Cosmetics

Abstract

We provide cosmetics with an excellent user experience. [Solution] A cosmetic composition comprising (A) a glycine derivative having a specific structure or a salt thereof, (B) agar, (C) as an ingredient, at least one of (c-1) a water-absorbing polymer having a carboxyl group, or (c-2) a polysaccharide-based thickener, and (D) water.

Description

[Technical Field]

[0001] The present invention relates to cosmetics. Specifically, the present invention relates to cosmetics comprising a glycine derivative having a specific structure or a salt thereof. [Background technology]

[0002] Glycine derivatives or salts thereof are known to have a pore-reducing effect (e.g., Patent Document 1) and are included in various cosmetics. For cosmetics that care for pores, there is a demand for products in the form of a gel cream so that the cosmetic can be applied well to areas where pores are noticeable. Such gel cream cosmetics are generally filled in jar containers or tubes, and from the standpoint of ease of use, the cosmetic is required to have an appropriate viscosity (e.g., 10,000 mPa·s or higher).

[0003] However, it was found that when the content of thickeners is increased to enhance the viscosity of cosmetics containing glycine derivatives or their salts, there is a possibility that the cosmetic may not blend into the skin after application and may leave a feeling of residue on the skin, indicating that there is room for improvement in usability. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Patent No. 5241058 [Overview of the project]

[0005] The inventors have surprisingly discovered that a cosmetic composition comprising a glycine derivative or a salt thereof having a specific structure, agar, at least one of a carboxyl group-containing superabsorbent polymer or a polysaccharide-based thickener, and water, exhibits a specific viscosity while maintaining good usability. The present invention is based on these findings.

[0006] The following inventions are provided according to this disclosure. [1](A) Below formula (1): [ka] (In the formula, R 1 and R 2 Each of these is independently a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an aralkyl group, an aminomethylcarbonyl group, an amidino group, an alkylcarbonyl group, an alkenylcarbonyl group, an arylcarbonyl group, or an aralkylcarbonyl group, and R 3 R is a hydrogen atom, alkyl group, alkenyl group, aryl group, or aralkyl group, however R 1 , R 2 , and R 3 A cosmetic comprising (B) a glycine derivative or a salt thereof (which cannot simultaneously become a hydrogen atom), (C) at least one of the following as components: (c-1) a water-absorbing polymer having a carboxyl group, or (c-2) a polysaccharide-based thickener, and (D) water. [2] The cosmetic composition according to [1], wherein the content of component (A) is 0.3 to 5% by mass relative to the total amount of the cosmetic composition. [3] The cosmetic composition according to [1] or [2], wherein component (A) is glycylglycine or a salt thereof. [4] The cosmetic composition according to any one of [1] to [3], wherein the content of component (B) is 0.1 to 5% by mass relative to the total amount of the cosmetic composition. [5](c-1) A cosmetic composition according to any one of [1] to [4], wherein the component is sodium carbomer. [6](c-2) A cosmetic composition according to any one of [1] to [5], wherein the component is succinoglycan. [7] A cosmetic composition according to any one of [1] to [6], wherein the viscosity measured at 30°C using a type B rotational viscometer is 10,000 to 18,000 mPa·s. [8](E) Cosmetics according to any one of [1] to [7], further containing oil. [9] An oil-in-water emulsion cosmetic, the cosmetic described in any one of [1] to [8].

[0007] According to the present invention, a cosmetic excellent in usability can be provided. In particular, according to the cosmetic of the present invention, a cosmetic having a good viscosity and good skin affinity after application can be provided. Detailed description of the invention

[0008] The present invention relates to a cosmetic comprising (A) a glycine derivative having a specific structure or a salt thereof, (B) agar, (C) as a component, at least one of (c-1) a water-absorbing polymer having a carboxyl group or (c-2) a polysaccharide thickener, and (D) water. Hereinafter, the components that can be contained in the cosmetic of the present invention will be described.

[0009] (A) Glycine derivative or its salt The cosmetic according to the present invention comprises (A) a glycine derivative represented by the formula (1) or a salt thereof. (Hereinafter, it may be referred to as component (A). The same applies to other components) [Chemical formula] In the formula, R 1 and R 2 are each independently a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an aralkyl group, an aminomethylcarbonyl group, an amidino group, an alkylcarbonyl group, an alkenylcarbonyl group, an arylcarbonyl group, or an aralkylcarbonyl group. Preferably, either one of R 1 and R 2 is a hydrogen atom, and the other is a methyl group, an aminomethylcarbonyl group, or a benzylcarbonyl group. R 3 is a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, or an aralkyl group, preferably a hydrogen atom or a methyl group. However, R 1 , R 2 , and R 3 will not simultaneously be hydrogen atoms.

[0010] (A) component may be a salt of a glycine derivative represented by formula (1). The type of salt is not particularly limited as long as it is a pharmaceutically acceptable salt. For example, hydrochloride, sulfate, phosphate, hydrobromide, sodium salt, potassium salt, magnesium salt, calcium salt, magnesium salt, ammonium salt, etc. may be mentioned. Examples of organic salts include acetate, lactate, maleate, fumarate, tartrate, methanesulfonate, p-toluenesulfonate, triethanolamine salt, amino acid salt, etc. may be mentioned. (A) component is preferably glycylglycine.

[0011] (A) component can be blended in one kind or two or more kinds. The content of (A) component is preferably 0.3 to 5% by mass, more preferably 0.4 to 4% by mass, and even more preferably 1 to 2.5% by mass with respect to the total amount of the cosmetic.

[0012] (B) Agar The cosmetic according to the present invention contains (B) agar. (B) Agar is not particularly limited as long as it is mainly composed of agarose with high gelling power. Agar may be a natural product or a processed product. Purified agarose may be used as agar. The content of (C) agar is preferably 0.1% by mass to 5% by mass or more, more preferably 0.1 to 4% by mass, and particularly preferably 0.1 to 3% by mass with respect to the total mass of the cosmetic.

[0013] (C) component The cosmetic of the present invention contains at least one of (c-1) a water-absorbing polymer having a carboxyl group or (c-2) a polysaccharide thickener as the (C) component.

[0014] (c-1) A water-absorbing polymer having a carboxyl group (c-1) The superabsorbent polymer having a carboxyl group is a homopolymer or copolymer of a monomer having a carboxyl group, or a derivative thereof, which has a water absorption capacity of preferably 10 times or more its own weight, more preferably 10 to 1000 times, and even more preferably 10 to 500 times in a dry state. If the water absorption capacity is less than 10 times its own weight, the desired properties cannot be obtained, and if it exceeds 1000 times, it tends to become more prone to twisting as the absorption capacity increases.

[0015] (c-1) The structure of the superabsorbent polymer having carboxyl groups is not particularly limited and may be a structure having carboxyl groups in the polymer main chain or a structure having carboxyl groups in the side chain. Preferably, homopolymers or copolymers (graft, block, random) produced by polymerization of raw material monomers including acrylic acid monomers are used. Specific examples include crosslinked or non-crosslinked polyacrylates containing sodium polyacrylate (e.g., carbomer Na), acrylates crosspolymer-2-Na, sodium acrylate (Na) graft starch, etc. (c-1) Carbomer Na is preferably used as the superabsorbent polymer having carboxyl groups.

[0016] While not particularly limited, commercially available superabsorbent polymers can be used as the superabsorbent polymer in this invention. Examples of such commercially available products include AQUPEC MG N40R (manufactured by Sumitomo Seika Co., Ltd.), ARON NT-Z (manufactured by Toagosei Co., Ltd.), Makimousse12 (average particle size approximately 12 μm, manufactured by Daito Kasei Kogyo Co., Ltd.), and Makimousse25 (average particle size approximately 25 μm, manufactured by Daito Kasei Kogyo Co., Ltd.). Among these, it is desirable to select a polymer with high water absorption (more than 10 times its own weight).

[0017] (c-1) Component is preferably present in an amount of 0.01 to 10% by mass relative to the total amount of the cosmetic. When the cosmetic composition contains sodium carbomer as component (c-1), the content of sodium carbomer is preferably 0.01 to 2% by mass, more preferably 0.05 to 1.5% by mass, and even more preferably 0.1 to 1% by mass, based on the total amount of the cosmetic composition.

[0018] The mass ratio of the content of component (c-1) to the content of component (B), ((c-1) / B), is preferably 1 / 10 to 10, and more preferably 1 / 5 to 5.

[0019] (c-2) Polysaccharide-based thickeners The (c-2) polysaccharide-based thickener that may be included in the cosmetic composition of the present invention may be any polysaccharide-based thickener derived from plants, seaweed, microorganisms, or other sources.

[0020] The polysaccharide-based thickeners that may be included in the cosmetic composition of the present invention are not particularly limited, but include xanthan gum, gellan gum, succinoglycan, sclerotium gum, gum arabic, Alcaligenes-producing polysaccharides, hydroxyethylcellulose, guar gum, carrageenan, hyaluronic acid, tuberose polysaccharide, Tremella fuciformis polysaccharide, locust bean gum, oxidized cellulose, etc., and one or more of these polysaccharide-based thickeners may be used. Among these, the cosmetic composition of the present invention preferably contains succinoglycan or xanthan gum, and particularly preferably succinoglycan.

[0021] (c-2) Component is preferably present in an amount of 0.005 to 10% by mass relative to the total amount of the cosmetic. When a cosmetic composition contains succinoglycans as component (c-2), the succinoglycan content is preferably 0.005 to 2% by mass, more preferably 0.01 to 1.5% by mass, and particularly preferably 0.01 to 1% by mass, based on the total mass of the cosmetic composition.

[0022] The cosmetic composition of the present invention contains either component (c-1) or component (c-2). Preferably, the cosmetic composition of the present invention contains component (c-2), or contains both component (c-1) and component (c-2).

[0023] The mass ratio of the content of component (c-2) to the content of component (B), ((c-2) / B), is preferably 1 / 100 to 10, and more preferably 1 / 20 to 5.

[0024] (D)Water The cosmetic composition according to the present invention comprises (D) water. As the water, water used for cosmetics, quasi-drugs, etc., can be used, for example, purified water, ion-exchanged water, tap water, etc. The water content is preferably 40 to 95% by mass, and more preferably 50 to 90% by mass, relative to the total amount of the cosmetic composition according to the present invention.

[0025] (E) Oil The cosmetic composition of the present invention may contain (E) oil in addition to (A) to (D). In such cases, the cosmetic composition of the present invention generally takes the form of an oil-in-water cosmetic or a water-in-oil cosmetic, but may also be a two-layer cosmetic that separates into two layers when left to stand.

[0026] (E) Examples of oils include ester oils, silicone oils, hydrocarbon oils, higher fatty acids, higher alcohols, liquid oils, solid oils, and semi-solid oils. Preferably, the oil is an ester oil, silicone oil, hydrocarbon oil, or higher alcohol. (D) One or more components may be blended. The content of component (E) is preferably 1 to 40% by mass relative to the total amount of the cosmetic.

[0027] Examples of ester oils include octyl octanoate, nonyl nonanoate, cetyl octanoate, isopropyl myristate (isopropyl myristate), octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, and isocetyl isostearate. , 12-Hydroxystearate Cholesteryl, Di-2-Ethylhexanoate Ethylene Glycol, Dipentaerythritol Fatty Acid Ester, N-Alkyl Glycol Monoisostearate, Neopentyl Glycol Dicaprate, Tripropylene Glycol Pivalate, Diisostearyl Malate, Glyceryl Di-2-Heptyl Undecanoate, Glyceryl Diisostearate, Trimethylolpropane Tri-2-Ethylhexanoate, Trimethylolpropane Triisostearate Pentaerythritol tetra-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate-2-ethylhexyl palmitate, glyceryl trimyristate, glyceride tri-2-heptylundecanoate, methyl castor oil fatty acid ester, oleyl oleate, acetoglyceride, 2-heptylun palmitate Examples include decyl, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, triethyl citrate, cetyl ethylhexanoate, and macadamia nut fatty acid phytosteryl.

[0028] Examples of silicone oils include linear polysiloxanes (e.g., dimethicone, diphenylsiloxyphenyl trimethicone, diphenylpolysiloxane, etc.), cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.), silicone resins forming a three-dimensional network structure, silicone rubber, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), acrylic silicones, etc., with linear polysiloxane being preferred.

[0029] Examples of hydrocarbon oils include isododecane, isohexadecane, isoparaffin, mineral oil (liquid paraffin), ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, and hydrogenated polydecene.

[0030] Examples of high-grade fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tallic acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

[0031] Examples of higher alcohols include straight-chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, etc.) and branched-chain alcohols (e.g., lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.).

[0032] Examples of liquid oils include avocado oil, camellia oil, macadamia nut oil, corn oil, olive oil, rapeseed oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, elm oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese tuni oil, jojoba oil, germ oil, and triglycerin. Examples of solid oils include cocoa butter, coconut oil, hydrogenated coconut oil, palm oil, palm kernel oil, hydrogenated palm oil, Japanese wax kernel oil, hydrogenated oil, Japanese wax, and hydrogenated castor oil. Examples of semi-solid oils include shea butter, partially hydrogenated coconut oil, and partially hydrogenated jojoba oil.

[0033] In addition to the above-mentioned components, the cosmetic composition of the present invention may contain any other components commonly used in cosmetics and pharmaceuticals. These optional components include, for example, surfactants, humectants, lower alcohols, metal ion chelating agents, neutralizing agents, pH adjusters, antioxidants, preservatives, pharmaceuticals, UV absorbers, powder components, fragrances, and the like. One or more of these optional components may be incorporated into the cosmetic composition as long as they achieve the effects of the present invention.

[0034] The cosmetic composition of the present invention may further contain polyhydric alcohols. Examples of polyhydric alcohols include glycerin, ethylene glycol, propylene glycol, 1,3-butylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, and polybutylene glycol. Among these, dipropylene glycol or 1,3-butylene glycol is preferred. Polyhydric alcohols can be used alone or in combination of two or more. However, the content of polyhydric alcohols is preferably 1 to 30% by mass, more preferably 2 to 25% by mass, and even more preferably 5 to 25% by mass, based on the total amount of the cosmetic.

[0035] The cosmetic composition of the present invention may further contain a surfactant. There are no particular restrictions on the surfactant, and anionic surfactants, cationic surfactants, amphoteric surfactants, or nonionic surfactants can be used, but the use of a nonionic surfactant is preferred.

[0036] Nonionic surfactants are not particularly limited as long as they are commonly used in cosmetics. Examples of nonionic surfactants include glycerin or polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyoxyethylene (POE) sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE glycerin fatty acid esters, POE fatty acid esters, POE alkyl ethers, POE-polyoxypropylene (POP) alkyl ethers, POE castor oil or POE hydrogenated castor oil, alkanolamides, POE propylene glycol fatty acid esters, POE alkylamines, POE fatty acid amides, POE-modified silicones, POE-POP-modified silicones, etc. One or more of these can be used.

[0037] Among these, polyoxyethylene hydrogenated castor oil is preferred, for example, PEG-60 hydrogenated castor oil, PEG-100 hydrogenated castor oil, etc. The surfactant content is preferably 0.01 to 5% by mass, and more preferably 0.01 to 3% by mass, based on the total amount of the cosmetic composition.

[0038] The viscosity of the cosmetic composition according to the present invention is preferably 10,000 to 18,000 mPa·s, and more preferably 12,000 to 16,000 mPa·s, when measured at 30°C with a B-type viscometer. This viscosity helps to prevent the cosmetic composition from dripping when applied.

[0039] The present invention provides a cosmetic composition that has good viscosity while being easily absorbed into the skin after application. Furthermore, the present invention also suppresses changes in color tone under high-temperature conditions while maintaining good viscosity.

[0040] The dosage form of the cosmetic composition according to the present invention is not particularly limited, but it is preferably in the form of an oil-in-water emulsion cosmetic. In an oil-in-water emulsion cosmetic, the aqueous phase comes into contact with the skin first, giving the skin a fresh feeling and making it possible to more fully experience the effects of the present invention.

[0041] Examples of cosmetics according to the present invention include skincare cosmetics (e.g., gels, creams, serums, packs, masks, etc.), makeup cosmetics (e.g., foundations, makeup bases, etc.), skin cleansing products (e.g., facial cleansers, makeup removers, etc.), and sunscreen cosmetics. These forms are merely examples, and the cosmetics according to the present invention are not limited to these forms. The cosmetic composition according to the present invention can be manufactured by conventional methods. [Examples]

[0042] The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the content is expressed as mass % of the total amount.

[0043] [Examples 1-5 and Comparative Examples 1-3] Oil-in-water emulsion cosmetics for Examples 1-3 and Comparative Examples 1-3 were prepared using the formulations shown in Table 1. The viscosity of the cosmetics was measured at 30°C using a B-type rotational viscometer. [Table 1]

[0044] [Changes in color tone] The cosmetic preparation described above was stored in a high-temperature environment (70°C) for 3 days, and the change in color was observed. The change in color was evaluated according to the following criteria. The results obtained are shown in Table 1. If the change in color is very slight, it is acceptable for the product. 5: No change in color tone was observed. 4: Very slight changes in color tone were observed. 3: A slight change in color tone was observed. 2: Many changes in color tone were observed. 1: The color tone has completely changed

[0045] [Evaluation of usability: Skin compatibility] Ten expert panelists applied the cosmetics prepared above to their skin and evaluated how well they blended with the skin during application. Here, "blend with the skin" means that the cosmetic penetrated the skin, blended in without any discomfort, and gave the user the feeling that the application process was complete. A: More than 8 people rated it as having good skin compatibility. B: 5 to 7 people rated it as being easily absorbed by the skin. C: 3-4 people rated it as having good skin compatibility. D: Two or fewer people rated it as having good skin compatibility.

Claims

1. (A) The following formula (1): 【Chemistry 1】 (In the formula, R １ and R ２ Each of these is independently a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an aralkyl group, an aminomethylcarbonyl group, an amidino group, an alkylcarbonyl group, an alkenylcarbonyl group, an arylcarbonyl group, or an aralkylcarbonyl group. R ３ These are a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, or an aralkyl group. However, R １ , R ２ , and R ３ (They cannot simultaneously become hydrogen atoms.) A glycine derivative or salt thereof represented by (B) Agar; (C) component, (c-1) A superabsorbent polymer having a carboxyl group, or (c-2) Polysaccharide-based thickeners, At least one of the following, and (D) water; A cosmetic product containing [the specified ingredient].

2. The cosmetic composition according to claim 1, wherein the content of component (A) is 0.3 to 5% by mass relative to the total amount of the cosmetic composition.

3. (A) The cosmetic composition according to claim 1 or 2, wherein component (A) comprises glycylglycine or a salt thereof.

4. The cosmetic composition according to claim 1 or 2, wherein the content of component (B) is 0.1 to 5% by mass relative to the total amount of the cosmetic composition.

5. (c-1) The cosmetic composition according to claim 1 or 2, wherein the component comprises sodium carbomer.

6. (c-2) The cosmetic composition according to claim 1 or 2, wherein the component comprises succinoglycan.

7. The cosmetic composition according to claim 1 or 2, wherein the viscosity measured at 30°C using a type B rotational viscometer is 10,000 to 18,000 mPa·s.

8. (E) The cosmetic composition according to claim 1 or 2, further comprising an oil.

9. The cosmetic composition according to claim 1 or 2, which is an oil-in-water emulsion cosmetic composition.