Emulsion composition

Abstract

To provide an emulsion composition that captures unsaturated fatty acids, such as oleic acid, as sebum components, to improve skin conditions, and effectively prevents rough skin due to sebum.SOLUTION: The emulsion composition comprises the following components (A), (B), and (C): a polymer having a cellulose skeleton including substituents selected from a hydroxypropyl group, a hydroxybutyl group, and an amide group, the number of substituents being 2.4 or greater per glucose (A); a liquid dihydric alcohol (B); and one or more compounds selected from sphingosine, sphingosine salts, pseudo-sphingosines, salts of pseudo-sphingosines, anionic surfactants, and cationic surfactants (C).SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to an emulsifying composition. [Background technology]

[0002] Traditionally, unsaturated fatty acids, including oleic acid and palmitoleic acid, have been known to affect the skin, causing mild inflammation, rough skin texture, noticeable pores and other unevenness, and makeup breakdown. Various studies have been conducted to improve these effects of unsaturated fatty acids on the skin. For example, Patent Document 1 describes that an unsaturated fatty acid adsorbent consisting of oleic acid ester surfactant-coated hexagonal plate-shaped zinc oxide can suitably adsorb and immobilize unsaturated fatty acids contained in sebum, and can prevent makeup from smudging when incorporated into cosmetics. Patent Document 2 describes that a cosmetic composition containing silicone microparticles, comprising silicone elastomer spherical microparticles and a polyorganosilsesquioxane coating its surface, can suppress changes in the properties of makeup cosmetics, changes in color, shine, etc., caused by sebum. Patent Document 3 describes that a skin secretion inhibitory composition containing butcher's broom extract can improve skin symptoms associated with excessive sebum secretion.

[0003] On the other hand, hydroxypropyl cellulose has traditionally been used as a water-soluble thickener in pharmaceuticals, cosmetics, and other products. For example, Patent Document 4 describes an oil-in-water alcohol-type emulsion composition having (a) an alcohol phase containing hydroxypropyl cellulose and exhibiting a gel-like state, (b) an oil phase containing dextrin palmitate and exhibiting a gel-like state, and (c) an aqueous phase containing polyvinyl alcohol and carboxyvinyl polymer with a degree of saponification of 70-98 mol% and exhibiting a gel-like state, which is less irritating and highly stable when used on the skin. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2018-83766 [Patent Document 2] Japanese Patent Publication No. 2011-105662 [Patent Document 3] Japanese Patent Publication No. 2017-178858 [Patent Document 4] Japanese Patent Publication No. 2009-114180 [Overview of the project] [Problems that the invention aims to solve]

[0005] In conventional technologies, such as those described in Patent Documents 1 and 2, when sebum is adsorbed with powder, while there is a makeup-lasting effect due to the localized sebum-capturing ability on the skin surface where the powder is present, no improvement in the skin itself is obtained. Also, as described in Patent Document 3, when plant extracts are used, sebum secretion is suppressed, but the effect on the skin is not improved by capturing unsaturated fatty acids. [Means for solving the problem]

[0006] The inventors have discovered that highly substituted hydroxypropyl cellulose specifically captures unsaturated fatty acids, including oleic acid, which are components of sebum, from the outside, thereby improving skin condition. Furthermore, they have found that by using a combination of liquid dihydric alcohol and a specific compound, an emulsified composition with a high effect in suppressing skin roughness caused by sebum can be obtained.

[0007] The present invention comprises the following components (A), (B), and (C): (A) A polymer having a cellulose backbone, in which substituents selected from hydroxypropyl groups, hydroxybutyl groups, and amide groups are substituted at a rate of 2.4 or more per glucose unit. (B) Liquid dihydric alcohol, (C) One or more compounds selected from sphingosine, sphingosine salts, pseudosphingosine, pseudosphingosine salts, anionic surfactants, and cationic surfactants. This relates to an emulsified composition containing [a specific ingredient]. [Effects of the Invention]

[0008] The emulsifying composition of the present invention can improve skin conditions such as redness, unevenness, brightness, and smoothness (roughness of the skin surface), and when foundation or the like is applied, it adheres well, provides a uniform finish without unevenness, and the makeup lasts longer. [Modes for carrying out the invention]

[0009] Component (A) used in the present invention is a polymer having a cellulose backbone, in which substituents selected from hydroxypropyl groups, hydroxybutyl groups, and amide groups are substituted at a rate of 2.4 or more per glucose unit. Component (A) is a cellulose in which a substituent selected from a hydroxypropyl group, a hydroxybutyl group, and an amide group is substituted on the hydroxyl group at a rate of 2.4 or more per glucose unit (degree of substitution of 2.4 or more), with a degree of substitution of 3 or more, preferably 10 or less, and more preferably 5 or less. Here, the degree of substitution is the average number of substituted hydroxyl groups per glucose unit. If substituents such as hydroxypropyl groups also contain hydroxyl groups, these substituent hydroxyl groups are also etherified during the reaction, and the molar degree of substitution, which is the number of substituents per glucose unit, becomes greater than 3, for example, for a hydroxypropyl group. The degree of substitution can be determined by the Zeisel method [Analytical Chemistry, Vol. 51, No. 13, 2172 (1979), see "The Fifteenth Revised Japanese Pharmacopoeia (section on analytical methods for hydroxypropyl cellulose)"].

[0010] As component (A), hydroxypropyl cellulose is preferred from the viewpoint of gelling unsaturated fatty acids. Furthermore, it is preferable that the polymer of component (A) does not have substituents other than hydroxypropyl groups, hydroxybutyl groups, and amide groups.

[0011] Furthermore, from the viewpoint of gelling the unsaturated fatty acids, component (A) is preferably of an average molecular weight of 40,000 to 2,500,000, and more preferably of 100,000 to 2,500,000. Here, the average molecular weight is measured by GPC (Gel Permeation Chromatography).

[0012] Such polymers can be produced, for example, by adding propylene oxide to alkali cellulose activated by acceleration. For example, hydroxypropyl cellulose, which has a hydroxypropyl group substituent, is produced by performing an extremely complicated activation treatment called acceleration or mercerization, in which cellulose is mixed with a large amount of water and a large excess of alkali metal hydroxide such as sodium hydroxide in a slurry state to form alkali cellulose, and then reacting this alkali cellulose with propylene oxide.

[0013] Furthermore, as component (A), commercially available products such as HPC-SSL, HPC-SL, HPC-L, HPC-M, HPC-H, HPC-VH (all manufactured by Nippon Soda Co., Ltd.), KLUCEL MF Pharm, and KLUCEL HPC (manufactured by Ashland) can be used.

[0014] Component (A) can be used alone or in combination of two or more types. From the viewpoint of improving the ability to capture unsaturated fatty acids by gelling them, improving skin condition, improving the application and evenness of makeup when foundation is applied, and enhancing its longevity, it is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more in the total composition. Furthermore, from the viewpoint of usability that improves the application and evenness of makeup when foundation is applied, and enhances its longevity, it is preferably 6% by mass or less, more preferably 3% by mass or less, even more preferably 2% by mass or less, and even more preferably 1.8% by mass or less. In addition, the content of component (A) is preferably 0.1 to 6% by mass in the total composition, more preferably 0.2 to 3% by mass, even more preferably 0.3 to 2% by mass, and even more preferably 0.3 to 1.8% by mass. Also, 0.2 to 6% by mass is preferred.

[0015] In the case of component (B), a liquid dihydric alcohol is defined as one that is fluid at 25°C. Examples of liquid dihydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butylene glycol, 1,3-propanediol, 1,2-propanediol, and pentylene glycol. Of these, from the viewpoint of enhancing the scavenging effect of component (A) on unsaturated fatty acids, improving skin condition, and improving the application and evenness of makeup when foundation is applied, as well as enhancing its longevity, it is preferable to include at least one selected from propylene glycol, dipropylene glycol, 1,3-butylene glycol, propanediol, and pentylene glycol, and it is more preferable to include 1,3-butylene glycol or propanediol.

[0016] Component (B) can be used alone or in combination of two or more types. From the viewpoint of improving the dispersibility of component (A), enhancing the scavenging effect of unsaturated fatty acids, improving skin condition, and improving the application and evenness of makeup when foundation is applied, as well as enhancing its longevity, it is preferably 2% by mass or more, more preferably 3% by mass or more, and even more preferably 4.5% by mass or more in the total composition. From the viewpoint of usability, it is preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less. Furthermore, the content of component (B) is preferably 2 to 15% by mass in the total composition, more preferably 3 to 12% by mass, and even more preferably 4.5 to 10% by mass.

[0017] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.05 or higher, more preferably 0.08 or higher, and even more preferably 0.12 or higher, from the viewpoint of gelling unsaturated fatty acids, enhancing the scavenging effect of unsaturated fatty acids, improving skin condition, and improving the application and evenness of makeup when foundation is applied, as well as enhancing its longevity. Furthermore, from the viewpoint of improving makeup evenness and makeup application, it is preferably 0.6 or lower, more preferably 0.45 or lower, and even more preferably 0.35 or lower. In addition, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.05 to 0.6, more preferably 0.08 to 0.45, and even more preferably 0.12 to 0.35.

[0018] Component (C) is one or more compounds selected from sphingosine, salts of sphingosine, pseudosphingosine, salts of pseudosphingosine, anionic surfactants, and cationic surfactants. Among the compounds of component (C), sphingosine and pseudosphingosine include sphingosine compounds represented by the following general formula (1).

[0019] [ka]

[0020] [In formula (1), R 1represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group or an amino group; Y represents a methylene group, a methine group or an oxygen atom; X 1 X 2 and X 3 each independently represents a hydrogen atom, a hydroxyl group or an acetoxy group, X 4 represents a hydrogen atom, an acetyl group or a glyceryl group, or forms an oxo group together with an adjacent oxygen atom (however, when Y is a methine group, either one of X 1 and X 2 is a hydrogen atom and the other does not exist. When X 4 forms an oxo group, X 3 does not exist.); R 2 and R 3 each independently represents a hydrogen atom, a hydroxyl group, a hydroxymethyl group or an acetoxymethyl group; a R's each independently represent a hydrogen atom or an amidino group, or a linear or branched saturated or unsaturated hydrocarbon group having 1 to 8 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group and an acetoxy group; a represents a number of 2 or 3; The dashed line indicates that it may be an unsaturated bond.〕

[0021] In formula (1), R 1 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group or an amino group, and a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 7 to 22 carbon atoms which may be substituted with a hydroxyl group is preferred. Among these, linear or branched alkyl groups having 10 to 20 carbon atoms, and linear or branched alkyl groups having 10 to 20 carbon atoms with a hydroxyl group at the Y-terminus are preferred, and in the case of branched alkyl groups, those with methyl branching are preferred. Specific examples of preferred groups include tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, 1-hydroxytridecyl group, 1-hydroxypentadecyl group, isohexadecyl group, and isostearyl group.

[0022] Y represents either a methylene group (CH2), a methine group (CH), or an oxygen atom. X 1 , X 2 , and X 3 Each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group, X 4 This indicates a substituent that forms an oxo group together with a hydrogen atom, an acetyl group, a glyceryl group, and an adjacent oxygen atom. X 1 , X 2 , and X 3 X 1 , X 2 , and X 3 A combination in which 0 to 1 of the atoms are hydroxyl groups and the remainder are hydrogen atoms is preferred. 4 A hydrogen atom is preferred as the element. Furthermore, when Y is a methine group, X 1 and X 2 Only one of them is a hydrogen atom, and the other does not exist. Also, X 4 When X forms an oxo group, 3 It does not exist.

[0023] R 2 and R 3 Each of these independently represents a hydrogen atom, a hydroxyl group, a hydroxymethyl group, or an acetoxymethyl group. 3 Among these, the hydrogen atom is particularly preferred.

[0024] Also, a represents the number 2 or 3, and when a is 2, R is R 4 and R 5This shows that when a is 3, R is R 4 , R 5 and R 6 This indicates.

[0025] R 4 , R 5 and R 6 Each of these represents a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms, which may independently be a hydrogen atom or an amidino group, or which may have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. A linear or branched hydroxyalkoxy group having 1 to 7 carbon atoms is preferred as the hydroxyalkoxy group that can be substituted for this hydrocarbon group. Furthermore, a linear or branched alkoxy group having 1 to 7 carbon atoms is preferred as the alkoxy group. R 4 , R 5 and R 6 Examples include hydrogen atoms; amidino groups; linear or branched alkyl groups such as methyl groups, ethyl groups, propyl groups, 2-ethylhexyl groups, and isopropyl groups; alkenyl groups such as vinyl groups and allyl groups; and hydrocarbon groups with a total of 1 to 8 carbon atoms substituted with 1 to 6 atoms selected from hydroxyl groups, hydroxyalkoxy groups, and alkoxy groups, such as hydroxymethyl groups, 2-hydroxyethyl groups, 1,1-dimethyl-2-hydroxyethyl groups, 2-hydroxypropyl groups, 2,3-dihydroxypropyl groups, 2-hydroxy-3-methoxypropyl groups, 2,3,4,5,6-pentahydroxyhexyl groups, 1,1-bis(hydroxymethyl)ethyl groups, 2-(2-hydroxyethoxy)ethyl groups, 2-methoxyethyl groups, 1-methyl-2-hydroxyethyl groups, 3-hydroxypropyl groups, 3-methoxypropyl groups, and 1,1-bis(hydroxymethyl)-2-hydroxyethyl groups.

[0026] Among these, R 4 , R 5 and R 6Preferably, the alkyl group may be substituted with a hydrogen atom or 1 to 3 alkyl groups selected from hydroxyl groups and hydroxyalkoxy groups, such as a methyl group, 2-hydroxyethyl group, 1,1-dimethyl-2-hydroxyethyl group, 1,1-bis(hydroxymethyl)ethyl group, or 2-(2-hydroxyethoxy)ethyl group.

[0027] The sphingosines represented by general formula (1) are preferably naturally occurring sphingosines represented by the following general formula (2) or synthetic products having the same structure, and their derivatives (hereinafter also referred to as natural sphingosines), or pseudo-sphingosines represented by the following general formula (3) (hereinafter also referred to as pseudo-sphingosines).

[0028] [ka]

[0029] [In formula (2), R 7 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms, which may be substituted with a hydroxyl group; Y1 represents a methylene group or a methine group; X 5 , X 6 and X 7 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 8 This represents a hydrogen atom, or together with an adjacent oxygen atom, forms an oxo group (however, when Y1 is a methine group, X 5 and X 6 Either one represents a hydrogen atom, and the other does not exist. X 8 When X forms an oxo group, 7 It does not exist. R 8 This indicates a hydroxymethyl group or an acetoxymethyl group; Each of the a R1 groups independently represents a hydrogen atom or an amidino group, or a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 4 carbon atoms, which may have substituents selected from hydroxyl groups, hydroxyalkoxy groups, alkoxy groups, and acetoxy groups; a indicates a number of 2 or 3; The dashed lines indicate that unsaturated bonds may be present.

[0030] [ka]

[0031] [In formula (3), R 9 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms, which may be substituted with a hydroxyl group; X 9 This represents a hydrogen atom, an acetyl group, or a glyceryl group; Each of the a R2 groups independently represents a hydrogen atom or an amidino group, or a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy groups; 'a' represents the number 2 or 3.

[0032] Here, we will explain the natural type of sphingosine represented by general formula (2). In formula (2), R 7 Preferably, the group is a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms, and more preferably a linear saturated or unsaturated hydrocarbon group having 13 to 15 carbon atoms. Furthermore, 2 is preferred for a in formula (2), and R1 in formula (2) is preferably a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms, independently of each other.

[0033] Examples of naturally occurring sphingosine represented by general formula (2) include sphingosine (natural sphingosine), dihydrosphingosine, phytosphingosine, sphingadienine, dehydrosphingosine, dehydrophytosphingosine, and their N-alkyl derivatives (e.g., N-methyl derivatives). These sphingosines may be the optically active form of the natural type (D(+)), the optically active form of the unnatural type (L(-)), or a mixture of the natural and unnatural types. The relative stereochemistry of the above compounds may be that of the natural type, or any other unnatural type, or a mixture thereof. Among these naturally occurring sphingosines, those selected from the group of compounds (α) represented by the following formula are preferred, with PHYTOSPHINGOSINE (INCI name; 8th Edition) being more preferred.

[0034] [ka]

[0035] These can be either natural extracts or synthetic compounds, and commercially available products can be used. Examples of commercially available natural sphingosine include D-Sphingosine (4-Sphingenine) (manufactured by SIGMA-ALDRICH), DS-phytosphingosine (manufactured by DOOSAN), and phytosphingosine (manufactured by Cosmo Farm).

[0036] Next, we will explain the pseudo-sphingosines represented by general formula (3). In formula (3), R 9 As for the group, an isobranched alkyl group having 14 to 20 carbon atoms is preferred, and an isostearyl group is particularly preferred. As for the isostearyl group, the most preferred is the isostearyl group obtained using isostearyl alcohol, a by-product of dimer acid production using fatty acids derived from animal and vegetable oils, as the raw material. Also, in equation (3), when a is 2, R2 is R a10 and R a11 This shows that when a is 3, R2 is R a10 , R a11 and R a12 This indicates.

[0037] R a10 , R a11 and R a12 Examples of substituents include hydrogen atoms; amidino groups; linear or branched alkyl groups such as methyl, ethyl, propyl, 2-ethylhexyl, and isopropyl groups; alkenyl groups such as vinyl and allyl groups; and alkyl groups with a total of 1 to 8 carbon atoms having substituents selected from hydroxyl groups, hydroxyalkoxy groups, and alkoxy groups, such as hydroxymethyl, 2-hydroxyethyl, 1,1-dimethyl-2-hydroxyethyl, 2-hydroxypropyl, 2,3-dihydroxypropyl, 2-hydroxy-3-methoxypropyl, 2,3,4,5,6-pentahydroxyhexyl, 1,1-bis(hydroxymethyl)ethyl, 2-(2-hydroxyethoxy)ethyl, 2-methoxyethyl, 1-methyl-2-hydroxyethyl, 3-hydroxypropyl, 3-methoxypropyl, and 1,1-bis(hydroxymethyl)-2-hydroxyethyl groups. The number of substituents is preferably 1 to 6, more preferably 1 to 3. R a10 and R a11 As for combinations, R a10 and R a11 A combination (secondary amine) in which one of the groups is a hydrogen atom and the other is a 2-hydroxyethyl group, a 1,1-dimethyl-2-hydroxyethyl group, a 1,1-bis(hydroxymethyl)ethyl group, or a 2-(2-hydroxyethoxy)ethyl group is preferred.

[0038] As a pseudo-sphingosine, R in equation (3) 9 The isostearyl group is X 9 is a hydrogen atom, and R a10 is a hydrogen atom, and R a11However, it is preferable that the alkyl group is substituted with 1 to 3 groups selected from hydroxyl groups and hydroxyalkoxy groups, such as 2-hydroxyethyl group, 1,1-dimethyl-2-hydroxyethyl group, 1,1-bis(hydroxymethyl)ethyl group, or 2-(2-hydroxyethoxy)ethyl group. Suitable specific examples of pseudo-sphingosine include the following pseudo-sphingosine(i) to (iv). Among these, pseudo-sphingosine(ii) is preferred, and 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol is more preferred. Furthermore, the pseudo-sphingosine can be either a commercially available product or one synthesized according to conventional methods.

[0039] [ka]

[0040] Examples of salts of these sphingosines and pseudosphingosines include acidic amino acid salts such as glutamic acid and aspartic acid; basic amino acid salts such as arginine; inorganic acid salts such as phosphoric acid and hydrochloric acid; monocarboxylate salts such as acetic acid; dicarboxylate salts such as succinic acid; and oxycarboxylate salts such as citric acid, lactic acid, and malic acid. Among these, succinate, lactate, arginine salt, and glutamate are preferred as salts of sphingosine and pseudosphingosine, with glutamate being more preferred. Of the above-mentioned sphingosine, sphingosine salts, pseudosphingosine, and pseudosphingosine salts, one may be used alone or two or more may be used in combination. Furthermore, among sphingosine, sphingosine salts, pseudosphingosine, and pseudosphingosine salts, pseudosphingosine and pseudosphingosine salts are preferred from the viewpoint of storage stability, etc.

[0041] Furthermore, among the compounds of component (C), examples of cationic surfactants include quaternary ammonium salt type cationic surfactants and amine salt type cationic surfactants, but quaternary ammonium salt type cationic surfactants are preferred. Examples of amine salt type cationic surfactants include alkylamine salts. Among such cationic surfactants, quaternary ammonium salt type cationic surfactants represented by the following general formula (7) are preferred.

[0042] [ka]

[0043] [In formula (7), R 31 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms. R 32 This represents an alkyl group having 1 to 4 carbon atoms. R 33 and R 34 Each of these 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. AN - This indicates a salt-forming anion.

[0044] In formula (7), R 31 , R 33 and R 34 The number of carbon atoms in the "linear, branched, or cyclic saturated or unsaturated hydrocarbon group" represented by is preferably 6 to 30, more preferably 8 to 24, even more preferably 12 to 22, and particularly preferably 16 to 20. Examples of the hydrocarbon groups mentioned above include alkyl groups, alkenyl groups, and aralkyl groups. Among these, alkyl groups and alkenyl groups are preferred, and alkyl groups are more preferred. The number of carbon atoms in the above alkyl group is, as described above, preferably 6 to 30, more preferably 8 to 24, still more preferably 12 to 22, and particularly preferably 16 to 20. The above alkyl group may be linear or branched. For example, octyl group, nonyl group, decyl group, undecyl group, 1-methyldecyl group, dodecyl group, 1-methylundecyl group, 1-ethyldecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, octadecyl group, behenyl group, etc. can be mentioned. The above alkenyl group may be linear or branched. For example, decenyl group, undecenyl group, dodecenyl group, tetradecenyl group, hexadecenyl group, etc. can be mentioned. Examples of the above aralkyl group include benzyl group, phenethyl group, etc.

[0045] R 32 、R 33 and R 34 The number of carbon atoms in the "alkyl group having 1 to 4 carbon atoms" represented by is preferably 1 or 2, and particularly preferably 1. Also, this alkyl group may be linear or branched. For example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, etc. can be mentioned.

[0046] R 33 and R 34 As the combination of R 33 and R 34 both being alkyl groups having 1 to 4 carbon atoms, a combination where one of R 33 and R 34 is an alkyl group having 1 to 4 carbon atoms and the remainder is a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms, and a combination where both R 33 and R 34 are both linear, branched or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms can be mentioned. Among these combinations, a combination where both R 33 and R 34 are both alkyl groups having 1 to 4 carbon atoms, and a combination where both R 33 and R 34A combination in which one of them is an alkyl group having 1 to 4 carbon atoms, and the remainder is a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms, is preferred. 33 and R 34 A combination in which one of the groups is an alkyl group having 1 to 4 carbon atoms, and the remainder is a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms, is more preferable.

[0047] Also, in equation (7), AN - This represents a salt-forming anion. Examples include halide ions (e.g., chloride ions, iodide ions), sulfate ions, phosphate ions, acetate ions, lactate ions, p-toluenesulfonate ions, perchlorate ions, monoalkylnitrate ions (e.g., methyl sulfate ions, ethyl sulfate ions), and so on, with halide ions being preferred.

[0048] More specifically, cationic surfactants include alkyltrimethylammonium 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. Of these, dialkyldimethylammonium salts are preferred.

[0049] Furthermore, among the compounds of component (C), the anionic surfactant is not limited as long as it is commonly used in cosmetics, for example, fatty acids with 12 to 24 carbon atoms or their salts, such as sodium laurate, potassium palmitate, and arginine stearate; alkyl sulfate esters with 12 to 24 carbon atoms or their salts, such as sodium lauryl sulfate and potassium lauryl sulfate; alkyl ether sulfate esters with 12 to 24 carbon atoms or their salts, such as polyoxyethylene lauryl sulfate triethanolamine; acyl sarcosine with 12 to 24 carbon atoms or its salts, such as sodium lauroyl sarcosinate; alkyl phosphates with 12 to 24 carbon atoms or their salts, such as sodium monostearyl phosphate; sodium polyoxyethylene oleyl ether phosphate, polyoxy Examples include polyoxyethylene alkyl ether phosphates with 12 to 24 carbon atoms, such as sodium ethylene stearyl ether phosphate, or salts thereof; dialkyl sulfosuccinates with 12 to 24 carbon atoms, such as sodium di-2-ethylhexyl sulfosuccinate, or salts thereof; N-alkylyl methyl taurates with 12 to 24 carbon atoms, such as sodium N-stearoyl-N-methyl taurate, or salts thereof; N-acyl glutamates with 12 to 24 carbon atoms, such as sodium dilauroyl glutamate, monosodium N-lauroyl glutamate, sodium N-stearoyl-L-glutamate, sodium N-stearoyl-L-glutamate arginine, sodium N-stearoyl glutamate, and sodium N-myristoyl-L-glutamate, or salts thereof.

[0050] Of these, from the viewpoint of ease of preparation of formulations, N-acyl glutamic acid having 12 to 24 carbon atoms or its salts, fatty acid salts having 12 to 24 carbon atoms, and polyoxyethylene alkyl ether phosphates having 12 to 24 carbon atoms are preferred, N-acyl glutamate having an acyl group having 12 to 24 carbon atoms is more preferred, N-acyl glutamate having 12 to 20 carbon atoms is even more preferred, and N-stearoyl-L-glutamate is even more preferred.

[0051] The compound of component (C) may be used alone or in combination of two or more, but it is preferable to use at least one or more selected from sphingosine, sphingosine salts, pseudosphingosine, and pseudosphingosine salts, from the viewpoint of storage stability and even application when foundation is applied over the coating film. In particular, it is more preferable to use at least one or more selected from phytosphingosine, phytosphingosine salts, pseudosphingosine(ii), and pseudosphingosine(ii) salts, and it is especially preferable to use at least one or more selected from phytosphingosine, phytosphingosine salts, 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol, and 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol salts. Furthermore, when using at least one or more selected from sphingosine, salts of sphingosine, pseudosphingosine, and salts of pseudosphingosine, a cationic surfactant may be further included.

[0052] Component (C) can be used alone or in combination of two or more types. From the viewpoint of storage stability, improving the application and evenness of makeup when foundation is applied, and enhancing durability, the content is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more in the total composition. From the viewpoint of maintaining the longevity of makeup when foundation is applied, the content is preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less, and even more preferably 0.6% by mass or less. Furthermore, the content of component (C) is preferably 0.05 to 5% by mass in the total composition, more preferably 0.1 to 3% by mass, even more preferably 0.2 to 1% by mass, and even more preferably 0.3 to 0.6% by mass.

[0053] In the present invention, the mass ratio (A) / (C) of component (A) to component (C) is preferably 0.1 or higher, more preferably 0.5 or higher, even more preferably 1 or higher, preferably 10 or lower, more preferably 8 or lower, and even more preferably 6 or lower, from the viewpoint of gelling unsaturated fatty acids, enhancing the scavenging effect of unsaturated fatty acids, improving skin condition, and improving the application and evenness of makeup, as well as its longevity, when foundation or the like is applied.

[0054] The emulsifying composition of the present invention may further contain (D) glycerin fatty acid ester, which can improve emulsification stability, the smooth and even application of makeup such as foundation, and its longevity. As for glycerin fatty acid esters, glycerin monofatty acid esters are preferred from the viewpoint of emulsification stability. Glycerin monofatty acid esters are preferably those having fatty acid residues with 10 to 24 carbon atoms, more preferably those having fatty acid residues with 16 to 24 carbon atoms, and particularly preferably those having fatty acid residues with 18 to 24 carbon atoms. Furthermore, the "fatty acids" constituting the glycerin monofatty acid ester may be saturated fatty acids or unsaturated fatty acids, and may be straight-chain fatty acids or branched fatty acids. Glycerin monofatty acid esters are preferably those having saturated fatty acid residues, and more preferably those having straight-chain saturated fatty acid residues. Examples of glycerin monofatty acid esters include glycerin monolaurate, glycerin monomyristate, glycerin monopalmitate, glycerin monostearate, glycerin monobehenate, glycerin monooleate, glycerin monoisostearate, and glycerin monolinoleate. Among these, glycerin monostearate and glycerin monobehenate are preferred.

[0055] Component (D) can be used alone or in combination of two or more types. From the viewpoint of emulsification stability and improvement of makeup application and evenness when foundation is applied, the content is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. Furthermore, the content of component (D) is preferably 0.1 to 5% by mass, more preferably 0.3 to 3% by mass, and even more preferably 0.5 to 2% by mass.

[0056] The emulsifying composition of the present invention may further contain (E) a higher alcohol, which can improve emulsification stability and the smooth application and evenness of makeup when foundation or the like is applied. The higher alcohol is preferably a monohydric alcohol having 10 to 24 carbon atoms, more preferably a monohydric alcohol having 12 to 22 carbon atoms, and even more preferably a monohydric alcohol having 14 to 22 carbon atoms. The higher alcohol may be linear or branched, and may be saturated or unsaturated, but linear saturated or unsaturated alcohols are preferred. Examples of higher alcohols include lauryl alcohol, myristyl alcohol, cetanol, stearyl alcohol, behenyl alcohol, and oleyl alcohol. Among these, cetanol, stearyl alcohol, and behenyl alcohol are preferred, with cetanol and behenyl alcohol being more preferred.

[0057] Component (E) can be used alone or in combination of two or more types. From the viewpoint of emulsification stability and improvement of makeup application and evenness when foundation is applied, the content is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. Furthermore, the content of component (E) is preferably 0.1 to 5% by mass, more preferably 0.3 to 3% by mass, and even more preferably 0.5 to 2% by mass.

[0058] The emulsified composition of the present invention may further contain (F) ceramides, which can improve skin condition (such as moisture content). Examples of ceramides include those represented by general formula (4).

[0059] [ka]

[0060] [In formula (4), R 11 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group, or an amino group, or a hydrogen atom; Z represents a methylene group, a methine group, or an oxygen atom; X 11 , X 12 and X 13 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group. X 14 This represents a hydrogen atom, an acetyl group, or a glyceryl group, or together with an adjacent oxygen atom to form an oxo group (however, when Z is a methine group, X 11 and X 12 One of them is a hydrogen atom, and the other does not exist. 14 When X forms an oxo group, 13 It does not exist. R 12 and R 13 Each of these independently represents a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.), or an acetoxymethyl group; R 14 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 60 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group, or an amino group, and which may have an ether bond, an ester bond, or an amide bond in its main chain; R 15This represents a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 30 carbon atoms, which may represent a hydrogen atom or have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group (Note that R 11 When Z is a hydrogen atom and Z is an oxygen atom, R 15 It is preferably a hydrocarbon group having a total of 10 to 30 carbon atoms, which may have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group, and R 11 When R is a hydrocarbon group, 15 Preferably, it is a hydrocarbon group having a total of 1 to 8 carbon atoms, which may represent a hydrogen atom or have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. The dashed lines indicate that unsaturated bonds may also be present.

[0061] In formula (4), R 11 The "linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms, which may be substituted with a hydroxyl group, carbonyl group, or amino group" shown is preferably a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 7 to 22 carbon atoms, which may be substituted with a hydroxyl group. Z represents a methylene group, a methine group, or an oxygen atom.

[0062] X 11 , X 12 and X 13 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group. 11 , X 12 and X 13 X 11 , X 12 and X 13 A combination in which 0 to 1 of the atoms are hydroxyl groups and the remainder are hydrogen atoms is preferred. When Z is a methine group, X 11 and X 12 Only one of them is a hydrogen atom, and the other does not exist. Also, X 14 Hydrogen atoms and glyceryl groups are preferred as these elements. R12 and R 13 Each independently represents a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.), or an acetoxymethyl group, and is preferred R 12 R is a hydrogen atom or a hydroxymethyl group, and is preferred. 13 It is a hydrogen atom.

[0063] R 14 R represents a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 60 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group, or an amino group, and may also have an ether bond, an ester bond, or an amide bond in its main chain. 14 Examples include a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 35 carbon atoms, which may be substituted with a hydroxyl group or an amino group, or a linear, branched, or cyclic saturated or unsaturated fatty acid having 8 to 22 carbon atoms, which may be substituted with a hydroxyl group, linked to the ω position of the hydrocarbon group by an ester bond or amide bond. Preferred fatty acids for bonding are isostearic acid, 12-hydroxystearic acid, or linoleic acid.

[0064] R 15 This represents a hydrogen atom or a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 30 carbon atoms, which may have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. R 11 When Z is a hydrogen atom and Z is an oxygen atom, R 15 A hydrocarbon group having a total of 10 to 30 carbon atoms is preferred, which may have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. Also, R 11 When R is a hydrocarbon group, 15Preferably, the hydrocarbon group has 1 to 8 carbon atoms and may have a hydrogen atom or a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. More preferably, the hydrocarbon group has 1 to 8 carbon atoms and may have a hydrogen atom or be substituted with 1 to 3 substituents selected from a hydroxyl group, a hydroxyalkoxy group, and an alkoxy group. Here, the hydroxyalkoxy group and the alkoxy group have 1 to 7 carbon atoms.

[0065] As ceramides, naturally derived ceramides represented by the following general formula (5), synthetic products having the same structure, and their derivatives (hereinafter also referred to as natural-type ceramides), or pseudo-type ceramides represented by the following general formula (6) (hereinafter also referred to as pseudo-type ceramides) are preferred. Among natural-type ceramides and pseudo-type ceramides, pseudo-type ceramides are preferred from the viewpoint of productivity, etc.

[0066] [ka]

[0067] [In formula (5), R 21 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms, which may be substituted with a hydroxyl group; Z1 represents a methylene group or a methine group; X 15 , X 16 , and X 17 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 18 It either represents a hydrogen atom or, together with an adjacent oxygen atom, forms an oxo group (however, when Z1 is a methine group, X 15 and X 16 One of them is a hydrogen atom, and the other does not exist. 18 When X forms an oxo group, 17 It does not exist. R 22This represents a hydroxyalkyl group (e.g., hydroxymethyl group, hydroxyethyl group, etc.) or an acetoxymethyl group; R 23 This represents either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 24 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group), which may be substituted with a hydroxyl group, or a linear or branched saturated or unsaturated fatty acid having 8 to 22 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be esterified to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); The dashed lines indicate that unsaturated bonds may also be present.

[0068] [ka]

[0069] [In formula (6), R 25 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms, which may be substituted with a hydroxyl group, or a hydrogen atom; X 19 represents a hydrogen atom, an acetyl group, or a glyceryl group; R 26 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 22 carbon atoms (the hydrocarbon group is preferably an alkyl group), which may be substituted with a hydroxyl group or an amino group, or a linear or branched saturated or unsaturated fatty acid having 8 to 22 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, esterified to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); R 27 This represents a hydrogen atom, or a hydrocarbon group having a total of 1 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group), which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group.

[0070] Here, we will explain natural ceramides represented by general formula (5). In formula (5), R 21 The number of carbon atoms in the hydrocarbon group represented by is 7 to 19, preferably 11 to 15, more preferably 13 to 15. Also, R 21 A linear alkyl group is preferred as the hydrocarbon group represented by . X 18 It either represents a hydrogen atom or, together with an adjacent oxygen atom, forms an oxo group. Also, R 24 Preferably, this is a linear alkyl group having 9 to 27 carbon atoms, which may be substituted with a hydroxyl group, or a group in which linoleic acid is ester-bonded to the ω-terminus of the alkyl group. 24 More preferably, the groups are tricosyl group, 1-hydroxypentadecyl group, 1-hydroxytricosyl group, heptadecyl group, 1-hydroxyundecyl group, nonacosyl group with linoleic acid ester-bonded to the ω position, and pentacosyl group.

[0071] Specific examples of naturally occurring ceramides include ceramides Type 1-7, in which sphingosine, dihydrosphingosine, phytosphingosine, or sphingadienine are amidated (for example, porcine and human ceramides described in Figure 2 of J. Lipid Res., 24:759 (1983) and Figure 4 of J. Lipid. Res., 35:2069 (1994)). Furthermore, these N-alkyl forms (e.g., N-methyl forms) are also included in natural ceramides. These ceramides may be the optically active form of the natural type (D(-)), the optically active form of the unnatural type (L(+)), or a mixture of the natural and unnatural types. The relative stereochemistry of the above compounds may be that of the natural type, or any other unnatural type, or a mixture thereof. Among natural ceramides, compounds of CERAMIDE1, CERAMIDE2, CERAMIDE3, CERAMIDE5, and CERAMIDE6II (all INCI, 8th Edition) and those represented by the following formula are particularly preferred.

[0072] [ka]

[0073] These can be either natural extracts or synthetic compounds, and commercially available products can be used. Examples of commercially available natural ceramides include Ceramide I, Ceramide II, Ceramide III, Ceramide IIIA, Ceramide IIIB, Ceramide IIIC, Ceramide VI (all manufactured by Cosmo Farm), Ceramide TIC-001 (manufactured by Takasago International Corporation), CERAMIDE II (manufactured by Quest International), DS-Ceramide VI, DS-CLA-Phytoceramide, C6-Phytoceramide, DS-ceramide Y3S (manufactured by Doosan), and CERAMIDE2 (manufactured by Sederma).

[0074] [ka]

[0075] Next, we will explain pseudo-ceramides represented by general formula (6). In formula (6), R 26 Preferred groups include heptyl group, 1-hydroxyheptyl group, nonyl group, tridecyl group, pentadecyl group, undecyl group with linoleic acid ester-bonded to the ω position, pentadecyl group with linoleic acid ester-bonded to the ω position, pentadecyl group with 12-hydroxystearic acid ester-bonded to the ω position, and undecyl group with methyl-branched isostearic acid amide-bonded to the ω position. Also, R 25 If R is a hydrogen atom, 27Preferably, the hydrocarbon group is a hydrocarbon group having 1 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group; more preferably, the hydrocarbon group is a hydrocarbon group having 10 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group; and particularly preferably, an alkyl group having 12 to 20 carbon atoms. R 25 However, if the hydroxyl group is substituted, R is a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms. 27 Preferably, the alkyl group has a total of 1 to 8 carbon atoms and may be substituted with a hydrogen atom, or a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group. R 27 In this compound, the hydroxyalkoxy group or alkoxy group is preferably one having 1 to 7 carbon atoms.

[0076] Among pseudo-ceramides, R in general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27 Those in which the group is a hydroxyethyl group; R in general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a nonyl group, R 27 Those in which the group is a hydroxyethyl group; R in general formula (6) 25 is a hexadecyl group, X 19 is a glyceryl group, R 26 is a tridecyl group, R 27 The one in which is a 3-methoxypropyl group; R in general formula (6) 25 X is a hydrogen atom. 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27 Those with a dodecyl group; R in general formula (6) 25 X is a hydrogen atom. 19 is a hydrogen atom, R 26 is a 1-hydroxyheptyl group, R 27Preferably, it is a dodecyl group. R in general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27 Those in which the group is a hydroxyethyl group; R in general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a nonyl group, R 27 Those in which the group is a hydroxyethyl group; R in general formula (6) 25 is a hexadecyl group, X 19 is a glyceryl group, R 26 is a tridecyl group, R 27 It is more preferable that it has a 3-methoxypropyl group. R in general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27 Those with a hydroxyethyl group (N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanamide) are particularly preferred. Pseudo-ceramides represented by general formula (6) are ceramide functional components that can supplement the function of ceramides and improve skin condition (such as moisture content).

[0077] [ka]

[0078] [ka]

[0079] Component (F) can be used in combination of one or more types. From the viewpoint of improving skin condition and improving the application and evenness of makeup when foundation is applied, the content is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, preferably 5% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less. Furthermore, the content of component (F) is preferably 0.01 to 5% by mass, more preferably 0.05 to 4% by mass, and even more preferably 0.1 to 3% by mass.

[0080] In the present invention, the water content is preferably 40% by mass or more, more preferably 50% by mass or more, more preferably 85% by mass or less, and more preferably 83% by mass or less, from the viewpoint of the dispersibility of component (A) and the skin-improving effect. Furthermore, the water content is preferably 40 to 85% by mass, and more preferably 50 to 83% by mass, from the total composition.

[0081] In addition to the above-mentioned components, the emulsified composition of the present invention may contain components commonly used in cosmetics, such as polyhydric alcohols other than those mentioned above, oily components other than those mentioned above, powders, polymer compounds other than those mentioned above, antioxidants, fragrances, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers, cooling agents, and the like.

[0082] The emulsified composition of the present invention can be manufactured according to conventional methods and may be a water-in-oil emulsion, an oil-in-water emulsion, or any other type. It can also be in the form of a liquid, emulsion, paste, cream, gel, solid, or other dosage form. Furthermore, the emulsifying composition of the present invention is preferably an α-type gel from the viewpoint of improving skin condition, improving makeup application and evenness when foundation is applied, improving durability, and storage stability. The α-type structure can be confirmed by X-ray structural analysis. The α-type structure is a hexagonal crystal system in which the lipophilic groups are oriented perpendicular to the hydrophilic base layer plane, and is characterized by the appearance of a sharp diffraction peak around the Bragg angle of 21-23°.

[0083] The emulsifying composition of the present invention is preferably used as an oil-in-water emulsion cosmetic, and can be used as a makeup cosmetic such as a makeup base, foundation, concealer, blush, eyeshadow, mascara, eyeliner, eyebrow product, overcoat, and lipstick; or as an ultraviolet protection cosmetic such as a sunscreen lotion and sunscreen cream. The cosmetic composition of the present invention can be used by applying it to the skin, preferably to a part of the body excluding the scalp, and more preferably to the face, body, hands, feet, etc. The cosmetic composition of the present invention can be suitably used as skin cosmetics such as lotions, emulsions, beauty creams, base cosmetics, sunscreens, packs, and massage cosmetics; and as topical pharmaceuticals such as creams containing various drugs. Among these, skin cosmetics are preferred from the viewpoint of gelling unsaturated fatty acids, enhancing the scavenging effect of unsaturated fatty acids, improving skin condition, and improving the application and evenness of makeup, as well as its longevity, when foundation is applied. Lotions, emulsions, beauty creams, and base cosmetics are more preferred, beauty creams, emulsions, and base cosmetics are even more preferred, and emulsions and base cosmetics are even more preferred. Note that skin cosmetics do not include cosmetics for cleansing purposes.

[0084] With regard to the embodiments described above, the present invention further discloses the following compositions.

[0085] <1> The following components (A), (B), and (C): (A) A polymer having a cellulose backbone, in which substituents selected from hydroxypropyl groups, hydroxybutyl groups, and amide groups are substituted at a rate of 2.4 or more per glucose unit. (B) Liquid dihydric alcohol, (C) One or more compounds selected from sphingosine, sphingosine salts, pseudosphingosine, pseudosphingosine salts, anionic surfactants, and cationic surfactants. An emulsified composition containing [a specific ingredient].

[0086] <2> Component (A) is a cellulose hydroxyl group that has been substituted with substituents selected from hydroxypropyl groups, hydroxybutyl groups, and amide groups at a rate of 2.4 or more per glucose unit (degree of substitution of 2.4 or more), wherein the degree of substitution is preferably 3 or more, preferably 10 or less, and more preferably 5 or less. <1> The emulsifying composition described. <3> The polymer of component (A) preferably does not have substituents other than hydroxypropyl groups, hydroxybutyl groups, and amide groups. <1> or <2> The emulsifying composition described. <4> The above is characterized in that component (A) is preferably hydroxypropyl cellulose. <1> ~ <3> The emulsified composition according to any one of the following. <5> Component (A) preferably has an average molecular weight of 40,000 to 2,500,000, and more preferably 100,000 to 2,500,000. <1> ~ <4> The emulsified composition according to any one of the following.

[0087] <6> The content of component (A) is preferably 0.1% by mass or more in the total composition, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, preferably 6% by mass or less, more preferably 3% by mass or less, even more preferably 2% by mass or less, and even more preferably 1.8% by mass or less. <1> ~ <5> The emulsified composition according to any one of the following. <7> The content of component (A) is preferably 0.1 to 6% by mass in the total composition. <1> ~ <6> The emulsified composition according to any one of the following. <8> The content of component (A) is preferably 0.2 to 6% by mass in the total composition. <1> ~ <6> The emulsified composition according to any one of the following.

[0088] <9> Component (B) preferably contains one or more selected from propylene glycol, dipropylene glycol, 1,3-butylene glycol, propanediol, and pentylene glycol, and more preferably contains 1,3-butylene glycol or propanediol. <1> ~ <8> The emulsified composition according to any one of the following. <10> The content of component (B) is preferably 2% by mass or more in the total composition, more preferably 3% by mass or more, even more preferably 4.5% by mass or more, preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less. <1> ~ <9> The emulsified composition according to any one of the following. <11> The mass ratio (A) / (B) of component (A) to component (B) is preferably 0.05 or more, more preferably 0.08 or more, even more preferably 0.12 or more, preferably 0.6 or less, more preferably 0.45 or less, and even more preferably 0.35 or less. <1> ~ <10> The emulsified composition according to any one of the following. <12> The mass ratio (A) / (B) of component (A) to component (B) is preferably 0.05 to 0.6. <1> ~ <11> The emulsified composition according to any one of the following.

[0089] <13> Component (C) is preferably the following general formula (1):

[0090] [ka]

[0091] [In formula (1), R 1 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group, or an amino group; Y represents a methylene group, a methine group, or an oxygen atom; X 1 , X 2 , and X 3 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group. X 4 This represents a hydrogen atom, an acetyl group, or a glyceryl group, or together with an adjacent oxygen atom to form an oxo group (however, when Y is a methine group, X 1 and X 2 One of them is a hydrogen atom, and the other does not exist. 4 When X forms an oxo group, 3 It does not exist. R 2 and R 3 Each of these independently represents a hydrogen atom, a hydroxyl group, a hydroxymethyl group, or an acetoxymethyl group; Each of the a R groups independently represents a hydrogen atom or an amidino group, or a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms, which may have substituents selected from hydroxyl groups, hydroxyalkoxy groups, alkoxy groups, and acetoxy groups; a indicates a number of 2 or 3; The dashed lines indicate that unsaturated bonds may also be present. Sphingosine groups represented by, Naturally occurring sphingosines represented by the following general formula (2) or synthetic compounds having the same structure, and their derivatives (hereinafter also referred to as natural sphingosines), or pseudo-sphingosines represented by the following general formula (3) (hereinafter also referred to as pseudo-sphingosines).

[0092] [ka]

[0093] [In formula (2), R 7 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms, which may be substituted with a hydroxyl group; Y1 represents a methylene group or a methine group; X 5 , X 6 and X 7 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 8 This represents a hydrogen atom, or together with an adjacent oxygen atom, forms an oxo group (however, when Y1 is a methine group, X 5 and X 6 Either one represents a hydrogen atom, and the other does not exist. X 8 When X forms an oxo group, 7 It does not exist. R 8This indicates a hydroxymethyl group or an acetoxymethyl group; Each of the a R1 groups independently represents a hydrogen atom or an amidino group, or a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 4 carbon atoms, which may have substituents selected from hydroxyl groups, hydroxyalkoxy groups, alkoxy groups, and acetoxy groups; a indicates a number of 2 or 3; The dashed lines indicate that unsaturated bonds may be present.

[0094] [ka]

[0095] [In formula (3), R 9 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms, which may be substituted with a hydroxyl group; X 9 This represents a hydrogen atom, an acetyl group, or a glyceryl group; Each of the a R2 groups independently represents a hydrogen atom or an amidino group, or a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy groups; 'a' represents the number 2 or 3. More preferable, the above <1> ~ <12> The emulsified composition according to any one of the following.

[0096] <14> Component (C) is preferably a cationic surfactant, specifically a quaternary ammonium salt type cationic surfactant represented by the following general formula (7).

[0097] [ka]

[0098] [In formula (7), R 31 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms. R 32 This represents an alkyl group having 1 to 4 carbon atoms. R 33 and R 34 Each of these 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. AN - This indicates a salt-forming anion. More preferably, dialkyldimethylammonium salts are even more preferred, the above <1> ~ <12> The emulsified composition according to any one of the following.

[0099] <15> Component (C) is preferably an anionic surfactant, more preferably N-acyl glutamic acid or a salt thereof having 12 to 24 carbon atoms, a fatty acid salt having 12 to 24 carbon atoms, a polyoxyethylene alkyl ether phosphate having 12 to 24 carbon atoms, even more preferably an N-acyl glutamate having an acyl group having 12 to 24 carbon atoms, even more preferably an N-acyl glutamate having 12 to 20 carbon atoms, and even more preferably an N-stearoyl-L-glutamate. <1> ~ <12> The emulsified composition according to any one of the following.

[0100] <16> Component (C) is preferably one or more selected from sphingosine, salts of sphingosine, pseudosphingosine, and salts of pseudosphingosine, more preferably at least one or more selected from phytosphingosine, salts of phytosphingosine, pseudo-sphingosine (ii), and salts of pseudo-sphingosine (ii), and even more preferably at least one or more selected from phytosphingosine, salts of phytosphingosine, 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol, and salts of 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol, the above <1> ~ <12> The emulsified composition according to any one of the following.

[0101] <17> The content of component (C) is preferably 0.05% by mass or more in the total composition, more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less, and even more preferably 0.6% by mass or less, as described above. <1> ~ <16> The emulsified composition according to any one of the following. <18> The mass ratio (A) / (C) of component (A) to component (C) is preferably 0.1 or more, more preferably 0.5 or more, even more preferably 1 or more, preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. <1> ~ <17> The emulsified composition according to any one of the following.

[0102] <19> Furthermore, the above contains (D) glycerin fatty acid ester. <1> ~ <18> The emulsified composition according to any one of the following. <20> Component (D) is preferably a glycerol monofatty acid ester, more preferably a glycerol monostearate ester or a glycerol monobehenate ester. <19> The emulsifying composition described. <21> The content of component (D) is preferably 0.1% by mass or more in the total composition, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. <19> or <20> The emulsifying composition described.

[0103] <22> Furthermore, (E) containing a higher alcohol, <1> ~ <21> The emulsified composition according to any one of the following. <23> Component (E) is preferably a monohydric alcohol having 10 to 24 carbon atoms, more preferably cetanol, stearyl alcohol, and behenyl alcohol, and even more preferably cetanol and behenyl alcohol. <22> The emulsifying composition described. <24> The content of component (E) is preferably 0.1% by mass or more in the total composition, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. <22> or <23> The emulsifying composition described.

[0104] <25> Furthermore, the above contains (F) ceramides. <1> ~ <24> The emulsified composition according to any one of the following. <26> Component (F) is preferably of general formula (4):

[0105] [ka]

[0106] [In formula (4), R 11 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group, or an amino group, or a hydrogen atom; Z represents a methylene group, a methine group, or an oxygen atom; X 11 , X 12 and X 13 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group. X 14 This represents a hydrogen atom, an acetyl group, or a glyceryl group, or together with an adjacent oxygen atom to form an oxo group (however, when Z is a methine group, X 11 and X 12 One of them is a hydrogen atom, and the other does not exist. 14 When X forms an oxo group, 13 It does not exist. R 12 and R 13 Each of these independently represents a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.), or an acetoxymethyl group; R 14This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 60 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group, or an amino group, and which may have an ether bond, an ester bond, or an amide bond in its main chain; R 15 This represents a linear or branched saturated or unsaturated hydrocarbon group having a total of 1 to 30 carbon atoms, which may represent a hydrogen atom or have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group (Note that R 11 When Z is a hydrogen atom and Z is an oxygen atom, R 15 It is preferably a hydrocarbon group having a total of 10 to 30 carbon atoms, which may have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group, and R 11 When R is a hydrocarbon group, 15 Preferably, it is a hydrocarbon group having a total of 1 to 8 carbon atoms, which may represent a hydrogen atom or have substituents selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. The dashed lines indicate that unsaturated bonds may also be present. It is represented by, Naturally derived ceramides represented by the following general formula (5), or synthetic compounds having the same structure and their derivatives (hereinafter also referred to as natural ceramides), or pseudo-ceramides represented by the following general formula (6) (hereinafter also referred to as pseudo-ceramides).

[0107] [ka]

[0108] [In formula (5), R 21 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms, which may be substituted with a hydroxyl group; Z1 represents a methylene group or a methine group; X 15 , X 16 , and X 17 Each of these independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 18 It either represents a hydrogen atom or, together with an adjacent oxygen atom, forms an oxo group (however, when Z1 is a methine group, X 15 and X 16 One of them is a hydrogen atom, and the other does not exist. 18 When X forms an oxo group, 17 It does not exist. R 22 This represents a hydroxyalkyl group (e.g., hydroxymethyl group, hydroxyethyl group, etc.) or an acetoxymethyl group; R 23 This represents either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 24 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group), which may be substituted with a hydroxyl group, or a linear or branched saturated or unsaturated fatty acid having 8 to 22 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be esterified to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); The dashed lines indicate that unsaturated bonds may also be present.

[0109] [ka]

[0110] [In formula (6), R 25 This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms, which may be substituted with a hydroxyl group, or a hydrogen atom; X 19 represents a hydrogen atom, an acetyl group, or a glyceryl group; R 26This refers to a linear, branched, or cyclic saturated or unsaturated hydrocarbon group having 5 to 22 carbon atoms (the hydrocarbon group is preferably an alkyl group), which may be substituted with a hydroxyl group or an amino group, or a linear or branched saturated or unsaturated fatty acid having 8 to 22 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, esterified to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); R 27 This represents a hydrogen atom, or a hydrocarbon group having a total of 1 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group), which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group. More preferable, Pseudo-ceramides are even more preferred. N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanamide is more preferably the above <25> The emulsifying composition described.

[0111] <27> The content of component (F) is preferably 0.01% by mass or more in the total composition, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, preferably 5% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less. <25> or <26> The emulsifying composition described.

[0112] <28> The water content is preferably 40% by mass or more in the total composition, more preferably 50% by mass or more, preferably 85% by mass or less, and more preferably 83% by mass or less. <1> ~ <27> The emulsified composition according to any one of the following. <29> The gel has an α-type structure, <1> ~ <28> The emulsified composition according to any one of the following. <30> The oil-in-water emulsion cosmetic composition is the aforementioned <1> ~ <29> The emulsified composition according to any one of the following. <31> The above is a skin cosmetic. <1> ~ <30> The emulsified composition according to any one of the following. <32> The above is characterized in that component (F) is N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanamide (ceramide functional component). <25> The emulsifying composition described.

[0113] <33>The following components (A), (B) and (C): (A) 0.2 to 6% by mass of a polymer having a cellulose skeleton, in which the substituents selected from a hydroxypropyl group, a hydroxybutyl group and an amide group are substituted at 2.4 or more per glucose, (B) A liquid dihydric alcohol, (C) One or more compounds selected from sphingosine, a salt of sphingosine, pseudo-sphingosine, a salt of pseudo-sphingosine, an anionic surfactant and a cationic surfactant An emulsified composition containing the same.

Examples

[0114] Examples 1 to 16 and Comparative Examples 1 to 6 Oil-in-water emulsified cosmetics having the compositions shown in Tables 1 and 2 were produced, and evaluated for improvement in the brightness of the bare skin, improvement in the uneven redness of the cheeks of the bare skin, improvement in the smoothness of the bare skin, no unevenness in makeup, good makeup texture, and long-lasting makeup. The results are shown together in Tables 1 and 2. In addition, it was confirmed by structural analysis using X-rays that the cosmetics of Examples 2 to 16 and Comparative Examples 1 to 6 formed a gel having an α-type structure. Furthermore, Example 4 is for reference only.

[0115] (Production method) 1) Components (C), (D), (E) and (F) were uniformly mixed, heated to 85°C and dissolved, and also mixed with the oil-phase components other than those described above heated to 85°C to obtain an oil-phase mixture. 2) Separately, the aqueous-phase components other than components (A) and (B) were mixed at 85°C to make them uniform. This mixture was added to the oil-phase mixture of 1) above heated to 85°C, and then continuously stirred at 85°C to make it uniform, and then cooled to 25°C while stirring. 3) Finally, a mixture of components (A) and (B) uniformly dissolved by stirring at room temperature was added, and stirred until uniform to obtain an oil-in-water emulsified cosmetic.

[0116] (Evaluation method) (1) Improvement in the brightness of the bare skin: Each cosmetic product (600mg) was applied twice daily, morning and evening, for 7 consecutive days. The brightness of the bare skin, as seen in a mirror after washing, was evaluated before and after continuous use. Five professional evaluators evaluated each participant's skin according to the following criteria, and the results are shown as the total score from the five evaluators. 5; There is a clear improvement compared to before continuous use. 4; There is a slight improvement compared to before continuous use. 3; No change. 2; The condition has worsened slightly compared to before continuous use. 1; The condition has worsened compared to before continuous use.

[0117] (2) Improving redness and unevenness of the cheeks: Each cosmetic product (600mg) was applied twice daily, morning and evening, for 7 consecutive days. Redness and unevenness of the cheek area of ​​the bare skin after washing were evaluated using a mirror before and after application. Five professional evaluators evaluated each participant's skin according to the following criteria, and the results are shown as the total score from the five evaluators. 5; Redness and uneven skin tone have clearly decreased compared to before continuous use. 4. Compared to before continuous use, the redness and unevenness have decreased slightly. 3; No change. 2. Compared to before continuous use, there is a slight increase in redness and unevenness. 1. Redness and unevenness have increased compared to before continuous use.

[0118] (3) Improved skin smoothness: Each cosmetic product (600mg) was applied twice daily, morning and evening, for 7 days. The smoothness of the skin after washing was evaluated before and after continuous use. Five professional evaluators evaluated each skin according to the following criteria, and the results are shown as the total score from the five evaluators. 5; My skin is noticeably smoother compared to before I started using it. 4. My skin is slightly smoother compared to before I started using it. 3; No change. 2. My skin is slightly rougher compared to before I started using it. 1. My skin is noticeably rougher compared to before I started using it.

[0119] (4) Makeup does not apply unevenly: After applying 600 mg of each cosmetic to the entire face, five professional evaluators evaluated the unevenness when applying a commercially available powder foundation according to the following criteria. The results are shown as the total score of the five evaluators. 5: No unevenness and uniform. 4: Some unevenness but almost uniform. 3: Some unevenness and not uniform. 2: Uneven and not uniform. 1: Considerable unevenness and not uniform.

[0120] (5) Good makeup texture: After applying 600 mg of each cosmetic to the entire face twice a day, morning and evening, for three days, washing the face, and then applying a general lotion and emulsion, five professional evaluators evaluated the degree of makeup texture when applying a commercially available powder foundation according to the following criteria. The results are shown as the total score of the five evaluators. 5: Very good makeup texture. 4: Good makeup texture. 3: Somewhat good makeup texture. 2: Bad makeup texture. 1: Very bad makeup texture.

[0121] (6) Makeup lasts: After applying 600 mg of each cosmetic to the entire face, five professional evaluators applied 60 mg of a commercially available powder foundation. The degree of makeup breakdown 5 hours after applying the makeup was evaluated according to the following criteria. The results are shown as the total score of the five evaluators. 5: The foundation remains on the skin. 4: The foundation mostly remains on the skin. 3: The foundation somewhat remains on the skin. 2: The foundation hardly remains on the skin. 1: The foundation does not remain on the skin.

[0122]

Table 1

[0123]

Table 2

[0124] Examples 17-18 We manufactured an oil-in-water emulsion cosmetic (makeup base) with the composition shown in Table 3. All of the resulting cosmetics can improve skin conditions such as roughness (scaling) on ​​the surface of the bare skin, redness around the pores, and uneven redness of the skin. When foundation or other makeup is applied, it adheres well, provides a uniform finish without unevenness, and the makeup lasts a long time.

[0125] (Manufacturing method) 1) Components (C), (D), (E), and (F) were uniformly mixed, heated to 85°C to dissolve, and stirred to obtain a mixture. 2) Separately, the aqueous phase components other than components (A) and (B) were mixed at 85°C until homogenized. This mixture was added to the mixture from 1) above, which had been heated to 85°C, and continued to be stirred at 85°C until homogenized, then cooled to 25°C while stirring. 3) Separately, a mixture of components (A) and (B), which had been stirred at room temperature to dissolve uniformly, was added and stirred until uniform to obtain the mixture. 4) Finally, the oil phase components other than those in 1) and the powder were uniformly mixed at room temperature and added to the mixture from 3), and stirred to obtain an oil-in-water emulsion cosmetic.

[0126] [Table 3]

Claims

1. The following components (A), (B), and (C): (A) A polymer having a cellulose backbone, in which substituents selected from hydroxypropyl groups, hydroxybutyl groups, and amide groups are substituted at a rate of 2.4 or more per glucose unit, 0.1 to 6% by mass. (B) Liquid dihydric alcohol, 3 to 12% by mass, (C) One or more compounds selected from sphingosine, sphingosine salts, pseudosphingosine, pseudosphingosine salts, anionic surfactants, and quaternary ammonium salt type cationic surfactants, 0.1 to 3% by mass An emulsified composition containing, wherein the anionic surfactant is N-acyl glutamic acid having 12 to 24 carbon atoms or a salt thereof, and the mass ratio (A) / (C) of component (A) to component (C) is 1 to 6.

2. The emulsified composition according to claim 1, wherein component (A) is hydroxypropylcellulose.

3. The emulsified composition according to claim 1 or 2, wherein the mass ratio (A) / (B) of component (A) to component (B) is 0.05 to 0.

25.

4. The emulsified composition according to any one of claims 1 to 3, wherein the content of component (A) is 0.2 to 6% by mass, and the content of component (B) is 4.5 to 10.50% by mass.

5. The emulsifying composition according to any one of claims 1 to 4, which forms an α-type gel.

6. Furthermore, the emulsified composition according to any one of claims 1 to 5, further comprising (D) glycerin fatty acid ester.

7. Furthermore, the emulsifying composition according to any one of claims 1 to 6, further comprising (E) a higher alcohol.

8. Furthermore, the emulsified composition according to any one of claims 1 to 7, further comprising (F) ceramides.

9. The emulsified composition according to any one of claims 1 to 8, wherein the content of component (C) is 0.2 to 1% by mass.

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