Emulsified composition

Abstract

An emulsified composition contains the following components (A), (B) and (C): (A) a polymer having a cellulose skeleton in which 2.4 or more substituents selected from a hydroxypropyl group, a hydroxybutyl group and an amido group are substituted on each glucose; (B) a liquid dihydric alcohol; and (C) one or two or more compounds selected from the group consisting of a sphingosine, a salt of a sphingosine, a sphingoid base, a salt of a sphingoid base, an anionic surfactant and a cationic surfactant.

Description

Technical Field

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

[0002] For a long time, unsaturated fatty acids in sebum, represented by oleic acid and palmitoleic acid, have been known to affect the skin, including mild inflammation, roughness, enlarged pores, and makeup smudging. Various studies have been conducted in the industry to improve the effects of these unsaturated fatty acids on the skin.

[0003] For example, Patent Document 1 describes an unsaturated fatty acid adsorbent composed of hexagonal plate-shaped zinc oxide coated with oleate surfactants, which can properly adsorb and immobilize the unsaturated fatty acids contained in sebum, and can prevent makeup from fading when used in cosmetics.

[0004] Patent document 2 describes a cosmetic containing silicone microparticles made of silicone elastomer spherical microparticles and silicone microparticles coated with polyorganosilsesquioxane, which can inhibit changes in the properties of makeup cosmetics, color changes, and shine caused by sebum.

[0005] Patent document 3 describes a skin secretion-inhibiting composition containing Butcher's broom extract that can improve skin symptoms associated with excessive sebum secretion.

[0006] On the other hand, hydroxypropyl cellulose has long been used as a water-soluble thickener in pharmaceuticals and cosmetics.

[0007] For example, Patent Document 4 describes a water-in-oil-in-alcohol emulsion composition that is less irritating and more stable when applied to the skin. The water-in-oil-in-alcohol emulsion composition comprises: (a) an alcohol phase containing hydroxypropyl cellulose and in a gel-like state; (b) an oil phase containing palmitic dextrin and in a gel-like state; and (c) an aqueous phase containing polyvinyl alcohol and carboxyvinyl polymer with a saponification degree of 70-98 mol% and in a gel-like state.

[0008] (Patent Document 1) Japanese Patent Application Publication No. 2018-83766

[0009] (Patent Document 2) Japanese Patent Application Publication No. 2011-105662

[0010] (Patent Document 3) Japanese Patent Application Publication No. 2017-178858

[0011] (Patent Document 4) Japanese Patent Application Publication No. 2009-114180 Summary of the Invention

[0012] This invention relates to an emulsifying composition comprising the following components (A), (B) and (C):

[0013] (A) A polymer having a cellulose backbone in which 2.4 or more substituents selected from hydroxypropyl, hydroxybutyl and amide groups are substituted on each glucose molecule;

[0014] (B) Liquid glycol;

[0015] (C) One or more compounds selected from sphingosine, salts of sphingosine, sphingosine-like substances, salts of sphingosine-like substances, anionic surfactants and cationic surfactants. Detailed Implementation

[0016] In existing technologies, such as Patent Documents 1 and 2, when sebum is adsorbed by powder, a makeup-holding effect is achieved on the skin surface where the powder is present, resulting from the local sebum-capturing ability, but no improvement effect on the skin itself can be obtained. Furthermore, as in Patent Document 3, when plant extracts are used, although sebum secretion is inhibited, the effects on the skin are not improved by capturing unsaturated fatty acids.

[0017] The inventors have discovered that by using highly substituted hydroxypropyl cellulose to specifically capture unsaturated fatty acids, such as oleic acid, which are components of sebum from the outside, the skin condition can be improved. Furthermore, by combining liquid diols and specific compounds, an emulsified composition with a high effect on inhibiting skin roughness caused by sebum can be obtained.

[0018] The emulsified composition of the present invention can improve skin conditions such as redness, unevenness, brightness, and smoothness (roughness of the skin surface) of bare skin, and has good adhesion when applying foundation, etc., so as to achieve a uniform finish without uneven application and maintain makeup.

[0019] The component (A) used in this invention is a polymer with a cellulose backbone in which substituents selected from hydroxypropyl, hydroxybutyl and amide groups are substituted on each glucose molecule by more than 2.4 groups.

[0020] In component (A), for the hydroxyl groups of cellulose, the substituents selected from hydroxypropyl, hydroxybutyl and amide groups are substituted for each glucose group 2.4 or more (degree of substitution 2.4 or more), the degree of substitution is preferably 3 or more, and preferably 10 or less, more preferably 5 or less.

[0021] Here, the degree of substitution is the average number of substituted hydroxyl groups per glucose molecule. In cases where substituents such as hydroxypropyl also contain hydroxyl groups, these hydroxyl groups are also etherified during the reaction. The molar degree of substitution, which is the number of substituents per glucose molecule, is greater than 3, for example, in the case of hydroxypropyl.

[0022] Furthermore, the degree of substitution can be determined by the Zeisel method (see Analytical Chemistry, Vol. 51, No. 13, 2172 (1979), “Japanese Pharmacopoeia, 15th Revision (Item on Analytical Methods for Hydroxypropyl Cellulose)”).

[0023] As component (A), hydroxypropyl cellulose is preferred from the viewpoint of gelling unsaturated fatty acids.

[0024] In addition, the polymer of component (A) is preferably free of substituents other than hydroxypropyl, hydroxybutyl and amide groups.

[0025] Furthermore, from the viewpoint of gelling unsaturated fatty acids, the average molecular weight of component (A) is preferably 40,000 to 2,500,000, more preferably 100,000 to 2,500,000.

[0026] Here, the average molecular weight was determined using GPC (Gel Permeation Chromatograph).

[0027] Such polymers can be manufactured, for example, by adding propylene oxide to alkali cellulose that has been activated by alkali treatment. For example, hydroxypropyl cellulose with hydroxypropyl substituents is manufactured by performing a very complex activation treatment known as alkali treatment or mercerization, in which cellulose is mixed with a large amount of water and a large excess of alkali metal hydroxides such as sodium hydroxide in a slurry state to produce alkali cellulose, and then propylene oxide is applied to the alkali cellulose.

[0028] In addition, 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 Corporation), KLUCEL MF Pharm, and KLUCEL HPC (manufactured by Ashland Corporation) can be used.

[0029] Component (A) may be used alone or in combination of two or more. Regarding its content, from the viewpoint of improving the ability to capture unsaturated fatty acids by gelling them, improving skin condition, or improving the adherence and unevenness of makeup when applying foundation, etc., and improving its durability, it is preferably 0.1% by mass or more in the total composition, more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more. Furthermore, from the viewpoint of improving the adherence and unevenness of makeup when applying foundation, etc., and improving its durability and usability, 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. Additionally, the content of component (A) in the total composition is preferably 0.1 to 6% by mass, 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. Furthermore, it is preferably 0.2 to 6% by mass.

[0030] In the liquid diol of component (B), "liquid" means that it is fluid at 25°C.

[0031] Examples of liquid diols include: ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butanediol, 1,3-propanediol, 1,2-propanediol, pentanediol, etc.

[0032] From the viewpoint of improving the capture effect of unsaturated fatty acids in ingredient (A), improving skin condition, improving the adherence or uneven application of makeup when applying foundation, and improving its durability, it is preferable to include at least one of propylene glycol, dipropylene glycol, 1,3-butanediol, propanediol, and pentanediol, and more preferably 1,3-butanediol or propylene glycol.

[0033] Component (B) may be used alone or in combination of two or more. Regarding the content, from the viewpoint of improving the dispersibility of component (A), enhancing the capture effect of unsaturated fatty acids, improving skin condition, improving the adherence or uneven application of makeup when applying foundation, etc., and improving durability, it is preferably 2% by mass or more in the total composition, more preferably 3% by mass or more, and even more preferably 4.5% by mass or more. From the viewpoint of user experience, it is preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less. In addition, the content of component (B) in the total composition is preferably 2 to 15% by mass, more preferably 3 to 12% by mass, and even more preferably 4.5 to 10% by mass.

[0034] In this invention, from the viewpoint of gelling unsaturated fatty acids, improving the capture effect of unsaturated fatty acids, improving skin condition, improving makeup adherence or uneven application when applying foundation, and improving durability, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.05 or more, more preferably 0.08 or more, and even more preferably 0.12 or more. Furthermore, from the viewpoint of improving makeup unevenness and adherence, it is preferably 0.6 or less, more preferably 0.45 or less, and even more preferably 0.35 or less. Additionally, 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.

[0035] Component (C) is one or more compounds selected from sphingosine, salts of sphingosine, sphingosine-like substances, salts of sphingosine-like substances, anionic surfactants and cationic surfactants.

[0036] Among the compounds of component (C), sphingosine and sphingosine-like compounds can be listed as sphingosines represented by the following general formula (1).

[0037]

[0038] (In formula (1),)

[0039] R 1 It refers to a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 4 to 30 carbon atoms that can be replaced by hydroxyl, carbonyl, or amino groups;

[0040] Y represents a methylene, methine, or oxygen atom;

[0041] X 1 X 2 and X 3 Each can be independently represented by a hydrogen atom, a hydroxyl group, or an acetoxy group.

[0042] X 4 This represents a hydrogen atom, an acetyl group, or a glycerol group, or a bridging oxygen group formed together with an adjacent oxygen atom (where, when Y is methine, X...). 1 With X 2 Either one of them is a hydrogen atom, and the other does not exist; in X 4 When bridging groups are formed, X 3 It does not exist.

[0043] R 2 and R 3 Each can independently represent a hydrogen atom, hydroxyl group, hydroxymethyl group, or acetoxymethyl group;

[0044] Each R can be a hydrogen atom or a formamidinium group, or can represent a straight-chain or branched saturated or unsaturated hydrocarbon group with a total number of carbon atoms of 1 to 8, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy groups.

[0045] 'a' represents a number of 2 or 3;

[0046] The dashed lines can also represent unsaturated bonds.

[0047] In equation (1), R 1 It refers to a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 4 to 30 carbon atoms that can be substituted by a hydroxyl group, a carbonyl group, or an amino group, but preferably a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 7 to 22 carbon atoms that can be substituted by a hydroxyl group.

[0048] Preferably, the alkyl group is a straight-chain or branched alkyl group with 10 to 20 carbon atoms, or a straight-chain or branched alkyl group with 10 to 20 carbon atoms having a hydroxyl group at the Y-side end. In the case of branched alkyl groups, it is preferable that the branch is a methyl branch, etc. Specific examples of preferred alkyl groups include: tridecyl, tetradecyl, pentadecyl, hexadecyl, 1-hydroxytridecyl, 1-hydroxypentadecanyl, isohexadecanyl, and isostearyl.

[0049] Y represents any one of methylene (CH2), methine (CH), or oxygen atom.

[0050] X 1 X 2 and X 3 Each of the following can be independently represented: hydrogen atom, hydroxyl group, or acetoxy group. X 4 This indicates a substituent that, together with a hydrogen atom, acetyl group, glycerol group, and adjacent oxygen atom, forms a bridging oxygen group.

[0051] As X 1 X 2 and X 3 The combination of X is preferred. 1 X 2 and X 3 The combination of 0 to 1 hydroxyl groups and the remainder being hydrogen atoms. As X 4 Preferably, it contains hydrogen atoms.

[0052] Furthermore, when Y is methine, only X 1 With X 2 Either one of them is a hydrogen atom, and the other does not exist. Additionally, in X... 4 When bridging groups are formed, X 3 It does not exist.

[0053] R 2 and R 3Each can be independently represented by a hydrogen atom, hydroxyl group, hydroxymethyl group, or acetoxymethyl group. R 3 In this context, hydrogen atoms are particularly preferred.

[0054] Additionally, 'a' represents a number of 2 or 3. When 'a' is 2, 'R' represents R. 4 and R 5 When a is 3, R represents R 4 R 5 and R 6 .

[0055] R 4 R 5 and R 6 Each of these groups can be a hydrogen atom or a formamidinium group, or it can represent a straight-chain or branched hydrocarbon group having 1 to 8 carbon atoms, selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy substituents. As the hydroxyalkoxy group capable of substitution, a straight-chain or branched hydroxyalkoxy group with 1 to 7 carbon atoms is preferred. Furthermore, as the alkoxy group, a straight-chain or branched alkoxy group with 1 to 7 carbon atoms is preferred.

[0056] As R 4 R 5 and R 6 Examples include: hydrogen atoms; formamidinyl; straight-chain or branched alkyl groups such as methyl, ethyl, propyl, 2-ethylhexyl, and isopropyl; alkenyl groups such as vinyl and allyl; and hydrocarbon groups with a total carbon number of 1 to 8 that have undergone 1 to 6 substitutions selected from hydroxyl, hydroxyalkoxy, and alkoxy groups.

[0057] Among these, as R 4 R 5 and R 6 Preferably, the hydrogen atom, or methyl, 2-hydroxyethyl, 1,1-dimethyl-2-hydroxyethyl, 1,1-bis(hydroxymethyl)ethyl, 2-(2-hydroxyethoxy)ethyl, etc., can be selected from 1 to 3 substituted alkyl groups of hydroxyl and hydroxyalkoxy.

[0058] As the sphingosine represented by general formula (1), it is preferred to be a natural sphingosine or a synthetic compound with the same structure represented by the following general formula (2), or a sphingosine-like substance represented by the following general formula (3) (hereinafter also called a sphingosine-like substance).

[0059]

[0060] (In formula (2),)

[0061] R 7 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 7 to 19 carbon atoms that can be replaced by a hydroxyl group;

[0062] Y1 represents methylene or methine;

[0063] X 5 X 6 and X 7 Each can be used independently to represent a hydrogen atom, a hydroxyl group, or an acetoxy group;

[0064] X 8 This represents a hydrogen atom, or a hydrogen atom that forms a bridging oxygen group with an adjacent oxygen atom (where, when Y1 is a methine, X...). 5 With X 6 Either one of them represents a hydrogen atom, and the other does not exist; in X 8 When bridging groups are formed, X 7 It does not exist.

[0065] R 8 Indicates hydroxymethyl or acetoxymethyl;

[0066] Each R1 can be a hydrogen atom or a formamidinium group, or can represent a straight-chain or branched saturated or unsaturated hydrocarbon group with a total number of carbon atoms of 1 to 4, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy groups.

[0067] 'a' represents a number of 2 or 3;

[0068] The dashed lines can also represent unsaturated bonds.

[0069]

[0070] (In formula (3),)

[0071] R 9 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 10 to 22 carbon atoms that can be replaced by a hydroxyl group;

[0072] X 9 Represents a hydrogen atom, acetyl group, or glycerol group;

[0073] Each R2 can be a hydrogen atom or a formamidinium group, or can represent a straight-chain or branched saturated or unsaturated hydrocarbon group with a total number of carbon atoms of 1 to 8, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy groups.

[0074] 'a' represents a number of 2 or 3.

[0075] Here, we will explain the natural sphingosine represented by general formula (2).

[0076] In equation (2), R is used as 7 Preferably, it is a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 7 to 19 carbon atoms, more preferably a straight-chain saturated or unsaturated hydrocarbon group with 13 to 15 carbon atoms. In addition, a in formula (2) is preferably 2, and R1 in formula (2) is preferably a hydrogen atom or a straight-chain or branched alkyl group with 1 to 4 carbon atoms, respectively.

[0077] Specifically, examples of natural sphingosine represented by general formula (2) include: sphingosine (natural sphingosine), dihydrosphingosine, phytosphingosine, sphingadienine, dehydrosphingosine, dehydrophytosphingosine, and their N-alkyl forms (e.g., N-methyl forms).

[0078] These sphingosines can be optically active in their native (D(+) form) or non-native (L(-)) form, or even a mixture of the native and non-native forms. The relative configuration of the above compounds can be the native configuration, the non-native configuration, or a mixture thereof.

[0079] Among such natural sphingosines, compounds selected from the group (α) represented by the following formula are preferred, and more preferably phytosphingosine (INCI name, 8th edition).

[0080]

[0081] (In the formula, m represents 5 to 17, and l represents 1 to 13)

[0082] These can be either natural extracts or synthetic compounds, and commercially available products can be used.

[0083] Commercially available natural sphingosine products include, for example: D-Sphingosine (4-Sphingenine) (manufactured by SIGMA-ALDRICH), DS-phytosphingosine (manufactured by DOOSAN), and phytosphingosine (manufactured by Cosmofarm).

[0084] Next, we will explain the sphingosine analogues represented by general formula (3).

[0085] In equation (3), R is used as 9 Preferably, it is an isostearyl group with 14 to 20 carbon atoms, and particularly preferably isostearyl group. As isostearyl group, the most preferred isostearyl group is obtained from isostearyl alcohol, which is a byproduct of the production of dimer acid using fatty acids derived from vegetable and animal oils, as the feed oil.

[0086] In addition, in equation (3), when a is 2, R2 represents R a10 and R a11 When a is 3, R2 represents R a10 R a11 and R a12 .

[0087] As R a10 R a11 and R a12 Examples of substituents include: hydrogen atoms; formamidinyl groups; straight-chain or branched alkyl groups such as methyl, ethyl, propyl, 2-ethylhexyl, and isopropyl; alkenyl groups such as vinyl and allyl; and alkyl groups having a total carbon number of 1 to 8, 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. Furthermore, the number of substituents is preferably 1 to 6, more preferably 1 to 3.

[0088] As R a10 and R a11 The combination of is preferably R a10 and R a11 One of them is a hydrogen atom, and the other is a combination of 2-hydroxyethyl, 1,1-dimethyl-2-hydroxyethyl, 1,1-bis(hydroxymethyl)ethyl, or 2-(2-hydroxyethoxy)ethyl (secondary amine).

[0089] As a sphingosine-like substance, R in formula (3) is preferred. 9 It is isostearyl group, X 9 For hydrogen atoms, R a10 For hydrogen atoms, R a11 Sphingosines are alkyl groups of 2-hydroxyethyl, 1,1-dimethyl-2-hydroxyethyl, 1,1-bis(hydroxymethyl)ethyl, or 2-(2-hydroxyethoxy)ethyl, etc., which are substituted with 1 to 3 alkyl groups selected from hydroxyl and hydroxyalkoxy.

[0090] Preferred examples of sphingosine derivatives include the following sphingosine derivatives (i) to (iv). Among these, sphingosine derivative (ii) is preferred, and 1-(2-hydroxyethylamino)-3-isostearoxy-2-propanol is more preferred.

[0091] Furthermore, sphingosine monophosphates can be commercially available products or synthetic products obtained by conventional methods.

[0092]

[0093] Salts of these sphingosines and sphingosine-like substances include: acidic amino acid salts such as glutamic acid and aspartic acid; basic amino acid salts such as arginine; inorganic acid salts such as phosphate and hydrochloric acid; monocarboxylic acid salts such as acetic acid; dicarboxylic acid salts such as succinic acid; and hydroxycarboxylic acid salts such as citric acid, lactic acid, and malic acid.

[0094] Among these, succinate, lactate, arginine, and glutamate are preferred as salts of sphingosine or sphingosine-like salts, and glutamate is more preferred as a salt of glutamate.

[0095] Of the sphingosine, sphingosine salts, sphingosine-like substances, and sphingosine-like salts mentioned above, only one type may be used, or two or more types may be used in combination. Furthermore, from the viewpoint of storage stability, sphingosine-like substances and sphingosine-like salts are preferred.

[0096] Furthermore, among the compounds of component (C), examples of cationic surfactants include quaternary ammonium salt cationic surfactants and amine salt cationic surfactants, with quaternary ammonium salt cationic surfactants being preferred. Moreover, examples of amine salt cationic surfactants include alkylamine salts.

[0097] Among such cationic surfactants, quaternary ammonium salt cationic surfactants represented by the following general formula (7) are preferred.

[0098]

[0099] (In equation (7),)

[0100] R 31 Represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 6 or more carbon atoms.

[0101] R 32 Indicates alkyl groups having 1 to 4 carbon atoms.

[0102] R 33 and R 34 Each of these groups independently represents an alkyl group having 1 to 4 carbon atoms, or a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms.

[0103] AN - (This indicates the formation of a salt anion.)

[0104] In equation (7), R 31 R 33 and R 34 The carbon number of the "straight-chain, branched or cyclic saturated or unsaturated hydrocarbon group" is preferably 6 to 30, more preferably 8 to 24, even more preferably 12 to 22, and particularly preferably 16 to 20.

[0105] Examples of hydrocarbon groups include alkyl, alkenyl, and aralkyl. Among these, alkyl and alkenyl are preferred, and alkyl is more preferred.

[0106] Similarly, the alkyl group preferably has 6 to 30 carbon atoms, more preferably 8 to 24, even more preferably 12 to 22, and particularly preferably 16 to 20. Furthermore, the alkyl group can be linear or branched. Examples include octyl, nonyl, decyl, undecyl, 1-methyldecyl, dodecyl, 1-methylundecyl, 1-ethyldecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, octadecyl, behenyl, etc.

[0107] The alkenyl groups mentioned above can be linear or branched. Examples include: decenyl, undecenyl, dodecenyl, tetradecenyl, hexadecenyl, etc.

[0108] Examples of aryl groups include benzyl and phenethyl.

[0109] R 32 R 33 and R 34 The alkyl group referred to as "alkyl group having 1 to 4 carbon atoms" preferably has 1 or 2 carbon atoms, and particularly preferably 1. Furthermore, the alkyl group can be linear or branched. Examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, and isobutyl.

[0110] As R 33 and R 34 Combinations of R can be listed as follows: 33 and R 34 All are combinations of alkyl groups having 1 to 4 carbon atoms; R 33 and R 34 One of them is an alkyl group having 1 to 4 carbon atoms, and the remainder is a combination of straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms; R 33 and R 34 All are combinations of straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms. Among these combinations, R is preferred. 33 and R34 All are combinations of alkyl groups having 1 to 4 carbon atoms; R 33 and R 34 One of them is an alkyl group having 1 to 4 carbon atoms, and the remainder is a combination of straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms, more preferably R. 33 and R 34 One of them is an alkyl group having 1 to 4 carbon atoms, and the remainder is a combination of straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms.

[0111] In addition, in equation (7), AN - It is represented as a salt anion. Examples include: halide ions (such as chloride ions, iodide ions), sulfate ions, phosphate ions, acetate ions, lactate ions, p-toluenesulfonate ions, perchlorate ions, monoalkyl nitrate ions (such as methyl sulfate ions, ethyl sulfate ions), etc., preferably halide ions.

[0112] As cationic surfactants, more specifically, examples include: alkyl trimethylammonium chlorides such as octyltrimethylammonium chloride, decyltrimethylammonium chloride, lauryltrimethylammonium chloride, tetradecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, etc.; dialkyl dimethylammonium chlorides such as disephthalyldimethylammonium chloride, distearyldimethylammonium chloride, etc.; and trialkylmethylammonium salts, etc.

[0113] Among these, dialkyldimethylammonium salts are preferred.

[0114] Furthermore, in component (C), there are no restrictions on the anionic surfactants used in common cosmetics. Examples include: sodium lauryl sulfate, potassium palmitate, stearic acid arginine, and other fatty acids with 12-24 carbon atoms or their salts; sodium lauryl sulfate, potassium lauryl sulfate, and other alkyl sulfates with 12-24 carbon atoms or their salts; polyoxyethylene lauryl sulfate triethanolamine and other alkyl ether sulfates with 12-24 carbon atoms or their salts; sodium lauroyl sarcosinate and other acyl sarcosines with 12-24 N-carbon atoms or their salts; sodium monostearyl phosphate and other alkyl phosphates with 12-24 carbon atoms or their salts; polyoxyethylene oil-based... Sodium ether phosphate, sodium polyoxyethylene stearyl ether phosphate, and other alkyl ether phosphates or salts thereof with 12-24 carbon atoms in polyoxyethylene; sodium di-2-ethylhexyl sulfosuccinate and other dialkyl sulfosuccinic acid or salts thereof with 12-24 carbon atoms; sodium N-stearoyl-N-methyl taurate and other N-alkyl acyl methyl taurate or salts thereof with 12-24 carbon atoms; sodium dilauroyl glutamate, monosodium N-lauroyl glutamate, sodium N-stearoyl-L-glutamate, sodium N-stearoyl-L-glutamate, arginine N-stearoyl glutamate, sodium N-stearoyl glutamate, sodium N-myristoyl-L-glutamate, and other N-acyl glutamate or salts thereof with 12-24 carbon atoms.

[0115] From the viewpoint of ease of preparation of the formulation, N-acylglutamic acid or its salt having 12 to 24 carbon atoms, fatty acid salt having 12 to 24 carbon atoms, and polyoxyethylene alkyl ether phosphate having 12 to 24 carbon atoms are preferred, N-acylglutamic acid salt having an acyl group having 12 to 24 carbon atoms are more preferred, N-acylglutamic acid salt having 12 to 20 carbon atoms are even more preferred, and N-stearoyl-L-glutamic acid salt is even more preferred.

[0116] The compound in component (C) may be used alone or in combination of two or more. From the viewpoint of preservation stability and avoiding uneven application when the foundation is applied to the film, it is preferable to use at least one or more compounds selected from sphingosine, salts of sphingosine, sphingosine-like substances, and salts of sphingosine-like substances. More preferably, it is preferable to use at least one or more compounds selected from phytosphingosine, salts of phytosphingosine, sphingosine-like substances (ii), and salts of sphingosine-like substances (ii). Particularly preferred is to use at least one or more compounds selected from phytosphingosine, salts of phytosphingosine, 1-(2-hydroxyethylamino)-3-isostearoxy-2-propanol, and salts of 1-(2-hydroxyethylamino)-3-isostearoxy-2-propanol.

[0117] Furthermore, when at least one or more of the following are used: sphingosine, salts of sphingosine, sphingosine-like substances, and salts of sphingosine-like substances, a cationic surfactant may also be included.

[0118] Component (C) may be used in one form or in combination of two or more. Regarding its content, from the viewpoint of preserving stability, improving makeup adherence and evenness when applying foundation, and enhancing staying power, it is preferably 0.05% by mass or more in the total composition, more preferably 0.1% by mass or more, further preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more. From the viewpoint of maintaining the staying power of foundation, it is preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 1% by mass or less, and even more preferably 0.6% by mass or less. Furthermore, the content of component (C) in the total composition is preferably 0.05 to 5% by mass, more preferably 0.1 to 3% by mass, further preferably 0.2 to 1% by mass, and even more preferably 0.3 to 0.6% by mass.

[0119] In this invention, from the viewpoint of gelling unsaturated fatty acids, improving the capture effect of unsaturated fatty acids, improving skin condition, improving the adherence or unevenness of makeup when applying foundation, and improving durability, the mass ratio (A) / (C) of component (A) to component (C) is preferably 0.1 or more, more preferably 0.5 or more, further preferably 1 or more, and preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. Furthermore, the mass ratio (A) / (C) of component (A) to component (C) is preferably 0.1 to 10, more preferably 0.5 to 8, and even more preferably 1 to 6.

[0120] The emulsifying composition of the present invention may further contain (D) glycerol fatty acid esters, which can improve emulsification stability, makeup adherence or uneven application when applying foundation, etc., and enhance durability.

[0121] From the perspective of emulsification stability, monoglyceride fatty acid esters are preferred as glycerol fatty acid esters. As monoglyceride fatty acid esters, residues of fatty acids having 10 to 24 carbon atoms are preferred, residues of fatty acids having 16 to 24 carbon atoms are more preferred, and residues of fatty acids having 18 to 24 carbon atoms are particularly preferred. Furthermore, the "fatty acid" constituting the monoglyceride fatty acid ester can be a saturated fatty acid or an unsaturated fatty acid; it can also be a straight-chain fatty acid or a branched-chain fatty acid. As a monoglyceride fatty acid ester, residues of saturated fatty acids are preferred, and residues of straight-chain saturated fatty acids are more preferred.

[0122] Examples of glycerol monofatty acid esters include: glycerol monolaurate, glycerol monomyristate, glycerol monopalmitate, glycerol monostearate, glycerol monobehenate, glycerol monooleate, glycerol monoisostearate, and glycerol monolinoleate. Among these, glycerol monostearate and glycerol monobehenate are preferred.

[0123] Component (D) may be used alone or in combination of two or more. Regarding its content, from the viewpoint of improving emulsification stability, makeup adherence when applying foundation, and reducing uneven application, it is preferably 0.1% by mass or more in the total composition, more preferably 0.3% by mass or more, further preferably 0.5% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, and further preferably 2% by mass or less. Furthermore, the content of component (D) in the total composition is preferably 0.1 to 5% by mass, more preferably 0.3 to 3% by mass, and further preferably 0.5 to 2% by mass.

[0124] The emulsifying composition of the present invention may further contain (E) higher alcohols, which can improve emulsion stability, makeup adherence, or uneven application when applying foundation, etc.

[0125] As a higher alcohol, a monohydric alcohol with 10 to 24 carbon atoms is preferred, a monohydric alcohol with 12 to 22 carbon atoms is more preferred, and a monohydric alcohol with 14 to 22 carbon atoms is even more preferred. In addition, the higher alcohol can be straight-chain or branched-chain, and can be saturated or unsaturated, but straight-chain saturated or unsaturated alcohols are preferred.

[0126] Examples of higher alcohols include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, and oleyl alcohol. Among these, cetyl alcohol, stearyl alcohol, and behenyl alcohol are preferred, and cetyl alcohol and behenyl alcohol are more preferred.

[0127] Component (E) may be used alone or in combination of two or more. Regarding its content, from the viewpoint of improving emulsification stability and reducing makeup adherence and uneven application when applying foundation, it is preferably 0.1% by mass or more in the total composition, more preferably 0.3% by mass or more, further preferably 0.5% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, and further preferably 2% by mass or less. Furthermore, the content of component (E) in the total composition is preferably 0.1 to 5% by mass, more preferably 0.3 to 3% by mass, and further preferably 0.5 to 2% by mass.

[0128] The emulsified composition of the present invention may further contain (F) ceramides, which can improve skin condition (moisture content, etc.).

[0129] As ceramides, examples of ceramides represented by general formula (4) can be listed.

[0130]

[0131] (in equation (4),)

[0132] R 11It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group or hydrogen atom with 4 to 30 carbon atoms that can be replaced by hydroxyl, carbonyl, or amino groups;

[0133] Z represents methylene, methine, or an oxygen atom;

[0134] X 11 X 12 and X 13 Each can be independently represented by a hydrogen atom, a hydroxyl group, or an acetoxy group.

[0135] X 14 This represents a hydrogen atom, an acetyl group, or a glycerol group, or a bridging oxygen group formed together with an adjacent oxygen atom (where, when Z is methine, X...). 11 With X 12 Either one of them is a hydrogen atom, and the other does not exist; in X 14 When bridging groups are formed, X 13 It does not exist.

[0136] R 12 and R 13 Each can independently represent a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., hydroxymethyl, hydroxyethyl, etc.), or an acetoxymethyl group;

[0137] R 14 It refers to a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 5 to 60 carbon atoms that can be substituted by hydroxyl, carbonyl, or amino groups and can have ether, ester, or amide bonds on the main chain;

[0138] R 15 Represents a hydrogen atom, or a straight-chain or branched saturated or unsaturated hydrocarbon group having 1 to 30 carbon atoms and substituents selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy (Furthermore, in R... 11 When R is a hydrogen atom and Z is an oxygen atom, 15 Preferably, the hydrocarbon group having a total carbon number of 10 to 30, with substituents selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy, is preferred. Furthermore, in R... 11 When R is a hydrocarbon group, 15 Preferably, it represents a hydrogen atom, or it may have a hydrocarbon group with a total number of 1 to 8 carbon atoms having substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy.

[0139] The dashed lines can also represent unsaturated bonds.

[0140] In equation (4), R is used as 11The term "a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 4 to 30 carbon atoms that can be substituted by a hydroxyl group, a carbonyl group, or an amino group" is preferably a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 7 to 22 carbon atoms that can be substituted by a hydroxyl group.

[0141] Z represents methylene, methine, or oxygen atoms.

[0142] X 11 X 12 and X 13 Each can be represented independently as a hydrogen atom, hydroxyl group, or acetoxy group. As X 11 X 12 and X 13 The combination of X is preferred. 11 X 12 and X 13 The combination of 0 to 1 hydroxyl groups and the remainder being hydrogen atoms. When Z is methine, only X... 11 With X 12 Either one of them is a hydrogen atom, and the other does not exist.

[0143] Additionally, as X 14 Preferably, it contains hydrogen atoms and glycerol groups.

[0144] R 12 and R 13 Each of the following can independently represent a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., hydroxymethyl, hydroxyethyl, etc.), or an acetoxymethyl group, with R being preferred. 12 The atom is hydrogen or hydroxymethyl, preferably R. 13 It is a hydrogen atom.

[0145] R 14 This indicates a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 5 to 60 carbon atoms, which can be substituted with hydroxyl, carbonyl, or amino groups and can have ether, ester, or amide bonds on the main chain. As R 14 Examples of such compounds include: straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon groups with 5 to 35 carbon atoms that can be substituted with hydroxyl or amino groups; or groups formed by ester or amide bonding at the ω-position of such hydrocarbon groups to straight-chain, branched, or cyclic saturated or unsaturated fatty acids with 8 to 22 carbon atoms that can be substituted with hydroxyl groups. Preferably, the bonded fatty acid isostearic acid, 12-hydroxystearic acid, or linoleic acid.

[0146] R 15 It represents a hydrogen atom, or a straight-chain or branched hydrocarbon group with a total number of carbon atoms of 1 to 30, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy.

[0147] In R 11When R is a hydrogen atom and Z is an oxygen atom, 15 Preferably, the hydrocarbon group having a total carbon number of 10 to 30 is selected from substituents chosen from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy. Additionally, in R... 11 When R is a hydrocarbon group, 15 Preferably, it represents a hydrogen atom, or a hydrocarbon group having a total carbon number of 1 to 8 that may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy. More preferably, it represents a hydrogen atom, or a hydrocarbon group having a total carbon number of 1 to 8 that may be substituted by 1 to 3 substituents selected from hydroxyl, hydroxyalkoxy, and alkoxy. Here, hydroxyalkoxy and alkoxy are preferably 1 to 7 carbon atoms.

[0148] As ceramides, those derived from natural sources or synthetic compounds and their derivatives with the same structure as represented by the following general formula (5) (hereinafter also referred to as natural ceramides), or those resembling ceramides represented by the following general formula (6) (hereinafter also referred to as ceramides). From the viewpoint of productivity, ceramides are preferred among natural ceramides and ceramides.

[0149]

[0150] (in equation (5),)

[0151] R 21 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 7 to 19 carbon atoms that can be replaced by a hydroxyl group;

[0152] Z1 represents methylene or methine;

[0153] X 15 X 16 and X 17 Each can be used independently to represent a hydrogen atom, a hydroxyl group, or an acetoxy group;

[0154] X 18 Represents a hydrogen atom, or a hydrogen atom that forms a bridging oxygen group with an adjacent oxygen atom (where, when Z1 is a methine, X...). 15 With X 16 Either one of them is a hydrogen atom, and the other does not exist; in X 18 When bridging groups are formed, X 17 It does not exist.

[0155] R 22 Indicates hydroxyalkyl (e.g., hydroxymethyl, hydroxyethyl, etc.) or acetoxymethyl;

[0156] R 23 It represents a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms;

[0157] R 24It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group (preferably alkyl) with 5 to 30 carbon atoms that can be replaced by a hydroxyl group; or a group consisting of a straight-chain or branched saturated or unsaturated fatty acid with 8 to 22 carbon atoms that can be replaced by a hydroxyl group bonded to the ω-terminus of the hydrocarbon group (preferably alkyl).

[0158] The dashed lines can also represent unsaturated bonds.

[0159]

[0160] (In formula (6),)

[0161] R 25 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group or hydrogen atom with 10 to 22 carbon atoms that can be replaced by a hydroxyl group;

[0162] X 19 Represents a hydrogen atom, acetyl group, or glycerol group;

[0163] R 26 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group (preferably alkyl) with 5 to 22 carbon atoms that can be replaced by hydroxyl or amino groups; or a group consisting of a straight-chain or branched saturated or unsaturated fatty acid with 8 to 22 carbon atoms that can be replaced by hydroxyl groups bonded to the ω-terminus of the hydrocarbon group (preferably alkyl).

[0164] R 27 This represents a hydrogen atom, or a hydrocarbon group (preferably alkyl) with a total number of carbon atoms that can be substituted by a hydroxyl, hydroxyalkoxy, alkoxy, or acetoxy group.

[0165] Here, we will explain the natural ceramide represented by general formula (5).

[0166] In equation (5), R 21 The hydrocarbon group represented has 7 to 19 carbon atoms, preferably 11 to 15, and more preferably 13 to 15. Additionally, as R... 21 The hydrocarbon group represented is preferably a straight-chain alkyl group.

[0167] X 18 It represents a hydrogen atom, or a bridging oxygen atom together with an adjacent oxygen atom.

[0168] Additionally, as R 24 Preferably, it is a straight-chain alkyl group with 9 to 27 carbon atoms that can be substituted by a hydroxyl group, or a group formed by ester bonding linoleic acid to the ω-terminus of the alkyl group. As R 24More preferably, it is trialkyl, 1-hydroxypentadecanyl, 1-hydroxytrialkyl, heptadecanyl, 1-hydroxyundecyl, nonadecanyl, or pentadecyl with linoleic acid ester bonded at the ω-position.

[0169] Specific examples of natural ceramides include ceramides types 1 to 7, which are amidated from sphingosine, dihydrosphingosine, phytosphingosine, or sphingadienol (e.g., pig and human ceramides as described in Figure 2 of J.Lipid.Res., 24:759 (1983) and Figure 4 of J.Lipid.Res., 35:2069 (1994)).

[0170] Furthermore, these N-alkyl forms (e.g., N-methyl forms) are also included in natural ceramides.

[0171] These ceramides can be optically active in their natural (D(-) form) or non-natural (L(+) form) form, or even a mixture of natural and non-natural forms. The relative configurations of the above compounds can be the natural configuration, non-natural configurations, or a mixture thereof.

[0172] Among natural ceramides, compounds of CERAMIDE1, CERAMIDE2, CERAMIDE3, CERAMIDE5, and CERAMIDE6II (hereinafter referred to as INCI, 8th edition) and compounds represented by the following formulas are particularly preferred.

[0173]

[0174] These can be either natural extracts or synthetic compounds, and commercially available products can be used.

[0175] Commercially available natural ceramides include, for example: Ceramide I, Ceramide II, Ceramide III, Ceramide IIIA, Ceramide IIIB, Ceramide IIIC, Ceramide VI (manufactured by Cosmofarm), Ceramide TIC-001 (manufactured by Takasago Fragrance Co., Ltd.), 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).

[0176]

[0177] Next, we will explain the ceramide class represented by general formula (6).

[0178] In equation (6), R is used as 26 Preferably, it is heptyl, 1-hydroxyheptyl, nonyl, tridecyl, pentadecyl, undecyl with linoleic acid ester bonded at the ω position, pentadecyl with linoleic acid ester bonded at the ω position, pentadecyl with 12-hydroxystearic acid ester bonded at the ω position, or undecyl with methyl-branched isostearic acid bonded in the form of an amide bond at the ω position.

[0179] Additionally, in R 25 In the case of hydrogen atoms, as R 27 Preferably, it is a hydrocarbon group with a total carbon number of 1 to 30 that can be replaced by hydroxyl, hydroxyalkoxy, alkoxy or acetoxy (the hydrocarbon group is preferably alkyl), more preferably a hydrocarbon group with a total carbon number of 10 to 30 that can be replaced by hydroxyl, hydroxyalkoxy, alkoxy or acetoxy (the hydrocarbon group is preferably alkyl), and particularly preferably an alkyl group with a total carbon number of 12 to 20.

[0180] In R 25 In the case of a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 10 to 22 carbon atoms that can be replaced by a hydroxyl group, as R 27 Preferably, it is a hydrogen atom or an alkyl group with a total carbon number of 1 to 8 that can be substituted by hydroxyl, hydroxyalkoxy, alkoxy or acetoxy.

[0181] As R 27 The hydroxyalkoxy or alkoxy group in the hydroxyalkoxy group is preferably a hydroxyalkoxy or alkoxy group with 1 to 7 carbon atoms.

[0182] Among ceramide-like compounds, R in general formula (6) is preferred. 25 Hexadecyl, X 19 For hydrogen atoms, R 26 It is pentadecyl, R 27 Compounds that are hydroxyethyl; R in general formula (6) 25 Hexadecyl, X 19 For hydrogen atoms, R 26 For Renji, R 27 Compounds that are hydroxyethyl; R in general formula (6) 25 Hexadecyl, X 19 Glyceryl, R 26 Tridecyl, R 27 Compounds of the 3-methoxypropyl group; R in general formula (6) 25 For hydrogen atoms, X 19 For hydrogen atoms, R 26 It is pentadecyl, R27 Compounds of dodecylane; R in general formula (6) 25 For hydrogen atoms, X 19 For hydrogen atoms, R 26 It is 1-hydroxyheptyl, R 27 Compounds containing dodecyl groups.

[0183] More preferably, R in general formula (6) 25 Hexadecyl, X 19 For hydrogen atoms, R 26 It is pentadecyl, R 27 Compounds that are hydroxyethyl; R in general formula (6) 25 Hexadecyl, X 19 For hydrogen atoms, R 26 For Renji, R 27 Compounds that are hydroxyethyl; R in general formula (6) 25 Hexadecyl, X 19 Glyceryl, R 26 Tridecyl, R 27 It is a compound with 3-methoxypropyl.

[0184] R in general formula (6) is particularly preferred. 25 Hexadecyl, X 19 For hydrogen atoms, R 26 It is pentadecyl, R 27 It is a hydroxyethyl compound (N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecylamide).

[0185] The ceramide-like components represented by general formula (6) are ceramide functional ingredients that can supplement the function of ceramides and improve skin condition (such as moisture content).

[0186]

[0187]

[0188] Component (F) may be used alone or in combination of two or more. Regarding the content, from the viewpoint of improving skin and improving makeup adherence or uneven application when applying foundation, it is preferably 0.01% by mass or more in the total composition, more preferably 0.05% by mass or more, further preferably 0.1% by mass or more, and preferably 5% by mass or less, more preferably 4% by mass or less, and further preferably 3% by mass or less. Furthermore, the content of component (F) in the total composition is preferably 0.01 to 5% by mass, more preferably 0.05 to 4% by mass, and further preferably 0.1 to 3% by mass.

[0189] In this invention, from the viewpoint of the dispersibility of component (A) and its skin-improving effect, the water content in the total composition is preferably 40% by mass or more, more preferably 50% by mass or more, and preferably 85% by mass or less, more preferably 83% by mass or less. Furthermore, the water content in the total composition is preferably 40-85% by mass, more preferably 50-83% by mass.

[0190] In addition to the above-mentioned components, the emulsified composition of the present invention may also contain components commonly used in cosmetics, such as polyols other than those mentioned above, oily components other than those mentioned above, powders, polymers other than those mentioned above, antioxidants, fragrances, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers, cooling agents, etc.

[0191] The emulsified composition of the present invention can be manufactured by conventional methods, or it can be formulated as any of the following: a water-in-oil emulsion composition, an oil-in-water emulsion composition, etc. Furthermore, it can be formulated into dosage forms such as liquid, emulsion, paste, cream, gel, and solid.

[0192] Furthermore, from the viewpoint of improving skin condition, or improving the adherence or uneven application of makeup when applying foundation, as well as enhancing its durability and preservation stability, the emulsifying composition of the present invention is preferably a gel with an α-type structure.

[0193] The α-type structure can be confirmed by X-ray structural analysis. The α-type structure is a hexagonal crystal system, characterized by the lipophilic group being oriented at right angles to the hydrophilic base plane, and a sharp diffraction peak appearing near the Bragg angle of 21–23°.

[0194] The emulsified composition of the present invention is preferably used as an oil-in-water emulsified cosmetic and can be used as a makeup primer, foundation, concealer, blush, eyeshadow, mascara, eyeliner, eyebrow pencil, setting agent, lipstick and other color cosmetics; sunscreen lotion, sunscreen cream and other UV protection cosmetics, etc.

[0195] The cosmetic of the present invention can be applied to the skin, preferably to areas other than the scalp, and more preferably to any part of the face, body, hands, feet, etc.

[0196] The cosmetics of this invention can be suitably used as skin cosmetics such as toners, lotions, emulsions, beauty creams, base makeup materials, sunscreens, masks, and massage cosmetics; and as topical pharmaceuticals such as creams containing various agents. Among these, from the viewpoint of gelling unsaturated fatty acids, improving the capture effect of unsaturated fatty acids, improving skin condition, improving the adherence or uneven application of makeup such as foundation, and enhancing its durability, skin cosmetics are preferred; toners, emulsions, beauty creams, and base makeup materials are more preferred; beauty creams, emulsions, and base makeup materials are even more preferred; and emulsions and base makeup materials are even more preferred. Furthermore, the skin cosmetics do not contain cosmetics for cleansing purposes.

[0197] Regarding the above embodiments, the present invention further discloses the following compositions.

[0198] <1> An emulsified composition comprising the following components (A), (B) and (C):

[0199] (A) A polymer having a cellulose backbone in which 2.4 or more substituents selected from hydroxypropyl, hydroxybutyl and amide groups are substituted on each glucose molecule;

[0200] (B) Liquid glycol;

[0201] (C) One or more compounds selected from sphingosine, salts of sphingosine, sphingosine-like substances, salts of sphingosine-like substances, anionic surfactants and cationic surfactants.

[0202] <2> The emulsified composition as described in <1> above, wherein, in component (A), for the hydroxyl groups of cellulose, there are 2.4 or more substituents selected from hydroxypropyl, hydroxybutyl and amide groups that substitute for each glucose molecule (degree of substitution 2.4 or more), and the degree of substitution is preferably 3 or more, and preferably 10 or less, more preferably 5 or less.

[0203] <3> The emulsified composition as described in <1> or <2> above, wherein the polymer of component (A) preferably does not have substituents other than hydroxypropyl, hydroxybutyl and amide groups.

[0204] <4> The emulsified composition as described in any one of <1> to <3> above, wherein component (A) is preferably hydroxypropyl cellulose.

[0205] <5> The emulsified composition as described in any one of <1> to <4> above, wherein the average molecular weight of component (A) is preferably 40,000 to 2,500,000, more preferably 100,000 to 2,500,000.

[0206] <6> The emulsified composition as described in any one of <1> to <5> above, wherein the content of component (A) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, and 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.

[0207] <7> The emulsified composition as described in any one of <1> to <6> above, wherein the content of component (A) is preferably 0.1 to 6% by mass in the total composition.

[0208] <8> The emulsified composition as described in any one of <1> to <6> above, wherein the content of component (A) is preferably 0.2 to 6% by mass in the total composition.

[0209] <9> The emulsified composition as described in any one of <1> to <8> above, wherein component (B) preferably contains one or more selected from propylene glycol, dipropylene glycol, 1,3-butanediol, propanediol, and pentanediol, and more preferably contains 1,3-butanediol or propanediol.

[0210] <10> The emulsified composition as described in any one of <1> to <9> above, wherein the content of component (B) in the total composition is preferably 2% by mass or more, more preferably 3% by mass or more, even more preferably 4.5% by mass or more, and preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less.

[0211] <11> The emulsified composition as described in any one of <1> to <10> above, wherein 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, and preferably 0.6 or less, more preferably 0.45 or less, and even more preferably 0.35 or less.

[0212] <12> The emulsified composition as described in any one of <1> to <11> above, wherein the mass ratio of component (A) to component (B) (A) / (B) is preferably 0.05 to 0.6.

[0213] <13> The emulsifying composition as described in any one of <1> to <12> above, wherein component (C) is preferably a sphingosine represented by the following general formula (1),

[0214]

[0215] (In formula (1),)

[0216] R 1It refers to a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 4 to 30 carbon atoms that can be replaced by hydroxyl, carbonyl, or amino groups;

[0217] Y represents a methylene, methine, or oxygen atom;

[0218] X 1 X 2 and X 3 Each can be independently represented by a hydrogen atom, a hydroxyl group, or an acetoxy group.

[0219] X 4 This indicates a hydrogen atom, an acetyl group, or a glycerol group, or a bridging oxygen group formed together with an adjacent oxygen atom (where, when Y is methine, X...). 1 With X 2 Either one of them is a hydrogen atom, and the other does not exist; in X 4 When bridging groups are formed, X 3 It does not exist.

[0220] R 2 and R 3 Each can independently represent a hydrogen atom, hydroxyl group, hydroxymethyl group, or acetoxymethyl group;

[0221] Each R can be a hydrogen atom or a formamidinium group, or can represent a straight-chain or branched saturated or unsaturated hydrocarbon group with a total number of carbon atoms of 1 to 8, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy groups.

[0222] 'a' represents a number of 2 or 3;

[0223] The dashed lines can also represent unsaturated bonds.

[0224] More preferably, it is a natural sphingosine or a synthetic compound of the same structure represented by the following general formula (2), and its derivatives (hereinafter also referred to as natural sphingosine), or a sphingosine-like compound represented by the following general formula (3) (hereinafter also referred to as sphingosine-like compound).

[0225]

[0226] (In formula (2),)

[0227] R 7 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 7 to 19 carbon atoms that can be replaced by a hydroxyl group;

[0228] Y1 represents methylene or methine;

[0229] X 5 X 6 and X 7 Each can be used independently to represent a hydrogen atom, a hydroxyl group, or an acetoxy group;

[0230] X 8 This represents a hydrogen atom, or a hydrogen atom that forms a bridging oxygen group with an adjacent oxygen atom (where, when Y1 is a methine, X...). 5 With X 6 Either one of them represents a hydrogen atom, and the other does not exist; in X 8 When bridging groups are formed, X 7 It does not exist.

[0231] R 8 Indicates hydroxymethyl or acetoxymethyl;

[0232] Each R1 can be a hydrogen atom or a formamidinium group, or can represent a straight-chain or branched saturated or unsaturated hydrocarbon group with a total number of carbon atoms of 1 to 4, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy groups.

[0233] 'a' represents a number of 2 or 3;

[0234] The dashed part can also represent an unsaturated bond.

[0235]

[0236] (In formula (3),)

[0237] R 9 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 10 to 22 carbon atoms that can be replaced by a hydroxyl group;

[0238] X 9 Represents a hydrogen atom, acetyl group, or glycerol group;

[0239] Each R2 can be a hydrogen atom or a formamidinium group, or can represent a straight-chain or branched saturated or unsaturated hydrocarbon group with a total number of carbon atoms of 1 to 8, which may have substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy groups.

[0240] 'a' represents a number of 2 or 3.

[0241] <14> The emulsified composition as described in any one of <1> to <12> above, wherein component (C) is preferably a cationic surfactant, more preferably a quaternary ammonium salt type cationic surfactant represented by the following general formula (7),

[0242]

[0243] (In equation (7),)

[0244] R 31 Represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 6 or more carbon atoms.

[0245] R 32 Indicates alkyl groups having 1 to 4 carbon atoms.

[0246] R 33 and R 34 Each of these groups independently represents an alkyl group having 1 to 4 carbon atoms, or a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms.

[0247] AN - (This indicates the formation of a salt anion.)

[0248] Further preferred are dialkyldimethylammonium salts.

[0249] <15> The emulsifying composition as described in any one of <1> to <12> above, wherein component (C) is preferably an anionic surfactant, more preferably an N-acylglutamic acid or its salt having 12 to 24 carbon atoms, a fatty acid salt having 12 to 24 carbon atoms, or a polyoxyethylene alkyl ether phosphate having 12 to 24 carbon atoms, further preferably an N-acylglutamic acid salt having an acyl group having 12 to 24 carbon atoms, more preferably an N-acylglutamic acid salt having 12 to 20 carbon atoms, and even more preferably an N-stearoyl-L-glutamic acid salt.

[0250] <16> The emulsifying composition as described in any one of <1> to <12> above, wherein component (C) is preferably selected from one or more of sphingosine, salts of sphingosine, sphingosine-like substances and salts of sphingosine-like substances, more preferably at least one or more of phytosphingosine, salts of phytosphingosine, sphingosine-like substances (ii), and salts of sphingosine-like substances (ii), and even more preferably at least one or more of phytosphingosine, salts of phytosphingosine, 1-(2-hydroxyethylamino)-3-isostearoxy-2-propanol, and salts of 1-(2-hydroxyethylamino)-3-isostearoxy-2-propanol.

[0251] <17> The emulsified composition as described in any one of <1> to <16> above, wherein the content of component (C) 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, even more preferably 0.3% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less, even more preferably 0.6% by mass or less.

[0252] <18> The emulsified composition as described in any one of <1> to <17> above, wherein the mass ratio of component (A) to component (C) (A) / (C) is preferably 0.1 or more, more preferably 0.5 or more, even more preferably 1 or more, and preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less.

[0253] <19> The emulsified composition as described in any one of <1> to <18> above, wherein it further contains (D) glycerol fatty acid ester.

[0254] <20> The emulsified composition as described in <19> above, wherein component (D) is preferably a glycerol monofatty acid ester, more preferably a glycerol monostearate or a glycerol monobehenate.

[0255] <21> The emulsified composition as described in <19> or <20> above, wherein the content of component (D) 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, and preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less.

[0256] <22> The emulsified composition as described in any one of <1> to <21> above, wherein it further contains (E) a higher alcohol.

[0257] <23> The emulsified composition as described in <22> above, wherein component (E) is preferably a monohydric alcohol with 10 to 24 carbon atoms, more preferably cetyl alcohol, stearyl alcohol, behenyl alcohol, and even more preferably cetyl alcohol and behenyl alcohol.

[0258] <24> The emulsified composition as described in <22> or <23> above, wherein the content of component (E) 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, and preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less.

[0259] <25> The emulsified composition as described in any one of <1> to <24> above, wherein it further contains (F) ceramides.

[0260] <26> The emulsifying composition as described in <25> above, wherein component (F) is preferably a compound represented by general formula (4),

[0261]

[0262] (in equation (4),)

[0263] R 11 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group or hydrogen atom with 4 to 30 carbon atoms that can be replaced by hydroxyl, carbonyl, or amino groups;

[0264] Z represents methylene, methine, or an oxygen atom;

[0265] X 11 X12 and X 13 Each can be independently represented by a hydrogen atom, a hydroxyl group, or an acetoxy group.

[0266] X 14 This represents a hydrogen atom, an acetyl group, or a glycerol group, or a bridging oxygen group formed together with an adjacent oxygen atom (where, when Z is methine, X...). 11 With X 12 Either one of them is a hydrogen atom, and the other does not exist; in X 14 When bridging groups are formed, X 13 It does not exist.

[0267] R 12 and R 13 Each can independently represent a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., hydroxymethyl, hydroxyethyl, etc.), or an acetoxymethyl group;

[0268] R 14 It refers to a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 5 to 60 carbon atoms that can be substituted by hydroxyl, carbonyl, or amino groups and can have ether, ester, or amide bonds in the main chain;

[0269] R 15 Represents a hydrogen atom, or a straight-chain or branched saturated or unsaturated hydrocarbon group having 1 to 30 carbon atoms and substituents selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy (Furthermore, in R... 11 When R is a hydrogen atom and Z is an oxygen atom, 15 Preferably, the hydrocarbon group having a total carbon number of 10 to 30, with substituents selected from hydroxyl, hydroxyalkoxy, alkoxy, and acetoxy, is preferred. Furthermore, in R... 11 When R is a hydrocarbon group, 15 Preferably, it represents a hydrogen atom, or it may have a hydrocarbon group with a total number of 1 to 8 carbon atoms having substituents selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy.

[0270] The dashed part can also represent an unsaturated bond.

[0271] More preferably, natural ceramides or synthetic compounds of the same structure and their derivatives represented by the following general formula (5) (hereinafter also referred to as natural ceramides), or ceramide-like compounds represented by the following general formula (6) (hereinafter also referred to as ceramide-like compounds).

[0272]

[0273] (in equation (5),)

[0274] R 21 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group with 7 to 19 carbon atoms that can be replaced by a hydroxyl group;

[0275] Z1 represents methylene or methine;

[0276] X 15 X 16 and X 17 Each can be used independently to represent a hydrogen atom, a hydroxyl group, or an acetoxy group;

[0277] X 18 Represents a hydrogen atom, or a hydrogen atom that forms a bridging oxygen group with an adjacent oxygen atom (where, when Z1 is a methine, X...). 15 With X 16 Either one of them is a hydrogen atom, and the other does not exist; in X 18 When bridging groups are formed, X 17 It does not exist.

[0278] R 22 Indicates hydroxyalkyl (e.g., hydroxymethyl, hydroxyethyl, etc.) or acetoxymethyl;

[0279] R 23 It represents a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms;

[0280] R 24 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group (preferably alkyl) with 5 to 30 carbon atoms that can be replaced by a hydroxyl group; or a group consisting of a straight-chain or branched saturated or unsaturated fatty acid with 8 to 22 carbon atoms that can be replaced by a hydroxyl group bonded to the ω-terminus of the hydrocarbon group (preferably alkyl).

[0281] The dashed part can also represent an unsaturated bond.

[0282]

[0283] (In formula (6),)

[0284] R 25 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group or hydrogen atom with 10 to 22 carbon atoms that can be replaced by a hydroxyl group;

[0285] X 19 Represents a hydrogen atom, acetyl group, or glycerol group;

[0286] R 26 It represents a straight-chain, branched, or cyclic saturated or unsaturated hydrocarbon group (preferably alkyl) with 5 to 22 carbon atoms that can be replaced by hydroxyl or amino groups; or a group consisting of a straight-chain or branched saturated or unsaturated fatty acid with 8 to 22 carbon atoms that can be replaced by hydroxyl groups bonded to the ω-terminus of the hydrocarbon group (preferably alkyl).

[0287] R27 This represents a hydrogen atom, or a hydrocarbon group (preferably an alkyl group) with a total number of carbon atoms that can be substituted by a hydroxyl, hydroxyalkoxy, alkoxy, or acetoxy group.

[0288] Further preferred are ceramide-like compounds.

[0289] More preferably, it is N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecylamide.

[0290] <27> The emulsified composition as described in <25> or <26> above, wherein the content of component (F) in the whole composition 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, and preferably 5% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less.

[0291] <28> The emulsified composition as described in any one of <1> to <27> above, wherein the water content is preferably 40% by mass or more, more preferably 50% by mass or more, and preferably 85% by mass or less, more preferably 83% by mass or less in the total composition.

[0292] <29> The emulsified composition as described in any one of <1> to <28> above, wherein it is an α-type gel.

[0293] <30> The emulsified composition as described in any one of <1> to <29> above, wherein it is an oil-in-water emulsified cosmetic.

[0294] <31> The emulsified composition as described in any one of <1> to <30> above, wherein it is a skin cosmetic.

[0295] <32> The emulsified composition as described in <25> above, wherein component (F) is N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecylamide (ceramide functional component).

[0296] <33> An emulsifying composition comprising the following components (A), (B) and (C):

[0297] (A) 0.2 to 6% by mass of a polymer having a cellulose backbone in which 2 or more substituents selected from hydroxypropyl, hydroxybutyl and amide groups are substituted on each glucose molecule;

[0298] (B) Liquid glycol;

[0299] (C) One or more compounds selected from sphingosine, salts of sphingosine, sphingosine-like substances, salts of sphingosine-like substances, anionic surfactants and cationic surfactants.

[0300] Example

[0301] Examples 1-16 and Comparative Examples 1-6

[0302] Water-in-oil emulsion cosmetics with the compositions shown in Tables 1 and 2 were manufactured, and their effects on improving the brightness of bare skin, reducing uneven redness on the cheeks, improving the smoothness of bare skin, eliminating uneven makeup application, ensuring good makeup adherence, and evaluating makeup longevity were evaluated. The results are presented in Tables 1 and 2.

[0303] Furthermore, the cosmetics of Examples 2-16 and Comparative Examples 1-6 were confirmed to have formed gels with α-type structures by X-ray structural analysis.

[0304] (Preparation method)

[0305] 1) Mix components (C), (D), (E), and (F) uniformly, heat to 85°C to dissolve them, and mix with the other oil phase components mentioned above that are also heated to 85°C to obtain an oil phase mixture.

[0306] 2) Additionally, the aqueous phase components, excluding components (A) and (B), are mixed at 85°C to make them homogeneous. This mixture is then added to the oil phase mixture of 1) above, which has been preheated to 85°C. The mixture is then stirred at 85°C to make it homogeneous, and then cooled to 25°C while stirring.

[0307] 3) Finally, add the mixture of ingredients (A) and (B) which have been stirred and dissolved evenly at room temperature, and stir until homogeneous to obtain an oil-in-water emulsion cosmetic.

[0308] (Evaluation Method)

[0309] (1) Improved radiance of bare skin:

[0310] Apply 600mg of each cosmetic product twice daily, morning and evening, for 7 consecutive days. Before and after application, evaluate the brightness of clean, bare skin by observing it in a mirror. Five professional evaluators assessed each skin type according to the following criteria, and the results are expressed as the sum of the five scores.

[0311] 5. Significant improvement compared to before continuous use.

[0312] 4. Slight improvement compared to before continuous use.

[0313] 3: No change.

[0314] 2: Slightly worse than before continuous use.

[0315] 1: Worsened compared to before continuous use.

[0316] (2) Improvement of uneven redness on bare skin cheeks:

[0317] Apply 600mg of each cosmetic product twice daily, morning and evening, for 7 consecutive days. Before and after application, evaluate the uneven redness on the cheeks of the cleansed, bare skin by observing in a mirror. Five professional evaluators evaluated each skin type according to the following criteria, and the results are expressed as the sum of the five scores.

[0318] 5. Compared with before continuous use, the uneven redness has been significantly reduced.

[0319] 4. The uneven redness has been slightly reduced compared to before continuous use.

[0320] 3: No change.

[0321] 2: The redness and unevenness have increased slightly compared to before continuous use.

[0322] 1: The redness and unevenness increased compared to before continuous use.

[0323] (3) Improved smoothness of bare skin:

[0324] Each cosmetic product was applied at 600mg twice daily for 7 consecutive days. Smoothness of the skin upon touching cleansed, bare skin was evaluated before and after application. Five professional evaluators assessed each skin according to the following criteria, and the results were expressed as a combined score from the five evaluators.

[0325] 5. Skin is noticeably smoother compared to before continuous use.

[0326] 4. Skin is slightly smoother compared to before continuous use.

[0327] 3: No change.

[0328] 2: Skin is slightly rougher compared to before continuous use.

[0329] 1. Compared to before continuous use, the skin has become noticeably rougher.

[0330] (4) The makeup is applied evenly:

[0331] Five professional evaluators applied 600mg of each cosmetic product to the entire face and evaluated the uneven application of commercially available powder foundation according to the following criteria. The results are expressed as the sum of the five evaluators' scores.

[0332] 5. No uneven coating, relatively uniform.

[0333] 4: There is slight unevenness in the coating, but it is generally uniform.

[0334] 3: Slight unevenness or non-uniformity in coating.

[0335] 2: Uneven or non-uniform coating exists.

[0336] 1. The coating is uneven and not uniform.

[0337] (5) The makeup adheres well to the skin:

[0338] Five professional evaluators applied 600mg of each cosmetic product to their entire face twice daily (morning and evening) for three days. After cleansing their skin and applying regular toner and lotion, they evaluated the adherence of commercially available powder foundation according to the following criteria. The results are represented by the combined scores of the five evaluators.

[0339] 5. The makeup adheres very well.

[0340] 4. The makeup adheres well to the skin.

[0341] 3: The makeup adheres relatively well.

[0342] 2: The makeup adheres poorly.

[0343] 1. The makeup adheres very poorly.

[0344] (6) Maintaining makeup:

[0345] Five professional evaluators applied 600mg of each cosmetic product to the entire face, followed by 60mg of a commercially available powder foundation. The degree of makeup degradation 5 hours after application was evaluated according to the following criteria. The results are represented by the combined scores of the five evaluators.

[0346] 5. Foundation residue remains on the skin.

[0347] 4: Most of the foundation residue remains on the skin.

[0348] 3. A slight residue of foundation remains on the skin.

[0349] 2: Almost no foundation residue remained on the skin.

[0350] 1: No foundation residue remained on the skin.

[0351]

[0352]

[0353] Examples 17-18

[0354] To manufacture water-in-oil emulsion cosmetics (makeup primers) with the composition shown in Table 3.

[0355] All cosmetics obtained can improve the surface roughness (scalyness) of bare skin, or the redness around the pores of bare skin, or uneven redness of bare skin. When applying foundation, they adhere well and do not cause uneven application, resulting in a uniform and long-lasting makeup.

[0356] (Preparation method)

[0357] 1) Mix components (C), (D), (E), and (F) evenly, heat to 85°C to dissolve them, and stir to obtain a mixture.

[0358] 2) Additionally, the aqueous phase components, excluding components (A) and (B), are mixed at 85°C until homogeneous. This mixture is then added to the mixture in 1) above, which has been preheated to 85°C. The mixture is then stirred at 85°C until homogeneous, and cooled to 25°C while stirring.

[0359] 3) In addition, add the mixture of components (A) and (B) which have been stirred and dissolved evenly at room temperature, and stir until homogeneous to obtain a mixture.

[0360] 4) Finally, the mixture of oil phase components other than 1) and powder, which are uniformly mixed at room temperature, is added to the mixture in 3) and stirred to obtain an oil-in-water emulsion cosmetic.

[0361] [Table 3]

[0362]

Claims

1. An emulsified composition, wherein, It contains the following ingredients (A), (B) and (C): (A) A polymer having a cellulose backbone in which three or more but no more than five substituents selected from hydroxypropyl, hydroxybutyl, and amide groups are substituted on each glucose molecule, said polymer having an average molecular weight of 40,000 to 2,500,000 % by mass 0.1 to 6% by mass. (B) Liquid diol 3-12% by mass; (C) 0.1-3% by mass of one or more compounds selected from sphingosine, sphingosine salts, sphingosine-like substances, sphingosine-like salts, N-acylglutamic acid having an acyl group having 12-24 carbon atoms or its salts, and quaternary ammonium salt cationic surfactants. Component (B) contains one or more selected from propylene glycol, dipropylene glycol, 1,3-butanediol, propanediol, and pentanediol. The mass ratio of component (A) to component (C) is 1 to 6.

2. The emulsified composition of claim 1, wherein, Component (A) is hydroxypropyl cellulose.

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

6.

4. The emulsified composition according to claim 1 or 2, wherein, A gel forming an α-type structure.

5. The emulsified composition according to claim 1 or 2, wherein, It further contains (D) glycerol fatty acid esters.

6. The emulsified composition according to claim 1 or 2, wherein, It further contains (E) higher alcohols.

7. The emulsified composition according to claim 1 or 2, wherein, It further contains (F) ceramides.

8. The emulsified composition according to claim 1 or 2, wherein, The content of component (A) in the total composition is 0.2-6% by mass.

9. The emulsified composition according to claim 1 or 2, wherein, The content of component (A) in the total composition is 0.3 to 1.8% by mass.

10. The emulsified composition according to claim 1 or 2, wherein, The average molecular weight of component (A) is 100,000 to 2,500,000.

11. The emulsified composition according to claim 1 or 2, wherein, The content of component (B) in the total composition is 4.5 to 12% by mass.

12. The emulsified composition according to claim 1 or 2, wherein, The content of component (C) in the total composition is 0.2 to 0.6% by mass.

13. The emulsified composition according to claim 1 or 2, wherein, The content of component (B) in the total composition is 4.5 to 12% by mass, and the content of component (C) in the total composition is 0.2 to 0.6% by mass.

14. The emulsified composition according to claim 1 or 2, wherein, The mass ratio of component (A) to component (B) is 0.12 to 0.

35.

15. The emulsified composition according to claim 1 or 2, wherein, Component (C) is a dialkyl dimethylammonium salt.

16. The emulsified composition according to claim 1 or 2, wherein, The component (C) is an N-acylglutamate salt with 12 to 20 carbon atoms.

17. The emulsified composition according to claim 1 or 2, wherein, Component (C) is N-stearoyl-L-glutamate.

18. The emulsified composition according to claim 1 or 2, wherein, Component (C) is one or more selected from sphingosine, salts of sphingosine, sphingosine-like substances and salts of sphingosine-like substances.

19. The emulsified composition according to claim 1 or 2, wherein, Component (C) is one or more selected from phytosphingosine, salts of phytosphingosine, 1-(2-hydroxyethylamino)-3-isostearoxy-2-propanol, and salts of 1-(2-hydroxyethylamino)-3-isostearoxy-2-propanol.

20. The emulsified composition according to claim 1 or 2, wherein, The content of component (C) in the total composition is 0.3 to 0.6% by mass.

21. The emulsified composition of claim 5, wherein, Component (D) is selected from one or more of glyceryl monostearate and glyceryl monosorbate.

22. The emulsified composition of claim 5, wherein, The content of component (D) in the total composition is 0.1 to 5% by mass.

23. The emulsified composition of claim 5, wherein, The content of component (D) in the total composition is 0.5 to 2% by mass.

24. The emulsified composition of claim 6, wherein, The component (E) is a monohydric alcohol with 10 to 24 carbon atoms.

25. The emulsified composition of claim 6, wherein, Component (E) is cetyl alcohol or behenyl alcohol.

26. The emulsified composition of claim 6, wherein, The content of component (E) in the total composition is 0.1 to 5% by mass.

27. The emulsified composition of claim 6, wherein, The content of component (E) in the total composition is 0.5 to 2% by mass.

28. The emulsified composition according to claim 1 or 2, wherein, It further contains (F) ceramides.

29. The emulsified composition of claim 28, wherein, Component (F) is N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecylamide, which is a ceramide functional component.

30. The emulsified composition of claim 28, wherein, The content of component (F) in the total composition is 0.01 to 5% by mass.

31. The emulsified composition of claim 28, wherein, The content of component (F) in the total composition is 0.1 to 3% by mass.

32. The emulsified composition according to claim 1 or 2, wherein, The water content in the total composition is 40-85% by mass.

33. The emulsified composition according to claim 1 or 2, wherein, It is an oil-in-water emulsion cosmetic.

34. The emulsified composition according to claim 1 or 2, wherein, For skin cosmetics.

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