Powder cosmetic

Abstract

To provide powder cosmetics with a moisturizing application feel, superior adherence to the skin during application, even coverage on the skin, and a finish free from dryness.SOLUTION: Powder cosmetics contain following components (A) and (B): (A) acylamino acid and (B) fatty acid metal salt, where the total content of components (A) and (B) is 46 mass% or more.SELECTED DRAWING: None

Description

[Technical field]

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

[0002] Powder cosmetics such as loose powders are used to obtain a smooth feel when used and a uniform, natural finish. For example, Patent Document 1 describes that a powder cosmetic containing octanoyl lysine, an oil component, and boron nitride is uniform after application, is not powdery, and has a natural finish that looks moisturized. Patent Document 2 describes that a powder cosmetic containing a fine powder with a specific volume average particle size and an organic powder with specific long and short diameters has a good feel on the skin, such as smoothness, provides a moist feeling, and can make unevenness such as pores and fine wrinkles less noticeable, and provides a natural finish even without the use of a makeup base. Patent Document 3 describes that cosmetics, particularly powder cosmetics, containing fatty acid magnesium salt particles and acylamino acids are excellent in usability, such as smoothness, moist feeling, natural finish, and gloss. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-197496 A [Patent Document 2] Japanese Patent Application Publication No. 10-175822 [Patent Document 3] Patent Publication No. 2022-56558 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional powder cosmetics have the problem that they slide on the skin when applied and do not adhere well to the skin. [Means for solving the problem]

[0005] The present inventors have discovered that a powder cosmetic containing a total of 46% by mass or more of an acylamino acid and a fatty acid metal salt provides a moist application feel, excellent adhesion to the skin during application, uniform adhesion to the skin, and a finish that does not feel dry.

[0006] The present invention comprises the following components (A) and (B): (A) acyl amino acid, (B) Fatty acid metal salt The present invention relates to a powder cosmetic preparation comprising the above components, wherein the total content of components (A) and (B) is 46 mass% or more. Effect of the Invention

[0007] The powder cosmetic of the present invention has a moist application feel, is excellent in adhesion to the skin during application, adheres evenly to the skin, and gives a finish without a dry feeling. Furthermore, after application, the powder cosmetic feels one with the skin, blends well with the skin, and gives the skin a smooth feel after application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] In the acylamino acid of component (A), the amino acid is preferably an α-amino acid, more preferably lysine. Furthermore, the fatty acid residue constituting the acyl group of the acylamino acid is preferably a fatty acid residue having 8 to 14 carbon atoms, and more preferably a fatty acid residue having 8 to 12 carbon atoms. As component (A), from the viewpoint of obtaining a smooth feel on the skin after application, lauroyl lysine and octanoyl lysine are preferred, and lauroyl lysine is more preferred. The volume average particle size of the acylamino acid of component (A) is preferably 1 to 50 μm, more preferably 3 to 30 μm, and even more preferably 5 to 25 μm, from the viewpoint of excellent adhesion to the skin and suppression of slippage. Here, the volume average particle size is measured by a laser diffraction scattering particle size distribution measuring instrument (LA-920, manufactured by Horiba, Ltd.). In the present invention, the volume average particle size is the average particle size based on volume, and is the 50% median size.

[0009] Component (A) may be used alone or in combination of two or more, and the content is preferably 45% by mass or more, more preferably 48% by mass or more, and even more preferably 52% by mass or more, and is preferably 98% by mass or less, more preferably 97% by mass or less, and even more preferably 95% by mass or less, based on the total composition, from the viewpoint of obtaining a smooth feel on the skin after application. The content of component (A) is preferably 45 to 98% by mass, more preferably 48 to 97% by mass, and even more preferably 52 to 95% by mass.

[0010] The component (B) used in the present invention is a fatty acid metal salt, and any of those commonly used in cosmetics may be used, with water-insoluble ones being preferred. In the fatty acid metal salt of component (B), the fatty acid is preferably a fatty acid having 12 to 22 carbon atoms, and more preferably a fatty acid having 14 to 18 carbon atoms. Examples of fatty acids include lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, arachic acid, behenic acid, and hydroxystearic acid. Myristic acid and stearic acid are preferred, and myristic acid is more preferred. From the viewpoint of excellent adhesion to the skin and suppression of sliding on the skin, fatty acid metal salts of polyvalent metals are preferred, fatty acid salts of divalent metals are more preferred, fatty acid salts of magnesium and fatty acid salts of zinc are even more preferred. As component (B), magnesium myristate, zinc myristate, and zinc stearate are preferred, with magnesium myristate being more preferred. The volume average particle size of the fatty acid metal salt of component (B) is preferably 1 to 30 μm, more preferably 3 to 20 μm, and even more preferably 4 to 15 μm, from the viewpoint of excellent adhesion to the skin and suppression of slippage. Here, the volume average particle size is measured by a laser diffraction scattering particle size distribution measuring instrument (LA-920, manufactured by Horiba, Ltd.). In the present invention, the volume average particle size is the average particle size based on volume, and is the 50% median size.

[0011] Component (B) may be used alone or in combination of two or more, and the content is preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 3% by mass or more, preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less, based on the total composition, from the viewpoint of excellent adhesion to the skin and suppression of slippage. The content of component (B) is preferably 1 to 30% by mass, more preferably 2 to 25% by mass, and even more preferably 3 to 20% by mass, based on the total composition.

[0012] In the present invention, the total content of components (A) and (B) is 46% by mass or more, preferably 50% by mass or more, more preferably 55% by mass or more, preferably 100% by mass or less, more preferably 99% by mass or less, and even more preferably 98% by mass or less, in order to maintain a smooth feel on the skin after application, suppress slippage during application, and provide excellent adhesion to the skin. The total content of components (A) and (B) is 46% by mass or more, preferably 46 to 100% by mass, more preferably 50 to 99% by mass, and even more preferably 55 to 98% by mass, in the total composition.

[0013] In the present invention, the mass ratio of components (A) and (B), ((B) / (A))×100, is preferably 3 or more, more preferably 4 or more, and even more preferably 5 or more, and is preferably 45 or less, more preferably 40 or less, and even more preferably 35 or less, from the viewpoint of maintaining a smooth feel on the skin after application, having a moist application feel, not slipping on the skin during application, having excellent adhesion to the skin, and achieving a finish without a dry feel, while at the same time maintaining a smooth feel on the skin after application. Furthermore, the mass ratio of components (A) and (B), ((B) / (A))×100, is preferably 3 to 45, more preferably 4 to 40, and even more preferably 5 to 35.

[0014] The powder cosmetic of the present invention may further contain (C) one or more selected from sulfates and carbonates, which can suppress the slippery feeling, improve the adhesion to the skin after application, and reduce the sticky feeling. As component (C), water-insoluble sulfates and carbonates are preferred, polyvalent metal sulfates and carbonates are more preferred, and divalent metal sulfates and carbonates are even more preferred. Examples of the component (C) include calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, etc., with calcium sulfate, barium sulfate, and magnesium carbonate being preferred, and calcium sulfate being more preferred. The volume average particle size of the sulfate and carbonate of component (C) is preferably 1 to 45 μm, more preferably 1.5 to 40 μm, from the viewpoint of suppressing the slippery feeling on the skin when applied and enhancing the close contact feeling on the skin after application. Here, the volume average particle size is measured by a laser diffraction scattering particle size distribution measuring instrument (LA-920, manufactured by Horiba, Ltd.). In the present invention, the volume average particle size is the average particle size based on volume, and is the 50% median size.

[0015] Component (C) can be used alone or in combination of two or more, and the content is preferably 0.2% by mass or more in the total composition, more preferably 1% by mass or more, even more preferably 2% by mass or more, preferably 40% by mass or less, more preferably 35% by mass or less, and even more preferably 30% by mass or less, from the viewpoints of suppressing the feeling of slipping on the skin, enhancing the feeling of adhesion to the skin after application, and achieving a sense of unity and good compatibility between the powder cosmetic and the skin after application. The content of component (C) is preferably 0.2 to 40% by mass in the total composition, more preferably 1 to 35% by mass, and even more preferably 2 to 30% by mass.

[0016] In the present invention, the mass ratio of components (A) and (C) ((C) / (A))×100 is preferably 0.2 or more, more preferably 0.5 or more, and even more preferably 1 or more, and is preferably 60 or less, more preferably 40 or less, and even more preferably 35 or less, from the viewpoints of providing a moist application feel, excellent adhesion to the skin during application, uniform adhesion to the skin, a finish without a dry feel, a sense of unity and good affinity between the powder cosmetic and the skin after application, and a smooth feel on the skin after application. Furthermore, the mass ratio of components (A) and (C) ((C) / (A))×100 is preferably 0.2 to 60, more preferably 0.5 to 40, and even more preferably 1 to 35.

[0017] The powder cosmetic preparation of the present invention may further contain powders other than the components (A), (B) and (C). The particle shape of the powder is not limited, and may be, for example, spherical, acicular, plate-like, or amorphous. There are no limitations on the powder as long as it is one that is commonly used in cosmetics, and examples of the powder that can be used include extender pigments, coloring pigments, and luster pigments. Examples of the extender pigment include inorganic pigments such as silicic acid, silicic acid anhydride, magnesium silicate, talc, sericite, boron nitride, mica, synthetic mica, glass flakes, synthetic phlogopite, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, aluminum silicate, magnesium silicate, silica, alumina, and composite pigments thereof. Specific examples of composite pigments include titanium oxide-coated mica, zinc oxide-coated mica, titanium oxide-zinc oxide-coated mica, iron oxide-coated mica, iron oxide-coated mica titanium, barium sulfate-titanium oxide-coated mica, iron oxide-coated synthetic phlogopite, chromium oxide-coated mica titanium, titanium oxide-coated glass powder, iron oxide-coated glass powder, titanium oxide-containing glass powder, and iron oxide-containing glass powder.

[0018] Examples of color pigments include metal oxides such as titanium oxide, yellow iron oxide, red iron oxide, black iron oxide, Prussian blue, ultramarine blue, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; inorganic pigments such as carbon black; synthetic organic pigments such as Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, and Blue 404; and natural organic pigments such as β-carotene, caramel, and paprika color.

[0019] Examples of the luster pigment that can be used include plate-like powders such as mica, synthetic phlogopite, glass, silica, and alumina, the surface of which is coated with a colorant such as titanium oxide, iron oxide, silicon oxide, iron blue, chromium oxide, tin oxide, chromium hydroxide, gold, silver, carmine, and organic pigments.

[0020] These powders can be used alone or in combination of two or more kinds. From the viewpoint of imparting a makeup effect that makes the skin look beautiful, the content is preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 0.1 to 8% by mass.

[0021] The powder cosmetic preparation of the present invention may further contain an oil component that is liquid at 25° C. A liquid has fluidity and includes a paste form. Such oil components may be any oils that are commonly used in cosmetics, such as hydrocarbon oils, ester oils, ether oils, silicone oils, and higher alcohols.

[0022] More specifically, examples of the hydrocarbon oil include straight-chain or branched-chain hydrocarbon oils such as squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, and petrolatum.

[0023] Ester oils include monoester oils, diester oils, triester oils and tetraester oils. Examples of monoester oils include monoesters of aliphatic or aromatic monocarboxylic or dicarboxylic acids having 2 to 24 carbon atoms. Specific examples include cetyl 2-ethylhexanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, hexyl laurate, isopropyl myristate, octyldodecyl myristate, myristyl myristate, 2-hexyldecyl myristate, isopropyl palmitate, octyl palmitate, 2-hexyldecyl palmitate, butyl stearate, isocetyl stearate, isocetyl isostearate, decyl oleate, isodecyl benzoate, octyl methoxycinnamate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, 2-ethylhexyl succinate, 2-hexyldecyl adipate, and alkyl benzoates (C12 to C15).

[0024] Examples of diester oils include diesters of dicarboxylic acids having 3 to 18 carbon atoms and difatty acid esters of polyhydric alcohols. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprate, glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monomyristate monoisostearate, glycerin di-2-heptylundecanoate, di-2-ethylhexyl succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, diisobutyl adipate, di-2-heptylundecyl adipate, and di-2-ethylhexyl sebacate.

[0025] Triester oils include tri-fatty acid esters of trivalent or higher polyhydric alcohols, and specific examples include glyceryl trimyristate, glyceryl triisopalmitate, glyceryl tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, tri(caprylic / capric)glyceryl, trioleate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, olive oil, and jojoba oil.

[0026] Examples of tetraester oils include tetra fatty acid esters of polyhydric alcohols having 4 or more valences, and specific examples thereof include pentaerythritol tetra(behenic acid / benzoic acid / ethylhexanoic acid), pentaerythritol tetraethylhexanoate, pentaerythritol tetraoctanoate, and pentaerythritol tetra-2-ethylhexanoate.

[0027] The ether oils include dialkyl ethers, specifically, dihexyl ether, dicaprylyl ether, cetyl-1,3-dimethylbutyl ether, and the like.

[0028] Examples of silicone oils include methylphenylpolysiloxanes such as dimethylpolysiloxane, methyltrimethicone, dimethylcyclopolysiloxane, and diphenylsiloxyphenyltrimethicone. Examples of volatile silicone oils include linear dimethylpolysiloxanes such as dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), and dimethylpolysiloxane (2cs); branched siloxanes such as methyltrimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane; and cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0029] Examples of higher alcohols include those having a straight or branched alkyl or alkenyl group having 10 to 24 carbon atoms, such as lauryl alcohol, myristyl alcohol, isocetyl alcohol, isostearyl alcohol, 2-octyldodecanol, and oleyl alcohol.

[0030] The oil components can be used alone or in combination of two or more. From the viewpoint of suppressing a powdery feel during application and obtaining a moist application feel, the content is preferably 10 mass % or less of the total composition, more preferably 6 mass % or less, even more preferably 2 mass % or less, and even more preferably substantially free.

[0031] The powder cosmetic of the present invention may contain, in addition to the above-mentioned components, components used in ordinary cosmetics, such as powders other than those mentioned above, oily components other than those mentioned above, surfactants, thickeners, preservatives, fragrances, UV absorbers, moisturizers, salts, solvents, antioxidants, chelating agents, neutralizing agents, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, disinfectants, skin activators, etc.

[0032] From the standpoint of consideration for the environment and excellent usability, the powder cosmetic of the present invention preferably contains no more than 1% by mass of organic resin powder in the total composition, more preferably no more than 0.1% by mass, and even more preferably is substantially free of organic resin powder. The content of spherical organic resin powder in the total composition is preferably 1% by mass or less, more preferably 0.1% by mass or less, and even more preferably substantially none. Examples of the organic resin powder include crosslinked or non-crosslinked organic resin powders such as powders of one or more polymers or copolymers selected from polyamide resin, nylon resin, polyester resin, polyethylene resin, polytetrafluoroethylene resin, polypropylene resin, polystyrene resin, benzoguanamine resin, polymethylbenzoguanamine resin, polyurethane resin, vinyl resin, fluororesin, acrylic resin, and melamine resin; butyl acrylate-vinyl acetate copolymer, styrene-acrylic acid copolymer, silicone resin, and divinylbenzene-styrene copolymer.

[0033] The powder cosmetic of the present invention can be produced according to a conventional method. For example, all powder components including components (A) and (B) are mixed uniformly, and other components are added and mixed further as necessary, followed by pulverization and sieving to produce a powdered cosmetic preparation.

[0034] The powder cosmetic of the present invention is in a powder form and does not include solid forms. Specific examples include makeup cosmetics such as powder foundation, face powder, face powder, blusher, and eye shadow; and body powders such as body powder and baby powder. Of these, face powder and face powder are preferred, and are suitable as powdered face powder (loose powder). EXAMPLES

[0035] Examples 1 to 9 and Comparative Examples 1 to 2 Powder cosmetics (loose powders) were produced with the compositions shown in Table 1, and were evaluated for moist feel, adhesion to the skin, uniformity of application, lack of dryness, unity with the skin (goodness of compatibility), and smoothness of the skin after application (feel when touching the skin). The results are also shown in Table 1.

[0036] (Manufacturing method) All powder ingredients including ingredients (A), (B) and (C) were mixed uniformly using a Henschel mixer, and other ingredients were added as necessary and further mixed, and then the mixture was pulverized using an atomizer and passed through a sieve. The mixture was then filled into a container to obtain a powder cosmetic (loose powder).

[0037] (Evaluation method) Five expert panelists applied each powder cosmetic product (loose powder) to the skin and evaluated it according to the following criteria: moist feel, adhesion to the skin, evenness of application, lack of dryness, sense of unity with the skin (goodness of blending), and smoothness of the skin after application (feel when touching the skin). The results are shown as the cumulative scores of the five panelists.

[0038] (1) Moist feel: 5;Very moist. 4;It's moist. 3; Slightly moist. 2;Not very moist. 1;Not moist.

[0039] (2) Skin Adhesion: 5;It feels very close to the skin. 4;It feels tight fitting. 3: There is a slight feeling of adhesion. 2: It doesn't feel very tight. 1: No sense of adhesion.

[0040] (3) Evenness of the finish: 5;It adheres very evenly to the skin. 4;It adheres evenly to the skin. 3: Fairly even application to the skin. 2: The application to the skin is not very even. 1;It doesn't adhere evenly to the skin.

[0041] (4) No dryness: 5;It doesn't feel very dry. 4. No dry feeling 3. Not too dry 2: Slightly dry feeling 1: Feels dry.

[0042] (5) Feeling of oneness with the skin (good compatibility): 5;It feels very one with the skin. 4;Feels like one with the skin. 3: There is a slight sense of unity with the skin. 2: It doesn't feel like it blends in with the skin. 1;It doesn't feel like it blends in with the skin.

[0043] (6) Smoothness of skin after application (feel when touching the skin): 5;The skin feels very smooth after application. 4;Skin feels smooth after application. 3: Skin feels slightly smooth after application. 2: The skin does not feel very smooth after application. 1; Skin is not smooth after application.

[0044] [Table 1]

[0045] Examples 10 to 11 All of the powder cosmetics (loose powders) with the compositions shown in Table 2 have a moist feel when applied, adhere well to the skin during application, adhere evenly to the skin, and feel one with the skin. After application, the skin feels smooth and has a non-drying finish.

[0046] [Table 2]

Claims

1. The following components (A) and (B): (A) an acyl amino acid, (B) Fatty acid metal salt and wherein the total content of components (A) and (B) is 46% by mass or more.

2. 2. The powder cosmetic according to claim 1, wherein the mass ratio of components (A) and (B) ((B) / (A))×100 is 3 to 45.

3. 3. The powder cosmetic according to claim 1, wherein the content of component (A) is 45 to 98% by mass, and the content of component (B) is 1 to 30% by mass.

4. 3. The powder cosmetic according to claim 1, further comprising (C) one or more selected from sulfates and carbonates.

5. 3. The powder cosmetic according to claim 1, wherein the content of component (C) is 0.2 to 40% by mass.

6. 3. The powder cosmetic according to claim 1, wherein the mass ratio of components (A) and (C) ((C) / (A))×100 is 0.2 to 60.