Cosmetic composition

Abstract

To provide a cosmetic composition that offers excellent usability with perceivable thickness during application, even when containing a salt-type agent.SOLUTION: A cosmetic composition contains (A) a carbomer, (B) a thickening polysaccharide, (C) an alkyl-modified carboxyvinyl polymer, (D) a polyoxyethylene polyoxypropylene alkyl (C18-C28) ether, and (E) a salt-type agent.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cosmetic composition. [Background technology]

[0002] There are high-performance cosmetics that contain active ingredients such as whitening ingredients, and efforts have been made to stably blend the active ingredients. On the other hand, for skin care cosmetics, the texture and feel when applied to the skin are also important.

[0003] For example, there is a demand for cosmetics that have a moderate richness when applied to the skin, and that subsequently crumble and impart a fresh, watery feel as if the skin is overflowing with water. For this reason, oil-in-water emulsion cosmetics that contain (A) an associative thickener, (B) a water-absorbent polymer, and (C) a polar oil have been reported (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2021-116229 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a cosmetic composition that has an excellent feel when applied, and that allows the user to feel its thickness even when a salt-type drug is used. [Means for solving the problem]

[0006] The cosmetic composition of the present invention as a means for solving the above-mentioned problems contains (A) a carbomer, (B) a thickening polysaccharide, (C) an alkyl-modified carboxyvinyl polymer, (D) a polyoxyethylene polyoxypropylene alkyl (C18-C28) ether, and (E) a salt-type drug. Effect of the Invention

[0007] According to the present invention, it is possible to provide a cosmetic composition that has an excellent feel when applied, and that has a sense of thickness even when a salt-type drug is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] (Cosmetic composition) The cosmetic composition of the present invention contains (A) a carbomer, (B) a thickening polysaccharide, (C) an alkyl-modified carboxyvinyl polymer, (D) a polyoxyethylene polyoxypropylene alkyl (C18-C28) ether, and (E) a salt-type drug, and may further contain other ingredients as necessary.

[0009] A smooth, moisturizing feel that blends well is a desired characteristic of many cosmetic products, but it is not easy to achieve a desired thickness during application without compromising these characteristics. On the other hand, it is known that the thickness during application is highly dependent on the blending of a thickener. The present inventors have found that when a salt-type agent is blended into a cosmetic composition of the prior art, the action of the thickener is inhibited, and the thickness during application is not felt sufficiently. As a result of intensive research aimed at solving the above problem, the present inventors have found that by using (A) a carbomer, (B) a thickening polysaccharide, and (C) an alkyl-modified carboxyvinyl polymer as thickeners, and further using (D) a polyoxyethylene polyoxypropylene alkyl (C18-C28) ether and (E) a salt-type agent in combination, it is possible to provide a cosmetic composition that has a good blending and smooth lotion-like feel during application and an excellent feel during application, even when a salt-type agent is used, and thus have completed the present invention.

[0010] <(A) Carbomer> The (A) carbomer is an acrylic acid polymer (carboxyvinyl polymer) having an acrylic acid polymer as the main chain and crosslinked with at least one of pentaerythyl aliether, sucrose aliether, and propylene aliether, and is used as a thickening agent.

[0011] Examples of commercially available products of the (A) carbomer include Carbopol (registered trademark) 940, 941, 980, 981, 934, 2984, and 5984 (manufactured by Lubrizol Corporation), and Hiviswako (registered trademark) 104 and 105 (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.). These may be used alone or in combination of two or more.

[0012] The content of the (A) carbomer is not particularly limited and can be appropriately selected depending on the purpose, but in terms of maintaining an excellent feeling of use that allows the thickness to be felt during application even when a salt-type drug is used, as well as a good blending and smooth feeling of use like a lotion, the content is preferably 0.05% by mass or more and 0.3% by mass or less, more preferably 0.1% by mass or more and 0.3% by mass or less, and even more preferably 0.15% by mass or more and 0.3% by mass or less, relative to the total amount of the cosmetic composition. If the content is less than 0.05% by mass, the thickness may not be felt sufficiently during application, and if the content exceeds 0.3% by mass, the viscosity may be too high, resulting in a poor feeling of use.

[0013] <(B) Thickening polysaccharides> The thickening polysaccharide (B) is a polysaccharide used to increase the viscosity of a cosmetic composition, and is used as a thickening agent.

[0014] The thickening polysaccharide (B) is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include xanthan gum, succinoglycan, gellan gum, dextran, hyaluronic acid, guar gum, locust bean gum, quince seed, and carrageenan. These may be used alone or in combination of two or more.

[0015] The content of the thickening polysaccharide (B) is not particularly limited and can be appropriately selected depending on the purpose, but even if a salt-type drug is used, in order to provide an excellent feeling of use in which the thickness can be felt during application, and to maintain a good blending and smooth feeling of use like a lotion, the content is preferably 0.03% by mass or more and 0.2% by mass or less, more preferably 0.05% by mass or more and 0.2% by mass or less, and even more preferably 0.08% by mass or more and 0.2% by mass or less, relative to the total amount of the cosmetic composition. If the content is less than 0.03% by mass, the thickness may not be felt sufficiently during application, and if the content exceeds 0.2% by mass, the viscosity may be too high and the feeling of use may be poor.

[0016] <(C) Alkyl-modified carboxyvinyl polymer> The (C) alkyl-modified carboxyvinyl polymer is a copolymer of one or more monomers selected from acrylic acid, methacrylic acid or simple esters thereof with an alkyl acrylate (C10-30) crosslinked with an allyl ether of sucrose or an allyl ether of pentaerythritol, and is used as a thickener and emulsifier. These may be used alone or in combination of two or more.

[0017] The (C) alkyl-modified carboxyvinyl polymer may be, for example, an acrylates / alkyl acrylate (C10-30) crosspolymer, and a commercially available product thereof, PEMULEN (registered trademark) TR-2 (manufactured by Lubrizol Corporation), may be suitably used.

[0018] The content of the alkyl-modified carboxyvinyl polymer (C) is not particularly limited and can be appropriately selected according to the purpose, but even if a salt-type drug is used, in order to maintain a good blending and smooth lotion-like feel in addition to providing an excellent feeling of use that allows the thickness to be felt during application, the content is preferably 0.02% by mass or more and 0.1% by mass or less, more preferably 0.03% by mass or more and 0.1% by mass or less, and even more preferably 0.05% by mass or more and 0.1% by mass or less, relative to the total amount of the cosmetic composition. If the content is less than 0.02% by mass, the thickness may not be felt sufficiently during application, and if the content exceeds 0.1% by mass, the viscosity may be too high and the feel of use may be poor.

[0019] [Contents of components (A), (B) and (C)] The contents of the (A) component, the (B) component, and the (C) component are not particularly limited and can be appropriately selected depending on the purpose. However, even if a salt-type drug is used, in order to provide an excellent feeling of use in which the thickness can be felt during application, and to maintain a good affinity and smooth feeling of use like a lotion, the content of the (A) component is from 0.05% to 0.3% by mass, the content of the (B) component is from 0.03% to 0.2% by mass, and the content of the (C) component is from 0.02% to 0.1% by mass. It is preferable that the content of the (A) component is 0.1% by mass or more and 0.3% by mass or less, the content of the (B) component is 0.05% by mass or more and 0.2% by mass or less, and the content of the (C) component is 0.03% by mass or more and 0.1% by mass or less, and it is even more preferable that the content of the (A) component is 0.15% by mass or more and 0.3% by mass or less, the content of the (B) component is 0.08% by mass or more and 0.2% by mass or less, and the content of the (C) component is 0.05% by mass or more and 0.1% by mass or less.

[0020] The ratio (A / B) of the content of the component (A) to the content of the component (B) is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.8 / 1 or more and 5 / 1 or less.

[0021] <(D) Polyoxyethylene polyoxypropylene alkyl (C18-C28) ether> The (D) polyoxyethylene polyoxypropylene alkyl (C18 to C28) ether is used as a surfactant, and preferably has a structure represented by the following formula (I). These may be used alone or in combination of two or more.

[0022] RO(C3H6O) m (C2H4O) n H (I) In the formula (I), R represents a linear or branched alkyl group having 18 to 28 carbon atoms, m represents a number from 2 to 24, and n represents a number from 10 to 38.

[0023] In the component (D), the molar ratio n of ethylene oxide constituting the polyoxyethylene (POE) is preferably greater than the molar ratio m of propylene oxide constituting the polyoxypropylene (POP). In the formula (I), it is preferable that n>m.

[0024] As such component (D), POP(13)POE(24) decyl tetradecyl ether (INCI name: PPG-13 decyl tetradeceth-24) is preferred, and its commercially available product, S-safe 1324(D) (manufactured by NOF Corporation), can be suitably used.

[0025] The content of the (D) polyoxyethylene polyoxypropylene alkyl (C18-C28) ether is not particularly limited and may be appropriately selected depending on the purpose, but is preferably from 0.05% by mass to 1.0% by mass, more preferably from 0.1% by mass to 0.8% by mass, and even more preferably from 0.2% by mass to 0.5% by mass, relative to the total amount of the cosmetic composition.

[0026] <(E) Salt-type drugs> The (E) salt-type drug is a water-soluble drug capable of forming a salt, and is not particularly limited as long as it is one that is usually used in cosmetics, and can be appropriately selected depending on the purpose, and may or may not be in the form of a salt when blended. The (E) salt-type drug is blended as an active ingredient.

[0027] The (E) salt-type drug is not particularly limited and can be appropriately selected depending on the purpose, but is preferably selected from the group consisting of alkoxysalicylic acid and its derivatives, salicylic acid and its derivatives, tranexamic acid and its derivatives, pyrimidinylpyrazole and its derivatives, cyclic carboxamide and its derivatives, and L-ascorbic acid and its derivatives. These may be used alone or in combination of two or more.

[0028] The salt is not particularly limited, and a medicamentously acceptable salt can be appropriately selected depending on the purpose. Examples of the salt include alkali metal salts or alkaline earth metal salts such as potassium salts, sodium salts, calcium salts, etc.; inorganic salts such as phosphates, hydrochlorides, hydrobromides, sulfates, etc.; ammonium salts; amino acid salts; and the like.

[0029] The alkoxy salicylic acid is a salicylic acid in which the hydrogen atom at the 3rd, 4th or 5th position is replaced by an alkoxy group, and the alkoxy group as the substituent is preferably any of a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group and an isobutoxy group, and more preferably a methoxy group or an ethoxy group.Specific examples of the compound name include 3-methoxy salicylic acid, 3-ethoxy salicylic acid, 4-methoxy salicylic acid, 4-ethoxy salicylic acid, 4-propoxy salicylic acid, 4-isopropoxy salicylic acid, 4-butoxy salicylic acid, 5-methoxy salicylic acid, 5-ethoxy salicylic acid, and 5-propoxy salicylic acid.Of these, 4-methoxy salicylic acid is preferred.

[0030] Examples of the salicylic acid and the salicylic acid derivatives include homosalate, ethylhexyl salicylate, dipropylene glycol salicylate, and TEA salicylate. Commercially available products of these include, for example, Eusolex® HMS (Rona / EM Industries) as homosalate, Neo Heliopan® OS (Symrise) as ethylhexyl salicylate, and Dipsal® as dipropylene glycol salicylate. TM (manufactured by Scher), and TEA salicylate such as Neo Heliopan (registered trademark) TS (manufactured by Symrise).

[0031] Examples of the tranexamic acid derivatives include dimers of tranexamic acid such as trans-4-(trans-aminomethylcyclohexanecarbonyl)aminomethylcyclohexanecarboxylic acid hydrochloride; esters of tranexamic acid and hydroquinone such as 4-(trans-aminomethylcyclohexanecarboxylic acid 4'-hydroxyphenyl ester; esters of tranexamic acid and gentisic acid such as 2-(trans-4-aminomethylcyclohexylcarbonyloxy)-5-hydroxybenzoic acid; amides of tranexamic acid such as methylaminomethylcyclohexanecarboxamide, trans-4-aminomethylcyclohexanecarboxylic acid methylamide, trans-4-(p-methoxybenzoyl)aminomethylcyclohexanecarboxylic acid, and trans-4-guanidinomethylcyclohexanecarboxylic acid; and the like. Among these, methylaminomethylcyclohexanecarboxamide is preferred.

[0032] Examples of the pyrimidinylpyrazole and pyrimidinylpyrazole derivatives include dimethylpyrazolyldimethylpyrimidine, 5-ethyl-2-(4-ethyl-3,5-dimethylpyrazol-1-yl)-4,6-dimethylpyrimidine, and 4-isobutyl-2-(3-isobutyl-5-methylpyrazol-1-yl)-6-methylpyrimidine.

[0033] Examples of the salt of the cyclic carboxamide and the salt of the cyclic carboxamide derivative include 2-imidazolidinone, 1-(2-hydroxyethyl)-2-imidazolidinone, 1-(2-hydroxyethyl)-2-pyrrolidone, etc. Among these, 1-(2-hydroxyethyl)-2-imidazolidinone is preferred.

[0034] Examples of the derivatives of L-ascorbic acid include L-ascorbic acid monoalkyl esters such as L-ascorbic acid monostearate, L-ascorbic acid monopalmitate, and L-ascorbic acid monooleate; L-ascorbic acid monoesters such as L-ascorbic acid monophosphate and L-ascorbic acid-2-sulfate; L-ascorbic acid dialkyl esters such as L-ascorbic acid distearate, L-ascorbic acid dipalmitate, and L-ascorbic acid dioleate; L-ascorbic acid trialkyl esters such as L-ascorbic acid tristearate, L-ascorbic acid tripalmitate, and L-ascorbic acid trioleate; L-ascorbic acid triesters such as L-ascorbic acid triphosphate; and L-ascorbic acid glucosides such as L-ascorbic acid 2-glucoside. Among these, L-ascorbic acid 2-glucoside is preferred.

[0035] The content of the (E) salt-type drug is not particularly limited and can be appropriately selected depending on the purpose, but is preferably from 0.1% by mass to 3.0% by mass, more preferably from 0.5% by mass to 2.0% by mass, and even more preferably from 1.0% by mass to 2.0% by mass, relative to the total amount of the cosmetic composition.

[0036] <Water> The amount of water contained in the cosmetic composition is not particularly limited and may be appropriately selected depending on the purpose, but is preferably 60% by mass or more and 95% by mass or less, and more preferably 70% by mass or more and 90% by mass or less, relative to the total amount of the cosmetic composition.

[0037] <(F)Oil content> The cosmetic composition contains the components (A) to (E), and therefore can provide a sensation of use that allows the user to feel the thickness of the cosmetic composition during application. Therefore, the cosmetic composition does not need to contain the oil component (F), and even if the oil component (F) is contained, its content can be reduced.

[0038] When the (F) oil component is contained, the content of the (F) oil component is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.5 mass % or less, more preferably 0.1 mass % or less, and even more preferably 0.05 mass % or less.

[0039] The (F) oil component is not particularly limited, and may be appropriately selected from known cosmetic ingredients depending on the purpose. Examples of the oil component include vegetable oils, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, silicone oils, liquid oils and fats, solid oils and fats, waxes, and oil-soluble drugs.

[0040] <Other ingredients> In addition to the essential components (A) to (E), the cosmetic composition may contain optional components that are blended into known cosmetic compositions as other components. The other components are not particularly limited, and may be appropriately selected from known cosmetic components depending on the purpose. Examples of the other components include thickeners other than the components (A) to (C), alcohols having 6 or less carbon atoms, moisturizers, neutralizing agents, stabilizers, preservatives, emollients, ultraviolet absorbers, chelating agents, fragrances, and inorganic pigments.

[0041] Examples of the alcohol having 6 or less carbon atoms include ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol.

[0042] The moisturizing agent can enhance the moisturizing and hydrating effect of the skin. Examples of the moisturizing agent include glycerin (dynamite glycerin), 1,3-butylene glycol, dipropylene glycol, erythritol, maltitol, polyoxyethylene polyoxypropylene alkyl ether (excluding those corresponding to the component (D) above), acetylated hyaluronic acid and its salts. These may be used alone or in combination of two or more.

[0043] [viscosity] The viscosity of the cosmetic composition is not particularly limited, and known cosmetic components can be appropriately selected depending on the purpose. The viscosity at 25°C is preferably 10 mPa·s or more, more preferably 50 mPa·s or more, and even more preferably 100 mPa·s or more.

[0044] The viscosity of the cosmetic composition can be measured, for example, using a viscosity measuring device (VISCOMETER TVB-15, Toki Sangyo Co., Ltd.) with a No. 2 probe at 30° C. and a rotation speed of 12 revolutions per minute.

[0045] The cosmetic composition is preferably in the form of an aqueous composition, and may be in any form, such as a liquid or a gel.

[0046] [Application] The use of the cosmetic composition of this embodiment is not particularly limited and can be appropriately selected depending on the purpose. Examples include skin care cosmetics, pack cosmetics for the skin, lips and nails, and makeup cosmetics.

[0047] [Method of producing cosmetic composition] The cosmetic composition can be prepared by mixing the components together, optionally with heating, and appropriately stirring and mixing. EXAMPLES

[0048] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples. In the description of the examples, the values ​​of percentages (% and parts) are expressed as mass % relative to the total amount of the cosmetic composition, unless otherwise specified.

[0049] Example 1 A cosmetic composition was prepared according to the formulation shown in Table 1 below. The prepared cosmetic compositions were evaluated for "viscosity," "thickness during application," "smoothness," and "goodness of compatibility" as follows. The results are shown in Table 1.

[0050] <Viscosity> The viscosity of the prepared cosmetic composition was measured using a viscosity measuring device (VISCOMETER TVB-15, Toki Sangyo Co., Ltd.) No. 2 probe at 30° C. and a rotation speed of 12 rpm.

[0051] <Thickness during application> When the prepared cosmetic composition was applied to the skin, a sensory evaluation was performed to determine whether or not the cosmetic composition felt thick when applied, according to the following procedure, and the composition was evaluated based on the following evaluation criteria. - Sensory evaluation - A panel of five experts applied the prepared cosmetic composition to the back of the hand at room temperature and evaluated its feel when used. The evaluation was based on the evaluation criteria chosen by the most number of people. In the case of a tie in the number of evaluation criteria, the panelists discussed and decided the evaluation. -Evaluation criteria- 〇: I felt the thickness during application. △: I felt it was a little thick during application. ×: No thickness was felt during application

[0052] <Smoothness> The cosmetic compositions thus prepared were subjected to a sensory evaluation according to the above-mentioned procedure to determine whether or not they provided a smooth feel when applied to the skin, and were evaluated according to the following evaluation criteria. -Evaluation criteria- 〇: I felt it was smooth to use. △: Felt somewhat smooth when used ×: Did not feel smooth when used

[0053] <Familiarity> The cosmetic compositions thus prepared were subjected to a sensory evaluation according to the above-mentioned procedure to determine whether or not the cosmetic compositions felt good on the skin and were evaluated according to the following evaluation criteria. -Evaluation criteria- 〇: I felt it was easy to use △: I felt it blended in well and was easy to use. ×: I didn't feel it was easy to use

[0054] (Comparative Examples 1 to 7) The cosmetic compositions of Comparative Examples 1 to 7 were prepared in the same manner as in Example 1, except that at least one of the essential components (A) to (E) was omitted as shown in Table 1, and the "thickness during application," "smoothness," and "goodness of compatibility" were evaluated. The viscosity of Comparative Example 2 was also measured. The results are shown in Table 1.

[0055] (Examples 2 to 10) Cosmetic compositions of Examples 2 to 10 were prepared in the same manner as in Example 1, except that the formulations in Tables 2 and 3 were used, and the "thickness during application," "smoothness," and "goodness of compatibility" were evaluated. The viscosities of Examples 3 and 6 were also measured. The results are shown in Tables 2 and 3.

[0056] [Table 1]

[0057] [Table 2]

[0058] [Table 3]

[0059] As shown in Tables 1 to 3, the cosmetic compositions of Examples 1 to 6 contain all of the (A) component to the (E) component, and therefore have an excellent feel when applied, even when a salt-type drug is used. In addition, it was found that the composition maintains a smooth, lotion-like feel when applied. It was also found that the same feel when applied as in Example 1 could be ensured even when various (E) components were used (Examples 1 and 7 to 10).

[0060] On the other hand, when any of the components (A) to (E) was not included (Comparative Examples 1 to 7), it was not possible to ensure all of the thickness, smoothness, and good compatibility during application.

[0061] The components used in Tables 1 to 3 are as follows.

[0062] [Table 4]

[0063] Although the present invention has been described above based on specific embodiments and examples, these embodiments and examples are presented only as examples, and the present invention is not limited to the above embodiments and examples. Various changes, modifications, substitutions, deletions, additions, combinations, etc. are possible within the scope of the disclosure of the present invention.

Claims

1. (A) carbomer; (B) a thickening polysaccharide; (C) an alkyl-modified carboxyvinyl polymer; (D) polyoxyethylene polyoxypropylene alkyl (C18 to C28) ether; (E) a salt-type drug.

2. The content of the component (A) is 0.05% by mass or more and 0.3% by mass or less, The content of the (B) component is 0.03% by mass or more and 0.2% by mass or less, The cosmetic composition according to claim 1, wherein the content of the component (C) is from 0.02% by mass to 0.1% by mass.

3. 2. The cosmetic composition according to claim 1, wherein the ratio (A / B) of the content of the component (A) to the content of the component (B) is 0.8 / 1 or more and 5 / 1 or less.

4. 2. The cosmetic composition according to claim 1, wherein the component (B) is one or more thickening polysaccharides selected from the group consisting of xanthan gum, succinoglycan, gellan gum, dextran, hyaluronic acid, guar gum, locust bean gum, quince seed, and carrageenan.

5. 2. The cosmetic composition according to claim 1, wherein the molar ratio of ethylene oxide in component (D) is greater than the molar ratio of propylene oxide.

6. 2. The cosmetic composition according to claim 1, wherein the component (D) is polyoxypropylene (13) polyoxyethylene (24) decyl tetradecyl ether.

7. 2. The cosmetic composition according to claim 1, wherein the component (E) is one or more salt-type drugs selected from the group consisting of alkoxysalicylic acid and its derivatives, salicylic acid and its derivatives, tranexamic acid and its derivatives, pyrimidinylpyrazole and its derivatives, cyclic carboxamide and its derivatives, and L-ascorbic acid and its derivatives.

8. (F) further containing an oil component, The cosmetic composition according to claim 1, wherein the content of the component (F) is 0.5% by mass or less.

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