamide 30% and polyethylene glycol 70%).

[0333] *23: Polymethacryloyloxyethyltrimethylammonium chloride: manufactured by BASF Personal Care and Nutrition GmbH, Cosmedia Ultragel 300 (a mixture of 97% polymethacryloyloxyethyltrimethylammonium chloride and 3% isopropyl alcohol).

[0334] *24: Xanthan gum: manufactured by Sumitomo Pharma Food & Chemical Co., Ltd., KELDENT.

[0335] *25: Stearyl alcohol: KALCOL 8098 manufactured by Kao Corporation.

[0336] *26: Cetyl alcohol: KALCOL 6098 manufactured by Kao Corporation.

[0337] *27: Cholesterol: manufactured by Nippon Seika Co., Ltd., cholesterol JSQI.

[0338] *28: Methyl polysiloxane: SILICONE KF-96A-10CS manufactured by Shin-Etsu Chemical Co., Ltd.

[0339] *29: Allantoin: Manufactured by Kawakken Seika Co., Ltd., S-allantoin.

[0340] *30: Eucalyptus leaf extract: manufactured by Xiangrong Industrial Co., Ltd., Eucalyptus leaf extract K.

[0341] *31: Phenoxyethanol: Made by Toho Chemical Industry Co., Ltd., HISOLVE EPH.

[0342] *32: Succinic acid: manufactured by Nippon Shokubai Co., Ltd., succinic acid.

[0343] *33: Arginine: manufactured by Ajinomoto Co., Ltd., L-arginine grade C.

[0344] *34: Lauryl hydroxysulfobetaine liquid: manufactured by Kao Corporation, AMPHITOL 20HD (a mixture of 30% by mass of lauryl hydroxysulfobetaine and 70% by mass of water).

[0345] The water-in-oil emulsion composition of the present invention has the following characteristics: when applied to the skin, it is fully adsorbed and absorbed by the skin, and will not be removed even if it is wiped with water or a towel afterwards. In particular, the oily component effectively remains on the skin. Here, for some embodiments and comparative examples, the amount of oily components remaining on the skin after being applied to moistened skin and wiped with a towel was measured using ceramide as an example. The residual rate of the oily component (ceramide) remaining on the skin after being applied to moistened skin and wiped with a towel is related to the skin's film-covering feeling and protective feeling, and the moisturizing feeling the next morning. The water-in-oil emulsion composition of the present invention has a high residual rate of the oily component (ceramide), so it can make the skin's film-covering feeling and protective feeling, and the moisturizing feeling the next morning good.

[0346] [Test example]

[0347] The residual rates of ceramides when applied to the skin were measured for the oil-in-water emulsion compositions of Examples 3 to 6 and Comparative Example 2. The results are shown in Table 5.

[0348] (Test method)

[0349] (1) Wash the test site on the inner side of the forearm with Curel Bubble Body Wash (manufactured by Kao Corporation), rinse with warm water, and wipe with a towel.

[0350] (2) 82 μL of the oil-in-water emulsion composition was taken with a micropipette at the test site (5×6 cm) on the cleaned inner side of the forearm, 153 μL of tap water was added, and the mixture was evenly applied.

[0351] (3) After leaving it for 1 minute, press it twice with a paper towel and wipe it dry with a towel.

[0352] (4) D-SQUAME tape (Clinical and Derm, 2.3 cm diameter circle) was used to sample the same part five times in the depth direction. Samples were also collected five times from other parts other than the sampled part, for a total of four samples (see Figure 1 ).

[0353] (5) Put all 20 pieces of tape collected into a sample bottle, add acetone / diethyl ether / ethanol = 3 / 3 / 4, 5 mL, vortex and extract, and then dry. Add 5 mL of methanol and seal the cap, and use an ultrasonic cleaner (~50°C) to extract for 1.5 hours. Quantify N-(hexadecyloxyhydroxypropyl)-N-hydroxyethyl hexadecanoic acid amide (component (D1)) in the extract using HPLC (UV, ODS column) and methanol / acetonitrile = 7 / 3.

[0354] (6) Based on the analysis value, the ceramide residual rate was calculated according to the following formula from the amount of N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanoic acid amide (ingredient (D1)) attached to the applied area after wiping it with a towel (remaining without being wiped off with a paper towel), the amount formulated in the water-in-oil emulsion composition (mass %), and the amount applied.

[0355] In addition, the recovery area (1.15×1.15×3.14×4cm 2 ) relative to the application area (5×6cm 2 In addition, when performing the calculation, it is assumed that the preparation is evenly applied to the application site.

[0356] In addition, the residual ratios of (1) to (6) were determined for each oil-in-water emulsion composition, and each of the steps was performed twice, and the average value of the two times was used as the measured value.

[0357] Residual ceramide rate (%) = (total amount of component (D1) recovered from 20 tapes) / (recovery area 1.15 × 1.15 × 3.14 cm 2 The content of the component (D1) in the oil-in-water emulsion composition applied at the place)×100.

[0358] [Table 5]

[0359] Example 3 Example 4 Example 5 Example 6 Comparative Example 2 Ceramide residual rate (%) 37 90 100 66 5

Claims

1. An oil-in-water emulsion composition, wherein: Contains the following ingredients (A), (B), (C), (D) and (E): (A) Hydrocarbon oils that are liquid at 25°C; (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C; (C) one or more selected from cationic surfactants and amphoteric surfactants: 0.1 to 5% by mass; (D) one or more selected from ceramides, hydrocarbon oils that are pasty at 25°C, and ester oils that are pasty at 25°C: 2 to 20% by mass; and (E) Water, The total content (A)+(B) of components (A) and (B) is 1 to 30% by mass, and the mass ratio (B) / ((A)+(B)) of component (B) to the total amount of components (A) and (B) is 0.05 to 0.

9.

2. The oil-in-water emulsion composition according to claim 1, wherein Component (B) contains an acylamino acid diester.

3. The oil-in-water emulsion composition according to claim 1 or 2, wherein Ingredient (C) is a cationic surfactant.

4. The oil-in-water emulsion composition according to any one of claims 1 to 3, wherein The total composition contains 1 mass % or more of ceramides as a component (D).

5. An oil-in-water emulsion composition, wherein: Contains the following ingredients (A), (B), (C), (D) and (E): (A) Hydrocarbon oils that are liquid at 25°C; (B) one or more components selected from higher fatty acids, higher alcohols, and ester oils that are liquid at 25°C; (C) cationic surfactant: 0.1 to 5% by mass; (D) ceramides: 1 to 20% by mass; and (E) Water.

6. The oil-in-water emulsion composition according to any one of claims 1 to 5, wherein The composition further contains less than 0.1 mass % of (F) a nonionic surfactant having an HLB of 13 or more.

7. The oil-in-water emulsion composition according to any one of claims 1 to 6, wherein It further contains (G) a cationic polymer.

8. The oil-in-water emulsion composition according to any one of claims 1 to 7, wherein The invention further contains (H) one or more kinds selected from tocopherol and derivatives thereof.

9. The oil-in-water emulsion composition according to any one of claims 1 to 8, wherein Use by applying to moistened skin.

10. The oil-in-water emulsion composition according to any one of claims 1 to 8, wherein Use it in a way that you can rinse it off with water after applying it on the skin.

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