Powder cosmetic

Abstract

To provide powder cosmetics that retain a matte look, avoiding the accentuation of bumps or dullness over time, after application; prevent squeaky friction during application; and offer a smooth sensation immediately after application.SOLUTION: Powder cosmetics contain following components (A), (B) and (C): (A) spherical composite particles coated with metal oxide and anhydrous silicic acid, (B) anhydrous silicic acid, and (C) plate-like extender pigment.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 bright, transparent finish with a smooth and light feel when used. For example, Patent Document 1 describes that a powder cosmetic containing fine zinc oxide particles, a specific plate-like powder, a specific spherical powder, and a small amount of a colored pigment reduces powdery residue and creates a bright, translucent finish on the skin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-117653 A Summary of the Invention [Problem to be solved by the invention]

[0004] Powder cosmetics containing silicic anhydride and plate-like body pigments have the problem of being inferior in covering unevenness such as pores, and making dullness more noticeable. [Means for solving the problem]

[0005] The present inventors have discovered that a powder cosmetic that uses a combination of a plate-like body pigment and silicic anhydride, as well as spherical composite particles coated with a metal oxide and silicic anhydride, is matte even after a period of time has passed after application, does not show unevenness, and does not become dull, there is no squeaky feeling during application, and a smooth feel is obtained immediately after application.

[0006] The present invention comprises the following components (A), (B) and (C): (A) Spherical composite particles coated with metal oxide and silicic anhydride; (B) silicic anhydride, (C) Plate-shaped extender pigment The present invention relates to a powder cosmetic composition comprising the above-mentioned. Effect of the Invention

[0007] The powder cosmetic of the present invention has a matte finish even after the passage of time after application, does not show pores or unevenness, does not feel dull, and does not cause any squeaky friction (squeaky feeling) during application, and provides a smooth feel immediately after application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The component (A) used in the present invention is a spherical composite particle coated with a metal oxide and silicic anhydride. The spherical shape includes a perfect sphere, an approximately spherical shape, and a spheroid, and may be a spherical powder having an uneven surface. Examples of base particles for the spherical composite particles include aluminum silicate, alkali metal silicates, alkaline earth metal silicates, alkali metal aluminum silicates, alkaline earth metal aluminum silicates, combinations of these silicates, and the like. Among these, magnesium silicate and calcium silicate are preferred as the alkaline earth metal silicate, and sodium potassium aluminum silicate is preferred as the alkali metal aluminum silicate. The particle size of the spherical base particles is preferably from 0.1 to 100 μm, more preferably from 0.3 to 50 μm, and even more preferably from 0.5 to 15 μm. The particle size was measured using ethanol as a dispersion medium with a laser diffraction scattering type particle size distribution analyzer (LMS-350, manufactured by Seishin Enterprise Co., Ltd.) The particle size was measured based on volume.

[0009] The spherical composite particles of component (A) are coated with a metal oxide and silicic anhydride and contain silicic anhydride and one or more metal oxides, with the metal oxide being preferably titanium oxide. As component (A), an alkali metal aluminum silicate coated with titanium oxide and silicic anhydride is preferred, and sodium potassium aluminum silicate coated with titanium oxide and silicic anhydride is more preferred.

[0010] The particle size of the spherical composite particles of component (A) is preferably 0.1 to 100 μm, more preferably 0.2 to 60 μm, and even more preferably 0.5 to 25 μm, from the viewpoints of maintaining a matte finish even after the lapse of time after application and suppressing the visibility of pores and unevenness and dullness. The particle size is the same as that measured for the spherical base particles. As the component (A), for example, RONAFLAIR LDP WHITE (Merck) can be used.

[0011] One or more kinds of component (A) can be used, and the content is preferably 1% by mass or more in the total composition, more preferably 6% by mass or more, even more preferably 8% by mass or more, even more preferably 15% by mass or more, preferably 40% by mass or less, more preferably 30% by mass or less, even more preferably 28% by mass or less, and even more preferably 26% by mass or less, from the viewpoint of maintaining a matte finish even after a long time has passed since application and suppressing the visibility of pores and unevenness and dullness. The content of component (A) is preferably 1 to 40% by mass in the total composition, more preferably 6 to 30% by mass, even more preferably 8 to 28% by mass, and even more preferably 15 to 26% by mass.

[0012] The silicic anhydride of component (B) may be any that is commonly used in cosmetics, and from the viewpoint of preventing a squeaky feeling during application and providing a smooth feel immediately after application, it is preferable for the average particle size to be 1 to 30 μm, and more preferably 2 to 15 μm. The average particle size is a value measured by a laser diffraction scattering type particle size distribution analyzer (LMS-350, manufactured by Seishin Enterprise Co., Ltd.) using ethanol as a dispersion medium. The average particle size is the average particle size on a volume basis, and is the 50% median size. The component (B), silicic anhydride, may be used as is, or may be subjected to a hydrophobic treatment by a conventional method before use. The hydrophobization treatment is not limited as long as it is a treatment that is applied to ordinary cosmetic powders, and examples thereof include silicone treatment, amino-modified silicone treatment, fatty acid treatment, lauroyl lysine treatment, lecithin treatment, amino acid treatment such as N-acyl amino acid treatment, metal soap treatment, and the like.

[0013] From the viewpoint of preventing a squeaky feeling during application and obtaining a smooth feel immediately after application, the content of component (B) is preferably 1% by mass or more, more preferably 6% by mass or more, and even more preferably 9% by mass or more, and is preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 18% by mass or less in the total composition. The content of component (B) is preferably 1 to 30% by mass, more preferably 6 to 20% by mass, and even more preferably 9 to 18% by mass in the total composition. It should be noted that component (B) does not include the silicic anhydride contained in the coating of the spherical composite particles of component (A).

[0014] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.2 or more, more preferably 0.4 or more, even more preferably 0.5 or more, even more preferably 1 or more, preferably 20 or less, more preferably 4 or less, even more preferably 2.5 or less, and even more preferably 2.2 or less, from the viewpoints of maintaining a matte finish even after the passage of time after application, suppressing the visibility of pores and unevenness, not feeling dull, not feeling squeaky during application, and obtaining a smooth feel in use immediately after application. In addition, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.2 to 20, more preferably 0.4 to 4, even more preferably 0.5 to 2.5, and even more preferably 1 to 2.2.

[0015] Component (C) is a plate-shaped extender pigment. The average particle size of the component (C) is preferably from 1 to 70 μm, and more preferably from 2 to 60 μm, from the viewpoint of obtaining an excellent moist feeling and a smooth, soft feel. The average particle size is a value measured by a laser diffraction scattering type particle size distribution analyzer (LMS-350, manufactured by Seishin Enterprise Co., Ltd.) using ethanol as a dispersion medium. The average particle size is the average particle size on a volume basis, and is the 50% median size.

[0016] The extender pigment of component (C) may be any pigment other than component (B) that is commonly used in cosmetics, such as talc, sericite, boron nitride, mica, synthetic mica, synthetic phlogopite, kaolin, bentonite, barium sulfate, etc. Among these, from the viewpoint of obtaining an excellent moist feeling and a smooth and soft feel, it is preferable to contain one or more types selected from mica, synthetic mica, sericite and talc. The extender pigment of component (C), like component (B), may be used as it is, or may be subjected to a hydrophobic treatment by a conventional method before use.

[0017] One or more kinds of component (C) can be used, and the content is preferably 15% by mass or more, more preferably 20% by mass or more, and even more preferably 26% by mass or more, and is preferably 90% by mass or less, more preferably 50% by mass or less, and even more preferably 44% by mass or less, based on the viewpoint of obtaining an excellent moist feeling and a smooth and soft feel. The content of component (C) is preferably 15 to 90% by mass, more preferably 20 to 50% by mass, and even more preferably 26 to 44% by mass, based on the total composition.

[0018] In the present invention, the mass ratio (A) / (C) of component (A) to component (C) is preferably 0.12 or more, more preferably 0.15 or more, even more preferably 0.2 or more, even more preferably 0.35 or more, preferably 2 or less, more preferably 1.5 or less, even more preferably 1 or less, and even more preferably 0.9 or less, from the viewpoints of maintaining a matte finish even after the passage of time after application, suppressing the visibility of pores and unevenness, not feeling dull, not feeling squeaky during application, and obtaining a smooth feel immediately after application. The mass ratio (A) / (C) of component (A) to component (C) is preferably 0.12 to 2, more preferably 0.15 to 1.5, even more preferably 0.2 to 1, and even more preferably 0.35 to 0.9.

[0019] The powder cosmetic preparation of the present invention may further contain (D) barium sulfate-treated titanium oxide-coated mica, which can suppress the visibility of pores and unevenness and dullness. Like components (B) and (C), component (D) may be used as is, or may be subjected to a hydrophobic treatment by a conventional method before use. From the viewpoint of suppressing the visibility of pores and unevenness and dullness, the component (D) preferably has an average particle size of 1 to 70 μm, more preferably 2 to 50 μm, and even more preferably 5 to 30 μm. The average particle size is a value measured with a laser diffraction scattering type particle size distribution measuring device (Seishin Enterprise Co., Ltd., LMS-350) using ethanol as a dispersion medium. The average particle size is the average particle size on a volume basis, and is the 50% median size.

[0020] From the viewpoint of suppressing the visibility of pores and irregularities and dullness, the content of component (D) is preferably 1% by mass or more in the total composition, more preferably 2% by mass or more, even more preferably 3% by mass or more, even more preferably 5% by mass or more, preferably 20% by mass or less, more preferably 12% by mass or less, even more preferably 10% by mass or less, and even more preferably 9% by mass or less. Also, the content of component (D) is preferably 1 to 20% by mass in the total composition, more preferably 2 to 12% by mass, even more preferably 3 to 10% by mass, and even more preferably 5 to 9% by mass.

[0021] In the present invention, the mass ratio (A) / (D) of component (A) to component (D) is preferably 0.3 or more, more preferably 0.6 or more, even more preferably 1 or more, even more preferably 2 or more, preferably 20 or less, more preferably 10 or less, even more preferably 7 or less, and even more preferably 6 or less, from the viewpoints of maintaining a matte finish even after the passage of time after application, suppressing the visibility of pores and unevenness, not feeling dull, not feeling squeaky during application, and obtaining a smooth feel in use immediately after application, even if the application is continued for a long time, and the mass ratio (A) / (D) of component (A) to component (D) is preferably 0.3 to 20, more preferably 0.6 to 10, even more preferably 1 to 7, and even more preferably 2 to 6.

[0022] The powder cosmetic preparation of the present invention may further contain (E) an oil that is liquid at 25° C. The term “liquid” means one that has flowability, and includes a paste form. The oil agent of component (E) may be any oil agent that is commonly used in cosmetics, and examples thereof include hydrocarbon oils, ester oils, ether oils, silicone oils, and higher alcohols.

[0023] 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.

[0024] 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).

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The ether oils include dialkyl ethers, specifically, dihexyl ether, dicaprylyl ether, cetyl-1,3-dimethylbutyl ether, and the like.

[0029] 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.

[0030] 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.

[0031] From the viewpoint of obtaining a natural, non-powdery finish, it is preferable for the oil agent of component (E) to contain at least silicone oil.

[0032] Component (E) may be used alone or in combination of two or more, and the content is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, preferably 10% by mass or less, more preferably 6% by mass or less, and even more preferably 4% by mass or less, based on the total composition, from the viewpoint of obtaining a natural, non-powdery finish. The content of component (E) is preferably 0.1 to 10% by mass, more preferably 0.5 to 6% by mass, and even more preferably 1 to 4% by mass.

[0033] The powder cosmetic of the present invention may further contain powders other than components (A), (B), (C) and (D). Such powders may be those used in ordinary cosmetics, such as color pigments and luster pigments. 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.

[0034] 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.

[0035] From the standpoint of being environmentally friendly and providing excellent usability, the powder cosmetic of the present invention preferably contains no more than 1% by mass of organic resin powder such as microplastics in the total composition, more preferably no more than 0.1% by mass, and even more preferably is substantially free of such powder. Specifically, it refers to organic resin powder other than cellulose powder that has excellent biodegradability. 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.

[0036] 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.

[0037] The powder cosmetic of the present invention can be produced according to a conventional method. For example, all of the powder components including components (A), (B), and (C) are mixed and ground, and then an oil component is added and mixed as necessary, and the resulting mixture is further ground in a grinder to produce a powdered cosmetic preparation.

[0038] The powder cosmetic of the present invention is in the form of a powder. Specific examples of the powder cosmetic 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 the powder cosmetic is suitable as a powdered face powder (loose powder). EXAMPLES

[0039] Examples 1 to 7 and Comparative Examples 1 to 2 A powder cosmetic (loose powder) having the composition shown in Table 1 was produced, and the matte finish after 6 hours, the inconspicuousness of pore irregularities after 6 hours, the lack of dullness after 6 hours, The results were evaluated based on the smooth feel immediately after application and the absence of any rough, frictional sensation during application. The results are shown in Table 1.

[0040] (Manufacturing method) All powder ingredients including ingredients (A), (B) and (C) were mixed and ground, and then an oil was added and mixed. The resulting mixture was further ground in a grinder to obtain a powder cosmetic (loose powder).

[0041] (Evaluation method) (1) Matte finish after 6 hours: Five expert panelists applied each powder cosmetic (loose powder) to the skin using a puff, and then six hours later, the matte finish was evaluated according to the following criteria. The results were shown as the total score given by the five panelists. 5;It has quite a matte finish. 4;Has a matte finish. 3: Has a slightly matte finish. 2;It doesn't have much of a matte feel. 1;It doesn't have a matte feel.

[0042] (2) Reduction in the appearance of pore irregularities after 6 hours: Five expert panelists applied each powder cosmetic (loose powder) to the skin using a puff, and then six hours later, the degree to which the irregularities of pores were not noticeable was evaluated according to the following criteria. The results were shown as the total score given by the five panelists. 5;The unevenness of pores is not noticeable at all. 4;Imperfect pores are not noticeable. 3; The unevenness of pores is not very noticeable. 2: Pores are slightly more uneven. 1; Irregularities in pores are noticeable.

[0043] (3) Lack of dullness after 6 hours: Each powder cosmetic product (loose powder) was applied to the skin using a puff by five expert panelists, and then six hours later, the dullness of the skin was evaluated according to the following criteria. The results were shown as the total score of the five panelists. 5;No dullness at all. 4;No dullness. 3; I don't feel it is very dull. 2: Feels slightly dull. 1;Feels dull.

[0044] (4) Smooth feeling immediately after application: A panel of five experts evaluated each powder cosmetic (loose powder) on the basis of the following criteria with regard to the smooth feel immediately after application to the skin with a puff. 5;Feels very smooth. 4;Feels smooth. 3;Feels slightly smooth. 2;It doesn't feel very smooth. 1: It doesn't feel smooth.

[0045] (5) No rough, frictional sensation during application: A panel of five experts evaluated each powder cosmetic (loose powder) for its lack of a squeaky feeling (squeakiness) when it was applied to the skin with a puff, using the following criteria. The results were shown as the total score given by the five experts. 5;There is absolutely no squeaking sensation. 4;No squeaky feeling. 3;It doesn't feel very squeaky. 2: There is a slight squeaky feeling. 1: It feels squeaky.

[0046] [Table 1]

Claims

1. The following components (A), (B), and (C): (A) spherical composite particles coated with metal oxide and silicic anhydride; (B) silicic anhydride, (C) Plate-shaped extender pigment A powder cosmetic containing

2. 2. The powder cosmetic according to claim 1, wherein the content of component (A) is 1 to 40% by mass, the content of component (B) is 1 to 30% by mass, and the content of component (C) is 15 to 90% by mass.

3. 2. The powder cosmetic according to claim 1, wherein component (A) is an alkali metal aluminum silicate coated with titanium oxide and silicic anhydride.

4. 4. The powder cosmetic according to claim 2, wherein component (C) comprises one or more selected from the group consisting of mica, synthetic mica, sericite, and talc.

5. 4. The powder cosmetic according to claim 2, wherein the mass ratio (A) / (B) of component (A) to component (B) is 0.2 to 20.

6. 4. The powder cosmetic according to claim 2 or 3, further comprising: (D) 1 to 20% by mass of barium sulfate-treated titanium oxide-coated mica.