Cosmetic composition containing γ-tocopheryl phosphate or a salt thereof

Abstract

To provide a cosmetic composition containing γ-tocopheryl phosphate that is transparent while suppressing the formation of insoluble crystals over time. [Solution] A cosmetic composition containing γ-tocopheryl phosphate or a salt thereof, further comprising (a) at least one base selected from a predetermined group and / or (b) at least one polymer selected from a predetermined group, wherein the content of oily components is less than a predetermined upper limit based on the total amount of the composition.

Description

[Technical Field]

[0001] This disclosure relates to a cosmetic composition containing γ-tocopheryl phosphate or a salt thereof. [Background technology]

[0002] Tocopheryl phosphate is a phosphorylated form of tocopherol. α-Tocopheryl phosphate, a type of tocopheryl phosphate, is approved in various countries as an ingredient for use in cosmetics and possesses antioxidant and anti-inflammatory properties. On the other hand, γ-Tocopheryl phosphate, another type of tocopheryl phosphate, has not yet been commercialized as a cosmetic ingredient.

[0003] Regarding the use of γ-tocopheryl phosphate as a cosmetic ingredient, Patent Document 1 discloses an invention relating to an aqueous solution containing water, at least one tocopherol phosphate or a salt thereof, at least one nonionic surfactant, and at least one diol, wherein the tocopherol phosphate is dissolved in an amount of 3% by weight or more relative to the total weight of the aqueous solution. Furthermore, Patent Document 2 discloses an invention relating to a skin color improving agent containing a tocopherol phosphate ester or a salt thereof having a predetermined chemical structure as an active ingredient. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2012-140416 [Patent Document 2] International Publication No. 2016 / 031634 [Overview of the project] [Problems that the invention aims to solve]

[0005] γ-tocopheryl phosphate or its salts are not necessarily highly water-soluble, and depending on the composition of the aqueous composition in which they are contained, insoluble crystals may precipitate over time.

[0006] In the compositions described in the examples of Patent Documents 1 and 2 of the other party, in order to dissolve γ-tocopheryl phosphate or its salt, which has low water solubility, in water, an oily component is further contained. However, generally, when a large amount of an oily component is contained in an aqueous composition, the transparency of the aqueous composition may decrease due to the difference in refractive index and the effect of non-uniformity.

[0007] An object of the present disclosure is to provide a cosmetic composition containing γ-tocopheryl phosphate that is transparent and suppresses the generation of insoluble crystals over time.

Means for Solving the Problems

[0008] The present inventors have found that in a cosmetic composition containing γ-tocopheryl phosphate or its salt, when a predetermined component is further contained, the generation of insoluble crystals over time can be suppressed without containing a large amount of an oily component.

[0009] The present disclosure relates to, for example, the following. [1] A cosmetic composition containing γ-tocopheryl phosphate or its salt, The following component (a) and / or component (b): (a) At least one base selected from the group consisting of the following (a-1) to (a-III): (a-1) The following formula (I):

Chemical formula

[0010] This disclosure provides a cosmetic composition containing γ-tocopheryl phosphate that is transparent while suppressing the formation of insoluble crystals over time. [Modes for carrying out the invention]

[0011] The following describes the forms for implementing this disclosure, but this disclosure should not be construed as being limited to these embodiments. Unless otherwise specified in this disclosure, percentages represent mass percent.

[0012] In this disclosure, "C m -C n The term "alkyl" (where m and n are positive integers) indicates an alkyl group with m or more carbon atoms and n or less carbon atoms. Examples of C1-C5 alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, and 2,2-dimethylpropyl. Examples of C1-C3 alkyl groups include methyl, ethyl, n-propyl, and isopropyl.

[0013] One embodiment of the present disclosure relates to a cosmetic composition containing γ-tocopheryl phosphate or a salt thereof.

[0014] γ-Tocopheryl phosphate is a compound represented by the following structural formula. [ka]

[0015] In one embodiment, the γ-tocopheryl phosphate or a salt thereof relating to this disclosure may be a salt of γ-tocopheryl phosphate. In one preferred embodiment, the salt of γ-tocopheryl phosphate may be a salt with a monovalent cation, in one more preferred embodiment, it may be a salt with a monovalent cation of an alkali metal, and in one even more preferred embodiment, it may be a salt with a sodium ion (Na + ) may also be a salt of γ-tocopheryl phosphate. In this disclosure, sodium γ-tocopheryl phosphate, which is the sodium salt of γ-tocopheryl phosphate, is also referred to as "GAMMA TPNA" and "GPTNa".

[0016] The content of γ-tocopheryl phosphate or its salt in the cosmetic composition of this embodiment may be, for example, 0.02% by mass or more, 0.10% by mass or more, 0.30% by mass or more, 0.50% by mass or more, 0.80% by mass or more, or 1.00% by mass or more, based on the total amount of the composition, and may also be 50.0% by mass or less, 10.0% by mass or less, 3.00% by mass or less, 2.00% by mass or less, 1.20% by mass or less, or 1.00% by mass or less. In one embodiment, the content of γ-tocopheryl phosphate or its salt in the cosmetic composition of this embodiment may be, for example, 0.02% by mass or more and 50.0% by mass or less, 0.10% by mass or more and 10.0% by mass or less, 0.30% by mass or more and 3.00% by mass or less, 0.50% by mass or more and 2.00% by mass or less, 0.80% by mass or more and 1.20% by mass or less, or 1.00% by mass, based on the total amount of the composition.

[0017] The cosmetic composition of this embodiment further contains component (a) and / or component (b).

[0018] (a) Component is at least one base selected from the group consisting of (a-1) to (a-3) below. Component (a) may contain only one type of base or two or more types of bases. When the cosmetic composition of this embodiment contains component (a), insoluble crystals are less likely to form in the cosmetic composition over time.

[0019] (a-1) is an organic base represented by the following formula (I). [ka]

[0020] In equation (I), R 1 This represents a C1-C5 alkyl group in which one or more hydrogen atoms are substituted with hydroxyl groups, and in one embodiment, it may represent a C1-C3 alkyl group (hydroxy C1-C3 alkyl group) in which one hydrogen atom is substituted with a hydroxyl group, and in a preferred embodiment, it may represent a hydroxymethyl or hydroxyethyl group.

[0021] In equation (I), R 2 This represents a hydrogen atom, a C1-C5 alkyl group, or a C1-C5 alkyl group in which one or more hydrogen atoms are substituted with a hydroxyl group. In one embodiment, this may represent a hydrogen atom, a C1-C3 alkyl group, or a C1-C3 alkyl group (hydroxy C1-C3 alkyl group) in which one hydrogen atom is substituted with a hydroxyl group. In a preferred embodiment, this may represent a hydrogen atom, methyl, or hydroxymethyl.

[0022] In equation (I), R 3 This represents a C1-C5 alkyl group or a hydrogen atom, and in one embodiment it may represent a C1-C3 alkyl group or a hydrogen atom, and in a preferred embodiment it may represent a methyl group, an ethyl group or a hydrogen atom.

[0023] In equation (I), R 4a and R 4b Each independently represents a hydrogen atom, a C1-C5 alkyl group, or a C1-C5 alkyl group in which one or more hydrogen atoms are substituted with a hydroxyl group. In one embodiment, each independently may represent a hydrogen atom, a C1-C3 alkyl group, or a C1-C3 alkyl group (hydroxy C1-C3 alkyl group) in which one hydrogen atom is substituted with a hydroxyl group. In a preferred embodiment, each independently may represent a hydrogen atom, hydroxymethyl, hydroxyethyl, methyl, or ethyl.

[0024] In a more preferred embodiment, the organic base represented by formula (I) may be triethanolamine or AMPD. In formula (I), triethanolamine is R 1 is hydroxymethyl, and R2 is a hydrogen atom, and R 3 is a hydrogen atom, and R 4a and R 4b It is a compound in which hydroxyethyl is present. AMPD is also called 2-amino-2-methyl-1,3-propanediol, and in formula (I), R 1 is hydroxymethyl, and R 2 is hydroxymethyl, and R 3 is methyl and R 4a and R 4b It is a compound in which the atom is a hydrogen atom. When the organic base represented by formula (I) is triethanolamine or AMPD, insoluble crystals are less likely to form over time in the cosmetic composition.

[0025] (a-2) is an inorganic base. In one embodiment, the inorganic base according to this disclosure may be a metal hydroxide, in one preferred embodiment it may be an alkali metal hydroxide, and in one more preferred embodiment it may be sodium hydroxide or potassium hydroxide.

[0026] (a-3) is a basic amino acid. In this disclosure, the basic amino acid relating to this disclosure may be a basic α-amino acid in one embodiment, arginine, lysine, or histidine in one preferred embodiment, and arginine in one more preferred embodiment. The basic α-amino acid may be an L-form or a D-form, and in one embodiment may be an L-form.

[0027] The content of component (a) in the cosmetic composition of this embodiment may be, for example, 0.01% by mass or more, 0.03% by mass or more, 0.10% by mass or more, 0.15% by mass or more, 0.20% by mass or more, or 0.25% by mass or more, based on the total amount of the composition, and may also be 10.0% by mass or less, 5.00% by mass or less, 3.00% by mass or less, 2.50% by mass or less, 2.00% by mass or less, or 1.50% by mass or less. In one embodiment, the content of component (a) in the cosmetic composition of this embodiment may be, for example, 0.01% by mass or more and 10.0% by mass or less, 0.03% by mass or more and 5.00% by mass or less, 0.10% by mass or more and 3.00% by mass or less, 0.15% by mass or more and 2.50% by mass or less, 0.20% by mass or more and 2.00% by mass or less, or 0.25% by mass or more and 1.50% by mass or less, based on the total amount of the composition.

[0028] (b) Component is at least one polymer selected from the group consisting of (b-1) to (b-3) below. These polymers may be thickeners. Component (b) may consist of only one type of polymer or two or more types of polymers. When the cosmetic composition of this embodiment contains component (b), insoluble crystals are less likely to form in the cosmetic composition over time. Component (b) in one embodiment may be a neutral or basic polymer, and may be a neutral polymer.

[0029] (b-1) is a vinyl polymer containing ammonium acryloyldimethyltaurate as a monomer unit. That is, (b-1) is a polymer obtained by vinyl polymerization of a vinyl monomer containing ammonium acryloyldimethyltaurate. In one embodiment, (b-1) in this disclosure may be (ammonium acryloyldimethyltaurate / VP) copolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, polyacryloyldimethyltaurate ammonium, or polyacrylate crosspolymer-6.

[0030] (b-2) is a vinyl polymer containing a neutralized salt of (meth)acrylic acid as a monomer unit. That is, (b-2) is a polymer obtained by vinyl polymerization of a vinyl monomer containing (meth)acrylic acid and then neutralizing it with a base. The neutralized salt of (meth)acrylic acid may be, for example, a sodium salt of (meth)acrylic acid, and in one embodiment it may be a sodium salt of acrylic acid. (b-2) in this disclosure may be, for example, sodium polyacrylate or sodium acrylate / ammonium acryloyldimethyltaurate copolymer, and in one embodiment it may be sodium polyacrylate.

[0031] (b-3) is a polysaccharide. (b-3) may be a polysaccharide used as a thickening agent, for example, xanthan gum, carrageenan, alginic acid, sodium alginate, guar gum, cellulose gum, or dextrin, and in one embodiment it may be xanthan gum or carrageenan.

[0032] In a preferred embodiment, component (b) may be (ammonium acryloyldimethyltaurate / VP) copolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, ammonium polyacryloyldimethyltaurate, polyacrylate crosspolymer-6, sodium polyacrylate, xanthan gum, carrageenan, or a combination thereof.

[0033] (b) The number-average molecular weight (g / mol) of the polymer component may be, for example, 10,000 or more, 30,000 or more, 100,000 or more, or 200,000 or more, and may be 100 million or less, 30 million or less, 10 million or less, or 5 million or less.

[0034] The content of component (b) in the cosmetic composition of this embodiment may be, for example, 0.01% by mass or more, 0.03% by mass or more, 0.10% by mass or more, 0.15% by mass or more, 0.20% by mass or more, or 0.25% by mass or more, based on the total amount of the composition, and may also be 10.0% by mass or less, 5.00% by mass or less, 3.00% by mass or less, 2.00% by mass or less, 1.00% by mass or less, or 0.50% by mass or less. In one embodiment, the content of component (b) in the cosmetic composition of this embodiment may be, for example, 0.01% by mass or more and 10.0% by mass or less, 0.03% by mass or more and 5.00% by mass or less, 0.10% by mass or more and 3.00% by mass or less, 0.15% by mass or more and 2.00% by mass or less, 0.20% by mass or more and 1.00% by mass or less, or 0.25% by mass or more and 0.50% by mass or less, based on the total amount of the composition.

[0035] In one embodiment, the cosmetic composition of this embodiment may further contain a vinyl polymer containing (meth)acrylic acid as a monomer unit as component (c). The cosmetic composition according to this embodiment preferably also contains component (a) as described above. When the cosmetic composition of this embodiment contains components (a) and (c), the pH of the cosmetic composition does not become too acidic even though it contains component (c), so insoluble crystals are less likely to form in the cosmetic composition over time.

[0036] Component (c) is a vinyl polymer containing (meth)acrylic acid as a monomer unit. That is, component (c) is a polymer obtained by vinyl polymerization of a vinyl monomer containing (meth)acrylic acid. Such a polymer can be a thickener. Component (c) may be, for example, a vinyl polymer containing acrylic acid as a monomer unit. In one embodiment, component (c) may be (acrylates / alkyl acrylate (C10-30)) crosspolymer, carbomer, acrylate copolymer, acrylates / alkyl acrylate copolymer, polyacrylic acid, polyacrylate crosspolymer, acrylates / methacrylic acid copolymer, or (styrene / acrylates) copolymer, and in a preferred embodiment, it may be (acrylates / alkyl acrylate (C10-30)) crosspolymer or carbomer.

[0037] (c) The number-average molecular weight (g / mol) of the polymer component may be, for example, 10,000 or more, 30,000 or more, 100,000 or more, or 200,000 or more, and may be 100 million or less, 30 million or less, 10 million or less, or 5 million or less.

[0038] The content of component (c) in the cosmetic composition of this embodiment may be, for example, 0.01% by mass or more, 0.03% by mass or more, 0.10% by mass or more, 0.15% by mass or more, 0.20% by mass or more, or 0.25% by mass or more, based on the total amount of the composition, and may also be 10.0% by mass or less, 5.00% by mass or less, 3.00% by mass or less, 2.00% by mass or less, 1.00% by mass or less, or 0.50% by mass or less. In one embodiment, the content of component (c) in the cosmetic composition of this embodiment may be, for example, 0.01% by mass or more and 10.0% by mass or less, 0.03% by mass or more and 5.00% by mass or less, 0.10% by mass or more and 3.00% by mass or less, 0.15% by mass or more and 2.00% by mass or less, 0.20% by mass or more and 1.00% by mass or less, or 0.25% by mass or more and 0.50% by mass or less, based on the total amount of the composition.

[0039] In one embodiment, the cosmetic composition of this embodiment may further contain, as component (d), at least one aqueous medium selected from the group consisting of water and polyhydric alcohols.

[0040] The polyhydric alcohol in component (d) is preferably miscible with water and may be, for example, glycerin, propylene glycol, butylene glycol, pentylene glycol, or hexylene glycol, and in one embodiment may be glycerin or pentylene glycol. In one preferred embodiment, component (d) may be water, water and glycerin, or water and pentylene glycol.

[0041] The content of component (d) in the cosmetic composition of this embodiment may be, for example, 30% by mass or more, 50% by mass or more, 70% by mass or more, 80% by mass or more, or 90% by mass or more, or 99% by mass or less, 95% by mass or less, or 90% by mass or less, based on the total amount of the composition.

[0042] The water content in the cosmetic composition of this embodiment may be, for example, 30% by mass or more, 50% by mass or more, 70% by mass or more, 80% by mass or more, or 90% by mass or more, or 99% by mass or less, 95% by mass or less, or 90% by mass or less, based on the total amount of the composition.

[0043] The cosmetic composition of this embodiment may further contain other additives in addition to the γ-tocopheryl phosphate or its salt and components (a) to (d) described above. The additives may be at least one selected from the group consisting of, for example, humectants, skincare active ingredients, preservatives, solubilizers, pH adjusters, buffers, and chelating agents.

[0044] The solubilizer may be, for example, PPG-6-decyltetradeceth-20, PPG-6-decyltetradeceth-12, PPG-6-decyltetradeceth-30, or a combination thereof.

[0045] The additive content in the cosmetic composition of this embodiment may be, for example, 0.10% by mass or more, 0.30% by mass or more, 0.50% by mass or more, 0.70% by mass or more, or 1.00% by mass or more, based on the total amount of the composition, or 50.0% by mass or less, 10.0% by mass or less, 7.00% by mass or less, 5.00% by mass or less, or 3.00% by mass or less.

[0046] The cosmetic composition of this embodiment has an oily component content that is less than a predetermined upper limit. A lower oily component content tends to result in higher transparency in the cosmetic composition. The oily component content in the cosmetic composition may be, for example, less than 3.0% by mass, less than 2.5% by mass, less than 2.0% by mass, less than 1.5% by mass, less than 1.0% by mass, less than 0.5% by mass, less than 0.3% by mass, less than 0.1% by mass, or 0% by mass, based on the total amount of the composition. Among these, from the viewpoint of achieving higher transparency in the cosmetic composition, the oily component content in the cosmetic composition is preferably less than 2.0% by mass, and more preferably 0% by mass, based on the total amount of the composition.

[0047] The oily components relating to this disclosure include oils and fats, waxes, liquid alkane oils, liquid ester oils, fatty acids, and silicone oils. Oils and fats include Japanese wax, olive oil, castor oil, mink oil, macadamia nut oil, camellia oil, rosehip oil, and avocado oil. Waxes include beeswax, lanolin, carnauba wax, candelilla wax, and gay wax. Liquid alkane oils include liquid paraffin, light liquid isoparaffin, dodecane, isododecane, tetradecane, isotetradecane, hexadecane, isohexadecane, squalane, vegetable squalane, petrolatum, polyisobutylene, polybutene, and hydrogenated polyisobutene. Liquid ester oils include jojoba oil, cetyl isooctanate, cetyl ethylhexanoate, isopropyl myristate, isopropyl palmitate, ethylhexyl palmitate, octyldodecyl myristate, glyceryl trioctanoate (triethylhexanoin or glyceryl 2-ethylhexanoate), polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, diisostearyl malate, neopentyl glycol dioctanoate, neopentyl glycol dicaprate, tri(caprylic / capric acid)glyceryl, cholesterol fatty acid esters, and (caprylic / capric / succinic acid) triglycerides. Fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, and oleic acid. Silicone oils include polydimethylsiloxane (dimethicone), polymethylphenylsiloxane (diphenyldimethicone), caprylyl methicone, phenyl trimethicone, diphenylsiloxyphenyl trimethicone, amino-modified silicones, epoxy-modified silicones, carboxy-modified silicones, polyether-modified silicones, and alkyl-modified silicones.

[0048] The cosmetic composition of this embodiment may have a pH above a predetermined lower limit and / or below a predetermined upper limit, from the viewpoint of suppressing the formation of insoluble crystals over time. The pH of the cosmetic composition of this embodiment may be, for example, 3.0 or higher, 3.5 or higher, 4.0 or higher, 4.5 or higher, 5.0 or higher, 5.5 or higher, or 6.0 or higher, and may also be 12.0 or lower, 11.5 or lower, 11.0 or lower, 10.5 or lower, 10.0 or lower, 9.5 or lower, or 9.0 or lower. Furthermore, the pH of the cosmetic composition of this embodiment may be, for example, 3.0 or higher and 12.0 or lower, 3.5 or higher and 11.5 or lower, 4.0 or higher and 11.0 or lower, 4.5 or higher and 10.5 or lower, 5.0 or higher and 10.0 or lower, 5.5 or higher and 9.5 or lower, or 6.0 or higher and 9.0 or lower.

[0049] The cosmetic composition of this embodiment is transparent and free of insoluble crystals, as can be seen by visual inspection. Furthermore, the cosmetic composition of this embodiment may have an absorbance of, for example, 3.0 or less, 2.6 or less, 2.3 or less, 2.0 or less, 1.7 or less, 1.5 or less, 1.3 or less, or 1.0 or less at a path length of 5 mm and a wavelength of 650 nm. Such absorbance values ​​may be measured, for example, by a spectrophotometer.

[0050] The cosmetic composition of this embodiment can be used as a cosmetic for application to animals, in one embodiment as a cosmetic for application to humans, and in a preferred embodiment as a cosmetic for application to human skin. The cosmetic composition of this embodiment may be, for example, a cleanser, toner, lotion, serum, or emulsion. The form of the cosmetic composition of this embodiment may be, for example, a liquid or a semi-solid, in one embodiment it may be a liquid, gel, or cream, in a preferred embodiment it may be a liquid or gel, and in a more preferred embodiment it may be a liquid. In this disclosure, a semi-solid means a mixture of a liquid and a solid, for example, such a mixture having fluidity.

[0051] The viscosity of the cosmetic composition according to this disclosure may be, for example, 10 cP or more, 30 cP or more, or 100 cP or more, and may also be 100,000 cP or less, 40,000 cP or less, 15,000 cP or less, 7,000 cP or less, 4,000 cP or less, or 1,500 cP or less, and these upper and lower limits may be freely combined. The viscosity of the cosmetic composition according to this disclosure may be, for example, 10 cP or more and 100,000 cP or less, 10 cP or more and 15,000 cP or less, or 10 cP or more and 1,500 cP or less. These viscosities may be measured at, for example, 25°C, or they may be measured by shear viscosity measurement using, for example, a rotational viscometer (e.g., Rheolab QC; manufactured by Anton Paar).

[0052] The cosmetic composition of this embodiment can be manufactured, for example, by the following steps. 1)(d) Add some or all of the additives to the medium containing the components. 2) Raise the temperature of the mixture obtained in 1) to a temperature at which it becomes miscible with component (b) and / or component (c) (e.g., 80°C). (Except when component (b) and (c) are not present.) 3) Add component (b) and / or component (c) to the mixture heated in step 2), and stir until these components swell and are thoroughly mixed. (Except when component (b) and (c) are not included.) 4) Allow the mixture obtained in step 3) to cool to near room temperature (e.g., 30°C). 5) Add the remaining components of the cosmetic composition, including γ-tocopheryl phosphate or its salt, and component (a), to the mixture obtained in 4) and mix. (If component (a) is not present, do not add component (a).) Thus, one aspect of this embodiment may also be a method for producing a cosmetic composition, comprising including γ-tocopheryl phosphate or a salt thereof and component (a) and / or component (b) in an aqueous medium. Another aspect of this embodiment may also be a method for suppressing the time-dependent formation of insoluble crystals, comprising further including component (a) and / or component (b) in a cosmetic composition containing γ-tocopheryl phosphate or a salt thereof. Yet another aspect of this embodiment may also be the use of component (a) and / or component (b) in suppressing the time-dependent formation of insoluble crystals in a cosmetic composition containing γ-tocopheryl phosphate or a salt thereof. [Examples]

[0053] The present disclosure will be described in more detail below with reference to examples, but the present disclosure should not be construed as being limited to the following examples.

[0054] In the embodiments of this invention, cosmetic compositions were prepared in 0.5 kg to 1.0 kg quantities as follows: The components indicated as Phase I in the table were added to a stirring vessel. The mixture in the vessel was heated to 80°C. The components indicated as Phase II in the table were gradually added to the stirring vessel. The mixture in the stirring vessel was stirred until the polymer swelled. The mixture in the stirring vessel was cooled to 30°C. At a stage when the mixture had cooled to 40°C or below, the components indicated as Phase III and Phase IV in the table were added sequentially to obtain the cosmetic composition. The content ratio (mass %) of each component in each cosmetic composition is as shown in the table. Note that the cosmetic compositions shown in Table 3 do not contain the components indicated as Phase II in the table, and therefore the preparation of these cosmetic compositions did not include the step of adding and stirring the components indicated as Phase II in the table.

[0055] Each cosmetic composition obtained in this manner was left to stand at 4°C for one week. After one week, the presence or absence of insoluble crystals was visually evaluated. In the evaluation, cosmetic compositions that did not develop insoluble crystals were evaluated as "stable," and cosmetic compositions that developed white insoluble crystals were evaluated as "NG." The evaluation results are shown in the respective tables.

[0056] [Table 1]

[0057] [Table 2]

[0058] [Table 3]

Claims

1. A cosmetic composition containing γ-tocopheryl phosphate or a salt thereof, The following components (a) and / or (b): (a) At least one base selected from the group consisting of (a-1) to (a-3) below: (a-1) The following formula (I): 【Chemistry 1】 [In equation (I), R １ This is a C atom in which one or more hydrogen atoms are replaced by hydroxyl groups. １ -C ５ It indicates alkyl, R ２ C is a hydrogen atom. １ -C ５ Alkyl, or C in which one or more hydrogen atoms are substituted with hydroxyl groups １ -C ５ It indicates alkyl, R ３ represents C １ -C ５ alkyl or a hydrogen atom, R ４ａ and R ４ｂ These are, independently, hydrogen atoms and C １ -C ５ Alkyl, or C in which one or more hydrogen atoms are substituted with hydroxyl groups １ -C ５ [Indicates alkyl.] Organic bases represented by; (a-2) Inorganic bases; and (a-3) Basic amino acids; (b) At least one polymer selected from the group consisting of (b-1) to (a-3) below: (b-1) Vinyl polymer containing ammonium acryloyldimethyltaurate as a monomer unit; (b-2) Vinyl polymers containing the neutralized salt of (meth)acrylic acid as monomer units; and (b-3) polysaccharide; It further contains, A cosmetic composition in which the content of oily components is less than 3.0% by mass, preferably less than 2.0% by mass, and more preferably 0% by mass, based on the total amount of the composition.

2. R １ However, C where one hydrogen atom is replaced by a hydroxyl group １ -C ３ It indicates alkyl, R ２ However, hydrogen atoms, C １ -C ３ Alkyl, or C in which one hydrogen atom is substituted with a hydroxyl group １ -C ３ It indicates alkyl, R ３ However, C １ -C ３ Represents an alkyl or hydrogen atom, R ４ａ and R ４ｂ However, each is independent of the hydrogen atom, C １ -C ３ Alkyl, or C in which one hydrogen atom is substituted with a hydroxyl group １ -C ３ It indicates alkyl, Preferably, R １ However, it indicates hydroxymethyl or hydroxyethyl, R ２ However, it represents a hydrogen atom, methyl, or hydroxymethyl, R ３ However, it represents a methyl, ethyl, or hydrogen atom. R ４ａ and R ４ｂ However, each independently represents a hydrogen atom, hydroxymethyl, hydroxyethyl, methyl, or ethyl. more, The organic base is triethanolamine or AMPD. The cosmetic composition according to claim 1.

3. The cosmetic composition according to claim 1 or 2, wherein the inorganic base is a metal hydroxide, preferably an alkali metal hydroxide, and more preferably sodium hydroxide or potassium hydroxide.

4. The cosmetic composition according to any one of claims 1 to 3, wherein the basic amino acid is a basic α-amino acid, preferably arginine, lysine, or histidine, and more preferably arginine.

5. The cosmetic composition according to any one of claims 1 to 4, wherein component (b) is (ammonium acryloyldimethyltaurate / VP) copolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, ammonium polyacryloyldimethyltaurate, polyacrylate crosspolymer-6, sodium polyacrylate, xanthan gum, carrageenan, or a combination thereof.

6. The above-mentioned component (a) is contained, and the following component (c): (c) Vinyl polymers containing (meth)acrylic acid as monomer units; It further contains, Preferably, component (c) is an (acrylates / alkyl acrylate (C10-30)) crosspolymer or carbomer. A cosmetic composition according to any one of claims 1 to 5.

7. The following component (d): (d) At least one aqueous medium selected from the group consisting of water and polyhydric alcohols; It further contains, The cosmetic composition according to any one of claims 1 to 6, wherein the content of component (d) is 30% by mass or more based on the total amount of the cosmetic composition.

8. A cosmetic composition according to any one of claims 1 to 7, wherein the optical path length is 5 mm and the absorbance at a wavelength of 650 nm is 2.3 or less.

9. The composition according to any one of claims 1 to 8, which is in the form of a liquid or a semi-solid.

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