Aerosol type skin or hair cosmetic

Abstract

To provide a sulfate surfactant-free aerosol type skin or hair cosmetic which exhibits good foaming performance when applied, imparts smooth touch feeling to hair when rinsed, effectively suppresses elution of intercellular lipids and can maintain hair in a healthy state while limiting the content of an amphoteric surfactant.SOLUTION: There is provided an aerosol type skin or hair cosmetic which contains a stock solution (X) and a propellant (Y) containing carbon dioxide, wherein the stock solution contains no anionic surfactant containing a sulfate groups, but contains a component (a): an anionic surfactant containing no sulfate group, a component (b): one or two more polymers selected from an acrylic cationic polymer and an acrylic amphoteric polymer and a component (c): a nonionic surfactant represented by a specific formula (cf): A-[(C2H4O)n-Rf]m, and the content of an amphoteric surfactant is less than 3 mass%.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an aerosol type skin or hair cosmetic preparation. [Background technology]

[0002] In cosmetics for cleansing the skin or hair, it is known that it is useful to use surfactants containing sulfate groups, such as sodium lauryl sulfate and sodium laureth sulfate, so-called sulfate surfactants, in order to ensure good cleansing power and foaming performance. On the other hand, some consumers believe that such sulfate surfactants may lack mildness to the skin or hair, and therefore, there is a tendency for some consumers to desire cosmetics that are substantially free of sulfate surfactants, so-called sulfate surfactant-free cosmetics, and various developments have been made.

[0003] For example, Patent Document 1 discloses a shampoo composition that contains a specific amount of cationic polymer and 20% to 40% by weight of a surfactant such as acyl glutamate in a specific weight ratio, and is substantially free of sulfate surfactant, and attempts to stabilize the composition. Patent Document 2 discloses a skin or hair cleanser composition that contains an amphoteric surfactant, a specific nonionic surfactant, and an anionic surfactant in a specific mass ratio, and ensures mildness to hair by suppressing the elution of intercellular lipids while ensuring foaming properties. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2020-536959 [Patent Document 2] Patent Publication No. 2022-73255 Summary of the Invention [Problem to be solved by the invention]

[0005] However, compared to cleansers containing sulfate-based surfactants, it is difficult to ensure good foaming, cleaning properties, and stability in such sulfate-based surfactant-free cosmetics, so they tend to contain a large amount of surfactants other than sulfate-based surfactants. For example, the technology described in Patent Document 1 increases the total amount of surfactants, which may cause excessive irritation to the skin and hair. Furthermore, even the technology described in Patent Document 2 cannot sufficiently reduce the content of amphoteric surfactants, which are said to be more likely to elute intercellular lipids than anionic surfactants, and there is still room for improvement.

[0006] In other words, the present invention relates to a sulfate-based surfactant-free aerosol-type skin or hair cosmetic composition which, while limiting the content of amphoteric surfactant, exhibits good foaming performance when applied, imparts a smooth feel to the skin or hair when rinsing, and effectively inhibits the elution of intercellular lipids (cholesterol), thereby maintaining a healthy condition. [Means for solving the problem]

[0007] Therefore, the present inventors conducted various studies and found that an aerosol type skin or hair cosmetic composition can be obtained which contains a concentrate (X) and a propellant (Y) containing carbon dioxide, and which, while the concentrate (X) does not contain an anionic surfactant containing a sulfate group, contains an anionic surfactant not containing a sulfate group, a specific polymer, and a specific nonionic surfactant, and which limits the content of amphoteric surfactant, thereby producing excellent foaming and effectively suppressing the elution of intercellular lipids (cholesterol), thereby maintaining the skin and hair in a healthy state.

[0008] Therefore, the present invention provides an aerosol-type skin or hair cosmetic composition comprising a concentrate (X) and a propellant (Y) containing carbon dioxide, The stock solution (X) does not contain an anionic surfactant containing a sulfate group and has the following components (a) to (c): (a) Anionic surfactants that do not contain sulfate groups (b) one or more polymers selected from acrylic cationic polymers and acrylic amphoteric polymers (c) The following formula (c f ) Nonionic surfactants A-[(C2H4O) n -R] m (c f ) (In the formula, A represents a dihydric or higher polyol, (C2H4O) n -R forms an ether bond with the OH group of A. Each R may be the same or different and represents H, or a C1-C24 alkyl group, alkenyl group, or acyl group which may be substituted with OH or attached with EO, and at least one of the R's is a C8-C24 acyl group which may be substituted with OH or attached with EO. n represents an integer of 5 or more, and m represents an integer of 2 or more. The present invention provides an aerosol-type skin or hair cosmetic composition comprising: a component (a) and a component (b); a mass ratio ((a) / (b)) of the content of component (a) to the content of component (b) is 10 or more and 60 or less; and the content of an amphoteric surfactant is 2.5 mass% or less. Effect of the Invention

[0009] The aerosol type skin or hair cosmetic composition of the present invention produces excellent foaming when applied to the skin or hair, and can impart a smooth feel to the skin or hair when rinsed. It can also effectively and efficiently inhibit the elution of intercellular lipids (cholesterol), contributing to maintaining the skin or hair in a healthy state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described in detail below. The "smooth feel on hair when rinsing" provided by the aerosol type skin or hair cosmetic of the present invention means that after applying the aerosol type skin or hair cosmetic of the present invention to hair, when it is rinsed, the hair feels soft without feeling any sticking or tightness, and the cosmetic can be washed away smoothly.

[0011] The aerosol type hair cosmetic composition of the present invention is meant to include fiber cosmetics for head accessories. That is, "hair" mainly means human hair, but also includes hair cut off from the human head. "Head decoration products" means, for example, hair wigs, hairpieces, weaving, hair extensions, braided hair, hair accessories, doll hair, etc., and "fibers for head decoration products" means fibers used for such head decoration products.

[0012] The concentrate (X) contained in the aerosol type skin or hair cosmetic composition of the present invention does not contain an anionic surfactant containing a sulfate group. Specific examples of such anionic surfactants containing a sulfate group include alkyl or alkenyl sulfates such as lauryl sulfate, myristyl sulfate, palmityl sulfate, stearyl sulfate, octyl sulfate, and capryl sulfate; polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, and polyoxyalkylene alkyl phenyl ether sulfates. Examples of these salts include alkali metal salts such as sodium and potassium; alkaline earth metal salts such as calcium and magnesium; ammonium salts; organic amine salts such as monoethanolamine, diethanolamine, triethanolamine, and triisopropanolamine; and basic amino acids such as arginine salts, lysine salts, histidine salts, and ornithine salts.

[0013] The concentrate (X) contained in the aerosol type skin or hair cosmetic of the present invention contains, as component (a), an anionic surfactant that does not contain a sulfate group. By using such component (a) in combination with components (b) and (c) described below, it is possible to realize the development of excellent foaming when applied to the skin or hair, and to impart smoothness to the skin or hair after rinsing.

[0014] Examples of component (a) include one or more selected from acylamino acid salts such as acyl glutamates, acylaspartates, acyl sarcosines, and acylalanines; acyltaurates such as acyl methyl taurines; polyoxyalkylene alkyl ether carboxylates such as polyoxyethylene lauryl ether acetate; alkyl sulfonates such as alkyl benzene sulfonates, α-olefin sulfonates, internal olefin sulfonic acids, and hydroxyalkane sulfonates; monoalkyl or dialkyl sulfosuccinates; fatty acid salts such as oleates and laurates; alkyl phosphates such as alkyl phosphates; fatty acid ester salts such as higher fatty acid sulfonated monoglyceride salts and isethionate fatty acid esters; and polyoxyethylene monoalkyl phosphates. Examples of salts of component (a) include alkali metal salts such as sodium and potassium; alkaline earth metal salts such as calcium and magnesium; ammonium salts; organic amine salts such as monoethanolamine, diethanolamine, triethanolamine, and triisopropanolamine; and basic amino acids such as arginine salts, lysine salts, histidine salts, and ornithine salts. Among such components (a), from the viewpoints of providing good foaming, improving the smoothness of hair during rinsing, and effectively suppressing the elution of intercellular lipids (cholesterol), one or more selected from acylamino acid salts, acyltaurine salts, polyoxyalkylene alkyl ether carboxylates, and alkylsulfonates are preferred, one or more selected from acylamino acid salts, polyoxyalkylene alkyl ether carboxylates, and alkylsulfonates are more preferred, and one or more selected from acylamino acid salts and alkylsulfonates are even more preferred.

[0015] More specifically, the acylamino acid salt and acyltaurine salt are composed of acylamino acids and acyltaurines, and the acyl groups are derived from saturated or unsaturated straight-chain or branched fatty acids or mixed fatty acids thereof, preferably from straight-chain fatty acids or mixed fatty acids of straight-chain fatty acids, preferably from acyl groups having 6 to 22 carbon atoms, more preferably from acyl groups having 10 to 20 carbon atoms, and even more preferably from acyl groups having 12 to 18 carbon atoms. Such acyl groups are preferably one or more selected from a capryloyl group, a lauroyl group, a myristoyl group, a palmitoyl group, and a stearoyl group, and more preferably from one or more selected from a lauroyl group and a myristoyl group.

[0016] The amino acid moiety constituting the acylamino acid salt is preferably one or more selected from glutamic acid, aspartic acid, glycine, alanine, threonine, methylalanine, sarcosine, lysine and arginine, which may be in the D-form, the L-form or a mixture of the D-form and the L-form. Among these, from the viewpoint of effectively suppressing the elution of intercellular lipids (cholesterol), glutamic acid, sarcosine and alanine are more preferable, and glutamic acid and sarcosine are even more preferable. As such an acylamino acid salt, from the viewpoints of exhibiting good foaming, improving the smoothness of hair during rinsing, and effectively suppressing the elution of intercellular lipids (cholesterol), one or more types selected from lauroyl glutamate, myristoyl glutamate, lauroyl sarcosine salt, myristoyl sarcosine salt, lauroyl alanine salt, and lauroyl methyl alanine salt are preferred, and one or more types selected from lauroyl glutamate, lauroyl sarcosine salt, and lauroyl methyl alanine salt are more preferred.

[0017] As such an acyltaurine salt, from the viewpoint of improving good foaming and smoothness of hair during rinsing, one or more types selected from lauroyl methyl taurine salt, myristoyl methyl taurine salt, palmitoyl methyl taurine salt, etc. are preferred, one or two types selected from lauroyl methyl taurine salt and myristoyl methyl taurine salt are more preferred, and lauroyl methyl taurine salt is even more preferred.

[0018] Examples of polyoxyalkylene alkyl ether carboxylates include polyoxyalkylene alkyl ether acetates, etc. The number of carbon atoms in the alkyl group constituting the polyoxyalkylene alkyl ether carboxylates is preferably 8 to 22, more preferably 8 to 18, and even more preferably 10 to 18. The average number of moles of ethylene oxide added is preferably 0.5 to 5, and more preferably 1 to 4. As such polyoxyalkylene alkyl ether carboxylates, from the viewpoints of improving good foaming and smoothness of hair during rinsing, polyoxyalkylene alkyl ether acetates are preferred, and one or more selected from polyoxyethylene lauryl ether acetate, polyoxyethylene myristyl ether acetate, and polyoxyethylene palmityl ether acetate are more preferred, with polyoxyethylene lauryl ether acetate being even more preferred.

[0019] The alkyl sulfonate may be one or more selected from alkylbenzene sulfonate, hydroxyalkane sulfonate, α-olefin sulfonate, internal olefin sulfonate, etc. The number of carbon atoms constituting the alkyl sulfonate is preferably 10 to 22, more preferably 12 to 18, or may be a mixture thereof. As such alkyl sulfonates, from the viewpoint of improving good foaming and smoothness of hair during rinsing, one or more selected from α-olefin sulfonates and internal olefin sulfonates are preferred, and α-olefin sulfonates are more preferred.

[0020] From the viewpoint of ensuring good foaming during application, the content of component (a) in the concentrate (X) is preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less. The content of component (a) in the concentrate (X) is 1 to 20% by mass, more preferably 3 to 15% by mass, even more preferably 5 to 15% by mass.

[0021] The concentrate (X) contained in the aerosol type skin or hair cosmetic composition of the present invention contains, as component (b), one or more polymers selected from acrylic cationic polymers and acrylic amphoteric polymers. The acrylic polymer is a polymer having any monomer unit selected from (meth)acrylic acid, esters of (meth)acrylic acid, amides of (meth)acrylic acid, substituted products thereof, and mixtures thereof. The cationic polymer is preferably a polymer having cationic groups and substantially no anionic groups. "Substantially no anionic groups" means that the molar amount of anionic groups relative to cationic groups is preferably 0.1% or less. The amphoteric polymer is preferably a polymer having a cationic group and an anionic group, and is preferably a polymer that is positively charged as a total charge of the polymer at the pH of the original solution (X). Such a pH can be measured with a pH meter.

[0022] In this specification, the term "cationic group" means a cationic group or a group that can be ionized to become a cationic group, and specific examples thereof include a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary ammonium group. The term "anionic group" refers to an anionic group or a group that can be ionized to become an anionic group, specifically, at least one selected from the group consisting of acidic groups such as a carboxy group, a sulfonic acid group, and a phosphoric acid group, preferably at least one selected from a carboxy group and a sulfonic acid group, more preferably a carboxy group. At least a part of the anionic group may be neutralized to be in the form of a salt.

[0023] By containing component (b) in the concentrate (X), excellent foaming is ensured when applied even in an environment where the inclusion of amphoteric surfactants is restricted, and in combination with component (a), it is possible to impart smoothness to the skin or hair when rinsing without excessively thickening the cosmetic preparation.

[0024] Specific examples of component (b) include one or more selected from diallyl quaternary ammonium salt-acrylamide copolymer (polyquaternium-7), diallyl quaternary ammonium salt-acrylic acid copolymer (polyquaternium-22), diallyl quaternary ammonium salt-acrylamide-acrylic acid copolymer (polyquaternium-39), methacrylamide alkyl quaternary ammonium salt-acrylic acid-acrylic acid ester copolymer (polyquaternium-47), methacrylamide alkyl quaternary ammonium salt-acrylic acid-acrylamide copolymer (polyquaternium-53), and copolymers obtained by copolymerizing a monomer mixture containing the following monomers (b1), (b2), and (b3).

[0025] Monomer (b1) The monomer (b1) is at least one selected from the vinyl monomers represented by the following formula (1).

[0026] [ka]

[0027] (In formula (1), R 1 represents a hydrogen atom or a methyl group, R 2represents a hydrogen atom, a linear or branched alkyl or alkenyl group having 1 to 4 carbon atoms, R 3 represents a linear or branched alkyl or alkenyl group having 1 to 4 carbon atoms.

[0028] Monomer (b2) The monomer (b2) is at least one selected from the vinyl monomers represented by the following formula (2).

[0029] [ka]

[0030] (In formula (2), R 1 is R in formula (1). 1 is synonymous with R 4 and R 5 each independently represents an alkyl or alkenyl group having 1 to 4 carbon atoms; R 6 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. 1 represents a -O-, -NH-, -CH2- or -O-CH2CH(OH)- group. 1 is Y 1 represents a single bond or a linear or branched divalent saturated hydrocarbon group having 1 to 3 carbon atoms when Y 1 When Q is other than -CH2-, it represents a linear or branched divalent saturated hydrocarbon group having 1 to 4 carbon atoms. - indicates the conjugate base of the acid.)

[0031] Monomer (b3) The monomer (b3) is a crosslinkable monomer having two or more reactive unsaturated groups. As the monomer (b3), ethylene glycol di(meth)acrylate is preferable. A specific example of a copolymer obtained by copolymerizing a monomer mixture containing such monomers (b1), (b2) and (b3) is N,N-dimethylaminoethyl diethyl methacrylate sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer (Polyquaternium-52).

[0032] From the viewpoint of obtaining good foaming in a system that does not contain an anionic surfactant containing a sulfate group, the component (b) preferably has a cationization density of 5.5 meq / g or less, and more preferably 4.5 meq / g or less. Furthermore, from the viewpoints of producing good foam during application and improving smoothness to the skin or hair during rinsing, one or more selected from one or more selected from methacrylamide alkyl quaternary ammonium salt-acrylic acid-acrylic acid ester copolymer (polyquaternium-47), methacrylamide alkyl quaternary ammonium salt-acrylic acid-acrylamide copolymer (polyquaternium-53), and N,N-dimethylaminoethyl diethyl methacrylate sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer (polyquaternium-52) are preferred, and N,N-dimethylaminoethyl diethyl methacrylate sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer (polyquaternium-52) is more preferred.

[0033] Examples of commercially available products include MERQUAT 550, MERQUAT 740 (INCI name: Polyquaternium-7, diallyl quaternary ammonium salt-acrylamide copolymer, manufactured by Lubrizol Advanced Materials), MERQUAT 280N (INCI name: Polyquaternium-22, diallyl quaternary ammonium salt-acrylic acid copolymer, manufactured by Lubrizol Advanced Materials), MERQUAT 3331PR (INCI name: Polyquaternium-39, acrylamide-acrylic acid-dimethyl diallyl ammonium chloride copolymer liquid, manufactured by Lubrizol Advanced Materials), MERQUAT 2001 (INCI name: Polyquaternium-47, methacrylamide alkyl quaternary ammonium salt-acrylic acid-acrylic acid ester copolymer, manufactured by Lubrizol Advanced Materials), MERQUAT 2003PR (INCI name: Polyquaternium-53, a copolymer of quaternary ammonium salts consisting of acrylic acid, acrylamide and methacrylamide propyltrimonium chloride, manufactured by Lubrizol Advanced Materials), and Sofcare KG-101W-E (INCI name: Polyquaternium-52, N,N-dimethylaminoethyl diethyl methacrylate sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer, manufactured by Kao Corporation).

[0034] The content of component (b) in the original solution (X) is preferably 0.10% by mass or more, more preferably 0.15% by mass or more, even more preferably 0.20% by mass or more, preferably 0.75% by mass or less, more preferably 0.50% by mass or less, even more preferably 0.40% by mass or less, and even more preferably 0.30% by mass or less, from the viewpoint of imparting smoothness to hair during rinsing and from the viewpoint of effectively suppressing the elution of intercellular lipids (cholesterol). The content of component (b) in the original solution (X) is 0.10 to 0.75% by mass, more preferably 0.10 to 0.50% by mass, 0.15 to 0.40% by mass, and even more preferably 0.20 to 0.30% by mass.

[0035] The mass ratio ((a) / (b)) of the content of component (a) to the content of component (b) in the original solution (X) is, from the viewpoint of ensuring good foaming upon application while effectively imparting smoothness to hair upon rinsing, 10 or more, preferably 15 or more, more preferably 20 or more, and 60 or less, preferably 50 or less, and more preferably 40 or less. The mass ratio ((a) / (b)) of the content of component (a) to the content of component (b) in the original solution (X) is 10 or more and 60 or less, preferably 15 to 50, and more preferably 20 to 40.

[0036] The concentrate (X) contained in the aerosol type skin or hair cosmetic composition of the present invention contains, as component (c), a compound represented by the following formula (c f ) is a nonionic surfactant. A-[(C2H4O) n -R f ] m (c f ) (In the formula, A represents a dihydric or higher polyol, (C2H4O) n -R f is formed by forming an ether bond with the OH group of A. f may be the same or different, and each represents H, or a C1-C24 alkyl group, alkenyl group, or acyl group which may be substituted with OH or may be added with ethylene oxide (hereinafter also referred to as EO), and at least one R f is a C8 to C24 acyl group which may be substituted with OH or added with EO. n is an integer of 5 or more, and m is an integer of 2 or more. By including such component (c), in combination with component (b), excellent foaming can be ensured upon application, even in environments where the inclusion of amphoteric surfactants is restricted, and the elution of intercellular lipids (cholesterol) can be effectively suppressed.

[0037] Formula (c fIn the above, A is a polyol having at least two valences, preferably a polyol having at least two valences and at most six valences, more preferably a polyol having at least three valences and at most six valences, from the viewpoint of improving foaming during application in an environment in which the content of amphoteric surfactants is restricted. Specific examples of A include divalent polyols (ethylene glycol, etc.), trivalent polyols (glycerin, trimethylolpropane, castor oil, hydrogenated castor oil, etc.), tetravalent polyols (erythritol, pentaerythritol, sorbitan, monomethylglucose, etc.), pentavalent polyols (glucose, xylitol, etc.), and hexavalent polyols (mannitol, sorbitol, iditol, etc.). Among these A, from the viewpoint of easy availability on the market and from the viewpoint of improving foaming during application under an environment in which the content of amphoteric surfactants is restricted, one or more selected from glycerin, trimethylolpropane, castor oil, hydrogenated castor oil, sorbitan, monomethylglucose, and sorbitol are preferred, and one or more selected from sorbitan, castor oil, hydrogenated castor oil, and monomethylglucose are more preferred.

[0038] Formula (c f In the above formula, n is an integer of 5 or more, preferably an integer of 5 to 200, and more preferably an integer of 5 to 180, from the same viewpoint as above. Formula (c f ), m R f may be the same or different, and each represents H, or a C1-C24 alkyl group, alkenyl group, or acyl group which may be substituted with OH or added with EO, and at least one R f m R is a C8 to C24 acyl group which may be substituted with OH or may be attached with EO. f is preferably H, or a C1-C20 alkyl group, alkenyl group, or acyl group which may be substituted with OH or added with EO, and at least one R f is a C10 to C20 acyl group which may be substituted with OH or may be added with EO. f More preferably, R represents H, or a C1 to C18 alkyl group, alkenyl group, or acyl group which may be substituted with OH or added with EO, and at least one Rf is a C12 to C18 acyl group which may be substituted with OH or added with EO. In addition, R f When EO is added, when the number of moles of EO added is l, the sum of l and n (l+n) is preferably an integer of 6 or more, more preferably an integer of 6 to 200, and further preferably an integer of 6 to 180, from the same viewpoint as above. Formula (c f In the above formula, m is an integer of 2 or more, preferably an integer of 2 or more and 6 or less, and more preferably an integer of 3 or more and 6 or less, from the same viewpoint as above.

[0039] Specific examples of the component (c) include polyoxyethylene sorbitan fatty acid esters (represented by the above formula (c)) such as polyoxyethylene sorbitan laurate, polyoxyethylene sorbitan myristate, polyoxyethylene sorbitan palmitate, polyoxyethylene sorbitan stearate, polyoxyethylene sorbitan oleate, and polyoxyethylene sorbitan triisostearate. f ), where A is sorbitan and m = 4); Polyoxyethylene sorbitol fatty acid esters (such as polyoxyethylene sorbitol tetraoleate, polyoxyethylene sorbitol tetraisostearate, polyoxyethylene sorbitol isostearate, and polyoxyethylene sorbitol pentaoleate (the above formula (c f ), where A is sorbitol and m=6); Castor oils such as polyoxyethylene hydrogenated castor oil, mono fatty acid polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil succinic acid, and polyoxyethylene castor oil (represented by the above formula (c f ) where A is castor oil or hydrogenated castor oil, m=3); Polyoxyethylene methyl glycol fatty acid esters such as polyoxyethylene methyl glucose triisostearate (the above formula (c f ), where A is 1-O-methyl-D-glucose, m=4); Polyoxyethylene glycerin fatty acid esters (the above formula (c) such as polyoxyethylene methylglyceryl triisostearate f ), where A is glycerin and m=3); Fatty acid polyoxyethylene trimethylolpropane (the above formula (c)) such as PEG trimethylolpropane distearate and PEG trimethylolpropane tristearate f ) in which A is trimethylolpropane, m=3) can be mentioned as one or more selected from the group consisting of:

[0040] Among these components (c), from the viewpoints of ensuring excellent foaming during application and effectively suppressing the elution of intercellular lipids (cholesterol), one or more selected from polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene methyl glycol fatty acid esters, and polyoxyethylene glycerin fatty acid esters are preferred, and one or more selected from polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene methyl glycol fatty acid esters are preferred. Two or more types are more preferred, and one or more types selected from polyoxyethylene sorbitan oleate, polyoxyethylene sorbitan triisostearate, polyoxyethylene methylglucose triisostearate, and polyoxyethylene hydrogenated castor oil are even more preferred, one or more types selected from PEG-6 sorbitan oleate, PEG-40 hydrogenated castor oil, PEG-160 sorbitan triisostearate, and PEG-120 methylglucose trioleate are even more preferred, and one or two types selected from PEG-6 sorbitan oleate and PEG-40 hydrogenated castor oil are even more preferred.

[0041] From the viewpoint of ensuring excellent foaming during application while effectively suppressing the elution of intercellular lipids (cholesterol), the content of component (c) in the original solution (X) is preferably 0.5% by mass or more, more preferably 1% by mass or more, even more preferably 1.5% by mass or more, preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, and more preferably 3% by mass or less. The content of component (c) in the original solution (X) is 0.5 to 10% by mass, more preferably 1 to 7% by mass, even more preferably 1.5 to 5% by mass, and even more preferably 1.5 to 3% by mass.

[0042] The mass ratio ((b) / (c)) of the content of component (b) to the content of component (c) in the original solution (X) is preferably 0.01 or more, more preferably 0.05 or more, even more preferably 0.08 or more, preferably 0.5 or less, more preferably 0.3 or less, and even more preferably 0.2 or less, from the viewpoints of ensuring good foaming during application, effectively imparting smoothness to hair during rinsing, and effectively suppressing the elution of intercellular lipids (cholesterol). The mass ratio ((b) / (c)) of the content of component (b) to the content of component (c) in the original solution (X) is preferably 0.01 or more and 0.5 or less, more preferably 0.01 to 0.3, even more preferably 0.05 to 0.2, and even more preferably 0.08 to 0.2.

[0043] In the aerosol type skin or hair cosmetic composition of the present invention, the content of the amphoteric surfactant in the concentrate (X) is 2.5 mass% or less from the viewpoint of effectively suppressing the elution of intercellular lipids (cholesterol) into the skin or hair. Examples of such amphoteric surfactants include acetate betaine type surfactants such as lauryl dimethylamino acetate betaine; amine oxide type surfactants such as lauryl dimethylamine oxide; imidazolinium betaine type surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine; amidobetaine type surfactants such as coconut oil fatty acid amidopropyl betaine and lauric acid amidopropyl betaine; and sulfobetaine type surfactants such as lauryl sulfobetaine and lauryl hydroxysulfobetaine.

[0044] In the aerosol type skin or hair cosmetic composition of the present invention, the content of the amphoteric surfactant in the concentrate (X) is 2.5% by mass or less, preferably 2.0% by mass or less, more preferably 1.5% by mass or less, even more preferably 1.0% by mass, even more preferably 0.5% by mass or less, or even more preferably 0.1% by mass or less, from the viewpoint of effectively suppressing the elution of intercellular lipids (cholesterol) into the skin or hair. Alternatively, it is preferable that the concentrate (X) of the present invention does not substantially contain any amphoteric surfactant.

[0045] In the aerosol-type skin or hair cosmetic composition of the present invention, from the viewpoint of effectively suppressing the elution of intercellular lipids (cholesterol) into the skin or hair and from the viewpoint of preventing corrosion of the aerosol container, it is preferable that the content of chloride ions in the concentrate (X) is limited. The content of chloride ions in the raw solution (X) is preferably 0.2% by mass or less, more preferably 0.1% by mass or less, and further preferably 0.05% by mass or less. The chloride ion content is measured by the method described in the Examples.

[0046] The concentrate (X) preferably further contains water. This allows each component of the concentrate (X) to be dispersed or dissolved well, and the aerosol type skin or hair cosmetic of the present invention to be easily spread to the application site, promoting its permeability, and allowing the desired effects to be fully exhibited. Examples of water include ion-exchanged water and distilled water. The content of water in the raw solution (X) is preferably 30% by mass or more, more preferably 50% by mass or more, even more preferably 50% by mass or more, and preferably 95% by mass or less. The content of water in the raw solution (X) is preferably 30 to 95% by mass, more preferably 50 to 95% by mass, and even more preferably 70 to 95% by mass.

[0047] In addition to the above-mentioned components, the concentrate (X) may contain, as appropriate, ingredients that are usually blended into skin or hair cosmetics, such as surfactants, antioxidants, oils, antidandruff agents, vitamins, bactericides, anti-inflammatory agents, preservatives, chelating agents, moisturizers, pearl agents, ceramides, fragrances, ultraviolet absorbers, pH adjusters, etc., other than the above-mentioned components, so long as the effects of the present invention are not impaired.

[0048] The viscosity of the concentrate (X) at 30°C is preferably 1 to 1000 mPa·s, more preferably 3 to 800 mPa·s, and even more preferably 5 to 550 mPa·s, from the viewpoint of ensuring good dischargeability from an aerosol container during use. The viscosity of the original solution (X) at 30° C. means a value measured by a Brookfield viscometer, specifically, measured by the method described in the examples.

[0049] From the viewpoint of ensuring the storage stability of the original solution (X), the pH of the original solution (X) at 25°C is preferably 4 to 8, more preferably 5 to 7, and even more preferably 5.5 to 6.5, in terms of a value when the original solution (X) is made into a 5 mass% aqueous solution. The pH value at 25° C. when the stock solution (X) is made into a 5% by mass aqueous solution is specifically measured by the method described in the Examples.

[0050] The aerosol-type skin or hair cosmetic of the present invention contains the above-mentioned concentrate (X) and a propellant (Y) containing carbon dioxide. That is, the aerosol-type skin or hair cosmetic of the present invention is a cosmetic in the form of an aerosol spray, aerosol foam, etc., in which the above-mentioned concentrate (X) and the propellant (Y) are enclosed in an aerosol container. This allows the cosmetic content to be easily expelled from the container by simply spraying when applied, effectively increasing the ease of spreading to the application site and enabling excellent foaming to be generated.

[0051] Examples of aerosol containers that can be used include known pressure-resistant containers made of metal or plastic, or double-structure containers in which an inner bag is housed inside a pressure-resistant container. In the double-structure container, the concentrate (X) is filled into the inner bag, and the propellant (Y) is filled between the pressure-resistant container and the inner bag. The method of preparing the aerosol formulation is not particularly limited. For example, the aerosol formulation can be prepared by filling the concentrate (X) into a pressure-resistant container that constitutes an aerosol container, attaching a valve, and then filling the propellant (Y) through the valve.

[0052] The propellant (Y) contains carbon dioxide, and may contain other liquefied gases such as nitrogen, propane, normal butane, isobutane, and mixtures thereof such as liquefied petroleum gas (LPG), dimethyl ether, and isopentane. The content of carbon dioxide in the propellant (Y) is preferably 50% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, still more preferably 90% by mass or more, and even more preferably 100% by mass, from the viewpoints of exhibiting good ejection properties, enabling the exhibiting of excellent foaming, and improving the permeability of the active ingredient into the skin or hair. That is, the propellant (Y) preferably contains only carbon dioxide.

[0053] The internal pressure of the aerosol container after being filled with the propellant (Y) at 25° C. is preferably 0.1 to 1.3 MPa, more preferably 0.3 to 1.0 MPa, from the viewpoint of obtaining an appropriate spray speed.

[0054] In the aerosol-type skin or hair cosmetic composition of the present invention, from the viewpoint of enabling the expression of excellent foaming while maintaining good dischargeability, the mass ratio of concentrate (X) to propellant (Y) ((X):(Y)) is preferably 95:5 to 99:1, and more preferably 97:3 to 98.5:1.5.

[0055] From the viewpoint of exhibiting excellent foaming while effectively imparting a smooth feel to the application site, the aerosol-type skin or hair cosmetic composition of the present invention is preferably a hair cosmetic composition, and more preferably used as a hair cleanser.

[0056] The aerosol type skin or hair cosmetic composition of the present invention is applied to the skin, or hair or fibers for head ornament products. Here, the fibers for head accessories may be either naturally occurring fibers or synthetic fibers, and naturally occurring fibers are preferred.

[0057] Naturally derived fibers refer to fibers (excluding human hair) taken from natural animals and plants, or fibers artificially produced using proteins, polysaccharides, etc. as raw materials. Among such naturally derived fibers, preferred are fibers artificially produced using animal hair, keratin, collagen, casein, and proteins such as proteins derived from soybeans, peanuts, corn, silk, etc., or polysaccharides as raw materials, more preferred are regenerated protein fibers made from keratin, collagen, casein, soybean protein, peanut protein, corn protein, silk protein (e.g., silk fibroin), etc., even more preferred are regenerated protein fibers such as regenerated collagen fibers made from collagen, or regenerated silk fibers made from silk fibroin, and still more preferred are regenerated collagen fibers. Regenerated collagen fibers can be produced by known techniques. The composition of regenerated collagen fibers does not have to be 100% collagen, and may contain natural polymers, synthetic polymers, additives, etc. for quality improvement. Furthermore, regenerated collagen fibers may be post-processed or post-treated. Generally, the form of regenerated collagen fibers is preferably filaments taken out from a bobbin-wound or boxed state. In addition, in the manufacturing process of regenerated collagen fibers, filaments coming out of the drying process can be directly used.

[0058] In addition, the synthetic fiber may be a fiber containing a synthetic resin as a main component. From the viewpoint of ease of production of the synthetic fiber and of obtaining a texture similar to that of hair, the synthetic resin is preferably a thermoplastic resin, more preferably one or more selected from polyester resin, polyamide resin, polyimide resin, polyamideimide resin, vinyl chloride resin, polycarbonate resin, polyphenylene sulfide resin, and modacrylic resin (a copolymer of acrylonitrile and vinyl chloride). The term "main component" means a component whose content in the synthetic fiber is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 80% by mass or more, and even more preferably 90% by mass or more and 100% by mass or less. In addition to the above synthetic resins, the synthetic fibers may further contain various components such as flame retardants, flame retardant assistants, light or heat stabilizers, fluorescent agents, antioxidants, antistatic agents, and ultraviolet absorbers, as long as the effects of the present invention are not impaired.

[0059] From the viewpoint of effectively imparting a smooth feel to the application site while exhibiting excellent foaming, the embodiment of the aerosol-type skin or hair cosmetic of the present invention is preferably a hair cosmetic, and more preferably used as a hair cleanser. That is, the application target of the hair cosmetic is preferably hair or fibers for head accessories, and more preferably hair. EXAMPLES

[0060] The present invention will now be described in detail with reference to the following examples. In the tables, the content of each component is expressed as mass % unless otherwise specified.

[0061] [Examples 1 to 19, Comparative Examples 1 to 10] The ingredients were blended according to the recipe for concentrate (X) shown in Tables 1 to 3, and then mixed until homogenous to prepare concentrate (X). Next, the obtained concentrate (X) was filled into an aerosol container (manufactured by Toyo Seikan Co., Ltd., container type: BL35A115-H), after which propellant (Y) (carbon dioxide content: 100% by mass) was enclosed in a ratio of concentrate (X):propellant (Y) = 50:1, and the internal pressure in the container at 25°C was set to 0.7 MPa to produce each cosmetic preparation. The obtained cosmetic preparation was used to carry out the measurements and evaluations according to the following methods. In Comparative Example 1, the concentrate (X) was used as it is as a cosmetic without being filled into an aerosol container. In Comparative Example 2, the concentrate (X) gelled and could not be filled into an aerosol container, so that subsequent measurements and evaluations could not be performed. The results are shown in Tables 1 to 3.

[0062] <pH Measurement> The prepared stock solutions (X) were each adjusted to a 5% by mass aqueous solution using water, thoroughly stirred, and then the pH was measured at 25° C. using a pH meter (HM-30R, manufactured by DKK-TOA Corporation).

[0063] Viscosity measurement Using a Brookfield viscometer (TV-10M, manufactured by Toki Sangyo Co., Ltd.), the rotor and rotation speed were selected according to the range of viscosity values, and measurements were performed at a temperature of 30±1° C. for 1 minute. Specifically, when the viscosity was 100 mPa s or less, rotor No. M1 was used at a rotation speed of 100 rpm, when the viscosity was in the range of 100 to 500 mPa s, rotor No. M2 was used at a rotation speed of 60 rpm, when the viscosity was in the range of 500 to 2,000 mPa s, rotor No. M3 was used at a rotation speed of 60 rpm, and when the viscosity was in the range of 2,000 to 10,000 mPa s, rotor No. M4 was used at a rotation speed of 60 rpm.

[0064] <Measurement of chloride ion content> 1.0g, 0.5g, and 0.1g of stock solution (X) were weighed out into 200mL beakers, diluted with 100mL purified water, and then placed on the magnetic stirrer of an automatic potentiometric titrator (AT-610, Kyoto Electronics Manufacturing Co., Ltd.) and stirred with a magnetic rotor. Then, a composite silver electrode and a burette were immersed in the diluted stock solution (X) and titrated with 0.01mol / L silver nitrate solution, and the average chloride ion content was calculated based on the amount of dripping.

[0065] <Evaluation of "foaming" during washing and "hair smoothness during rinsing"> The following ingredients were placed in a beaker and heated to 80° C., then mixed and confirmed to be uniformly dissolved, after which the mixture was cooled to obtain a plain shampoo. (Plain Shampoo Composition) (component) (mass%) Polyoxyethylene lauryl ether sulfate sodium 11.3 (42.0% as Emeral E-27C (Kao Corporation, active ingredient 27% by mass) Coconut oil fatty acid N-methylethanolamide 3.0 (Aminone C-11S (Kao Corporation)) Citric acid 0.2 Methylparaben 0.3 Purified water Balance Total 100.0

[0066] A 20 g, 20 cm long bundle of untreated Japanese hair was washed with the above-mentioned plain shampoo to obtain a bundle of hair for evaluation. The obtained bundle of hair for evaluation was thoroughly moistened with warm water at 35 to 40°C, and then 1 g of each cosmetic was sprayed onto it and washed for 1 minute. One expert panelist evaluated the items of "foaming" during washing and "smoothness of hair" during rinsing according to the following evaluation criteria.

[0067] 5: Very good 4: Good 3: Neither 2: Bad 1: Very bad

[0068] <<Measurement of the amount of intercellular lipid (cholesterol) elution>> 49 mg of ceramide II (Takasago International Corporation), 21 mg of palmitic acid (Sigma-Aldrich Corporation), and 32 mg of cholesterol (Sigma-Aldrich Corporation) were weighed, and then 4 mL of chloroform / methanol = 2 / 1 (v / v) was added to them, and the resulting solution was stirred at 30 ° C for 1 hour to dissolve them. The solvent was removed under a nitrogen stream, and the resulting powder was dried overnight under reduced pressure to obtain an intercellular lipid model. 10 mg of the obtained intercellular lipid was weighed out and placed in a vial, and 5 mL of each stock solution (X) discharged from an aerosol container was added, followed by stirring at 32°C for 1 hour. After the test, the supernatant was collected, and a solution containing the eluate from the intercellular lipid model was obtained as the eluate. 900 μL of methanol (manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.) and 1000 μL of chloroform (manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.) were added to 100 μL of the obtained eluate to obtain a solvent mixture. This solvent mixture was analyzed by the following method, and the cholesterol concentration (amount of eluted intercellular lipid) (μM) was quantified.

[0069] ·Device G6125B LC / MS (Agilent Technologies) Chromatographic separation conditions Chromatographic separation conditions described in Example 1 of JP 2017-67510 A Column: L-column ODS 2.1 mm i.d. x 150 mm (Chemicals Evaluation and Research Institute, Japan) (40°C) Mobile phase: A) 10mmol / L ionization promoter-containing methanol / water = 1 / 1 solution Mobile phase: B) 2-propanol Gradient: A100% (0 min) → B50% (5 min) → B100% (35 min) → B100% (45 min) Mobile phase flow rate: 0.2mL / min Equilibration time: 10min Ionization promoter: Ammonium bicarbonate ·MS analysis conditions Ionization method: APCI / Positive Measurement mode: SIM SIM monitor ion: [M+H-H2O] + Drying gas flow rate: 4.0L / min Nebulizer pressure: 60psig Drying gas temperature: 350℃ Capillary voltage: 2000V Fragmenter voltage: 150V

[0070] [Table 1]

[0071] *1: Soypon SLTA (triethanolamine salt), manufactured by Kawaken Fine Chemicals Co., Ltd. *2: Alanon ALE, manufactured by Kawaken Fine Chemicals Co., Ltd. *3: Amisoft CS-22B, manufactured by Ajinomoto Healthy Supply Co., Ltd. *4: Akipo LM-26SD, manufactured by Kao Corporation *5: ASCO AOS-35(M), manufactured by AK Chemtech Co., Ltd. *6: Diapon K-SF, manufactured by NOF Corporation *7: Softazoline LPB-R, manufactured by Kawaken Fine Chemicals Co., Ltd. *8: SOFCARE KG-101W-E (Polyquaternium-52), manufactured by Kao Corporation *9: Marquardt 2001 (Polyquaternium-47), manufactured by Lubrizol *10: Marquardt 2003PR (Polyquaternium-53), manufactured by Lubrizol *11: Marcote 280NP (Polyquaternium-22), manufactured by Lubrizol *12: Marcoat 550 (Polyquaternium-7), manufactured by Lubrizol *13: Caticello L-150 (Polyquaternium-10), manufactured by Kao Corporation *14: Leodor TW-O 106V, manufactured by Kao Corporation *15: Leodor TW-IS399C, manufactured by Kao Corporation *16: Glucamate VLT Thickner, manufactured by Lubrizol *17: Emanon CH-40, manufactured by Kao Corporation *18: Mydol 12, manufactured by Kao Corporation

[0072] [Table 2]

[0073] [Table 3]

Claims

1. An aerosol-type skin or hair cosmetic comprising a stock solution (X) and a propellant (Y) containing carbon dioxide, The stock solution (X) does not contain anionic surfactants containing sulfate groups, and contains the following components (a) to (c): (a) Anionic surfactants that do not contain sulfate groups (b) One or more polymers selected from acrylic cationic polymers and acrylic amphoteric polymers. (c) The following formula (c ｆ Nonionic surfactants represented by ) A-[(C ２ H ４ O) ｎ -R ｆ ] ｍ ・・・(c ｆ ) (wherein, A represents a polyol having a valency of 2 or more, (C ２ H ４ O) ｎ -R ｆ forms an ether bond with the OH group of A. The m R ｆ may be the same or different from each other, and represents H, or an alkyl group, an alkenyl group, or an acyl group which may be OH-substituted or EO-added with C1 to C24, and at least one R ｆ is an acyl group which may be OH-substituted or EO-added with C8 to C24. n represents an integer of 5 or more, and m represents an integer of 2 or more.) An aerosol-type skin or hair cosmetic containing the following, wherein the mass ratio of the content of component (a) to the content of component (b) ((a) / (b)) is 10 or more and 60 or less, and the content of the amphoteric surfactant is 2.5% by mass or less.

2. The aerosol-type skin or hair cosmetic according to claim 1, wherein component (c) is one or more selected from polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, castor oil, polyoxyethylene methyl glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, and fatty acid polyoxyethylene trimethylolpropane.

3. The aerosol-type skin or hair cosmetic according to claim 1 or 2, wherein the mass ratio ((b) / (c)) of the content of component (b) to the content of component (c) is 0.01 or more and 0.5 or less.

4. The aerosol-type skin or hair cosmetic according to claim 1 or 2, wherein component (a) is one or more selected from acyl amino acid salts, acyl taurine salts, polyoxyalkylene alkyl ether carboxylates, and alkyl sulfonates.

5. The aerosol-type skin or hair cosmetic according to claim 1 or 2, wherein the cationization density of component (b) is 5.5 meq / g or less.

6. The aerosol-type skin or hair cosmetic according to claim 1 or 2, wherein the chloride ion content in the stock solution (X) is 0.2% by mass or less.

7. The aerosol-type skin or hair cosmetic according to claim 1 or 2, wherein the carbon dioxide content in the propellant (Y) is 50% by mass or more.