Powder cosmetic

Abstract

To provide powder cosmetics that are applied to skin and keep the skin free from uneven shine and stickiness after application for a long time, maintaining a smooth feel, resulting in a natural, non-powdery finish.SOLUTION: Powder cosmetics contain following components (A), (B) and (C): (A) amino-modified silicone-treated powder, (B) zinc oxide, and (C) an oil solution that is liquid at 25°C. The component (A) includes at least (A1) amino-modified silicone-treated spherical powder and (A2) amino-modified silicone-treated plate-like powder.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 and light feel when used and a uniform and natural finish. For example, Patent Document 1 describes that a powder cosmetic containing an amino-modified silicone-treated powder and plate-like zinc oxide spreads smoothly when applied, is free of any sense of strain on the skin such as a squeaky feeling, and further has excellent UV blocking effects and makeup-lasting effects without imparting an unnatural whiteness to the applied film. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-168636 A Summary of the Invention [Problem to be solved by the invention]

[0004] Although the amino-modified silicone-treated plate-like powder and zinc oxide used in conventional powder cosmetics have the ability to solidify sebum, human skin has an uneven structure similar to the texture and pores, and so sebum secreted from the sebaceous glands accumulates in the depressions, and the plate-like powder alone is unable to fix the sebum, resulting in uneven shine that occurs in patches. [Means for solving the problem]

[0005] The present inventors have discovered that by using amino-modified silicone-treated spherical powder in combination with amino-modified silicone-treated plate-like powder in a powder cosmetic, the spherical powder penetrates into the skin grooves and pores and solidifies quickly, improving uneven shine on the made-up skin, preventing uneven shine and stickiness even after the passage of time after application, maintaining a smooth feel, and providing a natural, non-powdery finish after application.

[0006] The present invention comprises the following components (A), (B) and (C): (A) Amino-modified silicone-treated powder, (B) zinc oxide, (C) Oil that is liquid at 25℃ and component (A) contains at least (A1) A spherical powder treated with amino-modified silicone; (A2) The present invention relates to a powder cosmetic comprising a plate-like powder treated with an amino-modified silicone. Effect of the Invention

[0007] The powder cosmetic of the present invention has high cosmetic durability, and therefore even after the passage of time after application, the skin does not become unevenly shiny or sticky, a smooth feel is maintained, and a natural, non-powdery finish can be obtained after application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The amino-modified silicone-treated powder of component (A) is a powder whose surface has been partially or entirely treated with amino-modified silicone, and the particle shape is not limited and may be, for example, spherical, acicular, plate-like, irregular, etc. 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 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, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, 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.

[0009] 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.

[0010] 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.

[0011] The amino-modified silicone used in treating such powders is preferably a silicone compound having an amino group or an ammonium group, and any compound can be used regardless of its form (liquid, solid, etc.), the presence or absence of a crosslinked structure, etc. The amino-modified silicone is preferably an amino-modified silicone having no cross-linked structure and / or an amino-modified silicone having a cross-linked structure, and more preferably an amino-modified silicone having a cross-linked structure.

[0012] An example of the amino-modified silicone having no crosslinked structure is one represented by the following general formula (1).

[0013] [ka]

[0014] (In the formula, R is a hydroxyl group, a hydrogen atom, or R a R a represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, and X is R a , -Q-NH(CH2) n NH2-OR a or a hydroxyl group, and Q represents a divalent hydrocarbon group having 1 to 8 carbon atoms. n represents a number from 1 to 5. p and q each represent a number whose number average sum is preferably 2 or more and less than 2000, more preferably 20 or more and less than 2000, and even more preferably 30 or more and less than 1000.

[0015] The amino equivalent of the amino-modified silicone is preferably from 200 g / mol to 30,000 g / mol, more preferably from 500 g / mol to 10,000 g / mol, and even more preferably from 600 g / mol to 5,000 g / mol. Here, amino equivalent means the mass of the siloxane skeleton per amino group or ammonium group. The unit of g / mol is the value converted per 1 mole of amino group or ammonium group. Therefore, the smaller the amino equivalent value, the higher the ratio of amino group or ammonium group in the molecule.

[0016] In addition, the amino-modified silicone is preferably 100 to 3000 mm thick, from the viewpoint of uniformly coating the powder and obtaining a uniform cosmetic film. 2 It is more preferable that the amino-modified silicone has a kinematic viscosity in the range of 100 / s (25°C). It may be used in the form of an emulsion. The amino-modified silicone emulsion can be prepared, for example, by mechanically mixing the amino-modified silicone with a solvent at high shear, by emulsifying the amino-modified silicone with water and an emulsifier, or a combination of these, or by emulsion polymerization.

[0017] A specific example of a suitable commercially available amino-modified silicone (kinetic viscosity (25° C.)) is SF8451C (manufactured by Dow Corning Toray Silicone Co., Ltd., kinetic viscosity 600 mm 2 / s, amino equivalent 1700g / mol), SF8452C (Toray Dow Corning Silicone Co., Ltd., kinematic viscosity 700mm 2 / s, amino equivalent 6400g / mol), SF8457C (Toray Dow Corning Silicone Co., Ltd., kinematic viscosity 1200mm 2 / s, amino equivalent 1800g / mol), KF8003 (Shin-Etsu Chemical Co., Ltd., kinematic viscosity 1850mm 2 / s, amino equivalent 2000g / mol), KF8004 (Shin-Etsu Chemical Co., Ltd., kinematic viscosity 800mm 2 / s, amino equivalent 1500g / mol), KF867S (Shin-Etsu Chemical Co., Ltd., kinematic viscosity 1300mm 2 / s, amino equivalent 1700g / mol), XF42-B8922 (Momentive Performance Materials, kinematic viscosity 70000mm 2 and amino-modified silicone oils such as SM8704C (manufactured by Dow Corning Toray Silicones, amino equivalent 1800 g / mol). They may also be produced by known production methods. One or more of these may be used.

[0018] The amino-modified silicone having a crosslinked structure is not particularly limited, but for example, a polymer having a silicone micro-three-dimensional crosslinked structure (hereinafter also referred to as "silicone micro-crosslinked product") obtained by condensation reaction of the following surface coating treatment agent (a) and the following surface coating treatment agent (b). In addition, the surface coating treatment agent (a) and the following surface coating treatment agent (b) can be produced by a known method, and a commercially available product can also be used.

[0019] Surface coating agent (a): a diorganopolysiloxane having reactive terminals, represented by the following general formula (2): R 1 R 2 2SiO-(R 2 2SiO) L -SiR 1 R 2 2(2) (In the formula, each R 1 represents a hydroxyl group, and each R 2 each independently represents a hydrocarbon group having 1 to 20 carbon atoms, and L represents an integer of 3 to 10,000.

[0020] Surface coating treatment agent (b): an amino group-containing silane compound represented by the following general formula (3): R 3 R 4 m Six (3-m) (3) (In the formula, R 3 represents a hydrocarbon group having 1 to 20 carbon atoms and having at least one amino group, R 4 represents an alkyl group having 1 to 4 carbon atoms, X represents an alkoxy group having 1 to 4 carbon atoms, and m represents 0 or 1.

[0021] The surface coating agent (a) is a diorganopolysiloxane having reactive terminals at both ends, and is a silicone modified with hydroxysilyl groups at both ends, represented by the above general formula (2). The form of the surface coating treatment agent (a) is not particularly limited, but in the present invention, it is preferred to use it in the form of an aqueous suspension or aqueous emulsion in terms of improving the feel, etc. The method for preparing this aqueous emulsion of (a) may be a conventional method, and examples thereof include a method of emulsion polymerization using a low molecular weight cyclic siloxane as a starting material, and a method of emulsifying an oily diorganopolysiloxane having reactive ends.

[0022] The surface coating treatment agent (b) is an amino group-containing silane compound, which is represented by the above general formula (3). The surface coating agent (b) is not particularly limited, but examples thereof include N-(2-aminoethyl)-3-aminopropyltriethoxysilane, 3-aminopropyltriethoxysilane, and 3-aminopropyltrimethoxysilane. In the general formula (3), an amino group-containing trialkoxy (carbon number 1 to 4) silane in which m=0 is preferable. In addition, R 3 The hydrocarbon group preferably has 1 to 10 carbon atoms. An example of a commercially available surface coating treatment agent (b) is aminopropyltriethoxysilane (KBE-903; manufactured by Shin-Etsu Chemical Co., Ltd.), but the present invention is not limited thereto, and the surface coating treatment agent (b) may be produced by a known method.

[0023] The silicone micro-crosslinked product obtained from the surface coating treatment agent (a) and the surface coating treatment agent (b) is not particularly limited, but from the viewpoint of excellent usability, etc., it is preferable that the mass ratio of the surface coating treatment agents (a) to (b) is (surface coating treatment agent (a)):(surface coating treatment agent (b))=100:0.1 to 100:35. The silicone microcrosslinked product is preferably a polymer that does not have rubber elasticity (i.e., rubber hardness). A polymer that does not have rubber hardness is one whose measured value in the measurement method (soft rubber hardness measurement) using a durometer type AO specified in ISO7619-1 is less than 10, more preferably less than 5.

[0024] Furthermore, the rheological properties of the silicone micro-crosslinked product are not particularly limited, but from the standpoint of excellent adhesion to the skin, etc., it is preferable that the complex modulus of elasticity in dynamic viscoelasticity measurement (25°C, strain rate 17%, shear frequency 4 Hz) be 3,000 to 100,000 Pa and the loss factor tan δ (loss modulus G" / storage modulus G') be 1.0 to 2.5. More preferably, the complex modulus is 10,000 to 100,000 Pa and the loss factor tan δ is 1.0 to 2.0.

[0025] The rheological properties of the slightly crosslinked silicone material can be measured as follows. Dynamic viscoelasticity measuring device: Rheosol-G3000 (UBM), Measurement fixture: 20mm diameter parallel plate, Measurement frequency: 4Hz, Measurement temperature: 25±1.0℃, Measurement distortion settings: Set the distortion rate to 17% and perform measurements in automatic measurement mode. Measurement sample thickness (gap): 1.0 mm, The shear frequency was set to 4 Hz because it is within the range of typical physical motion speeds for humans and is close to the speed at which cosmetics are applied to the skin.

[0026] In the component (A) used in the present invention, the method of coating the surface of these powders with amino-modified silicone is not particularly limited, but examples thereof include a dry coating method in which the amino-modified silicone and the powder are directly mixed and coated; a wet coating method in which the amino-modified silicone is dissolved or dispersed in an organic solvent (e.g., one or more selected from ethanol, isopropyl alcohol, n-hexane, etc.), the powder is added to this solution or dispersion, and after mixing, the solvent is removed by drying or the like, heated and pulverized; a mechanochemical method, etc. It is also possible to combine these methods appropriately.

[0027] In addition, in the component (A) used in the present invention, the method of surface-coating these powders with amino-modified silicone is not particularly limited, but for example, a method can be used in which the silicone micro-crosslinked product of the surface-coating treatment agent (a) and the surface-coating treatment agent (b) is precipitated on the powder particle surface in the presence of powder by in-situ method, and then heated to fix the silicone micro-crosslinked product on the particle surface.By this method, the uniformity of the coating on the powder particle surface can be increased, and a surface-coated powder can be obtained that has a better light feeling of use and better adhesion to the skin.

[0028] The component (A) thus obtained is a powder surface coated with amino-modified silicone, and the amount of the coating is not particularly limited. From the viewpoint of a smoother, lighter feel, a moist feeling, and excellent adhesion to the skin, the mass ratio of the powder to be surface-coated and the amino-modified silicone in the component (A) is preferably (powder to be surface-coated):(amino-modified silicone)=99.99:0.01 to 70:30, more preferably 99.9:0.1 to 90:10.

[0029] Examples of commercially available amino-modified silicone-treated powders of component (A) used in the present invention include, but are not limited to, mica Y-2300WA3 (manufactured by Yamaguchi Mica Co., Ltd.), EX-15WA3 (manufactured by Yamaguchi Mica Co., Ltd.), SE-S-100S (treated powder is sericite) (manufactured by Miyoshi Chemical Industries, Ltd.), SE-TA-13R, SE-TA-46R (treated powder is talc) (manufactured by Miyoshi Chemical Industries, Ltd.), MiyoSYN Fine-SE (treated powder is synthetic phlogopite) (manufactured by Miyoshi Chemical Industries, Ltd.), SE-MA-23 (treated powder is mica) (manufactured by Miyoshi Chemical Industries, Ltd.), NK-10WA3 (treated powder is synthetic phlogopite) (manufactured by Yamaguchi Mica Co., Ltd.), and PSG-05WA5 (treated powder is silicic anhydride) (manufactured by Yamaguchi Mica Co., Ltd.). These may also be produced by known methods.

[0030] As component (A) of the present invention, a product that has been treated simultaneously or separately with a treating agent other than amino-modified silicone (e.g., fatty acid, metal soap, fluorine compound, etc.) can also be used. Although not particularly limited, it is more preferable that the outermost layer of component (A) of the present invention is an amino-modified silicone, since the effects of the present invention can be more significantly exhibited.

[0031] Component (A) of the present invention is at least (A1) A spherical powder treated with amino-modified silicone; (A2) Contains a plate-like powder treated with amino-modified silicone. Component (A) comprises at least (A1) A spherical powder treated with amino-modified silicone; (A2) Obtained by adding a plate-like powder treated with amino-modified silicone.

[0032] The spherical powder of component (A1) is preferably spherical from the viewpoints of good adhesion to the skin and excellent spreadability without catching on the skin when applied. Here, spherical includes true spheres, nearly spheres, and spheroids, and may also be spherical powders with uneven surfaces. The average particle size of the spherical powder of component (A1) is preferably 1 to 50 μm, more preferably 1 to 35 μm, even more preferably 2 to 25 μm, and even more preferably 3 to 10 μm, from the viewpoints of providing good adhesion to skin grooves and pores and retaining secreted sebum. 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.

[0033] The spherical powder of component (A1) is one that is commonly used in cosmetics, and examples of the spherical powder include inorganic spherical powders such as silicic anhydride, calcium silicate, magnesium silicate, etc., and organic spherical powders such as polyamide resins, polyacrylic ester resins, polymethacrylic ester resins, polyurethane resins, silicone resins, polyethylene resins, polystyrene resins, cellulose resins, etc. As component (A1), silicic anhydride is preferred.

[0034] One or more kinds of component (A1) can be used, and the content is preferably 0.3% by mass or more in the total composition, more preferably 2% by mass or more, and even more preferably 3% by mass or more, and preferably 25% by mass or less, more preferably 20% by mass or less, and even more preferably 16% by mass or less, from the viewpoint of good adhesion to skin grooves and pores and retaining secreted sebum. The content of component (A1) is preferably 0.3 to 25% by mass in the total composition, more preferably 2 to 20% by mass, and even more preferably 3 to 15% by mass.

[0035] The average particle size of the platy powder of component (A2) is preferably 1 to 60 μm, more preferably 3 to 30 μm, and even more preferably 5 to 20 μm, from the viewpoints of good adhesion to the skin layer and retention of excess sebum. The aspect ratio of the platy powder of component (A2) is preferably 20 to 90, more preferably 40 to 80, from the viewpoints of good adhesion to the skin layer and retention of excess sebum. The average particle size is a value measured using a laser diffraction scattering type particle size distribution analyzer (Seishin Enterprise Co., Ltd., LMS-350) with ethanol as a dispersion medium. The average particle size is the average particle size on a volume basis, and is the 50% median diameter. The average particle thickness is a value obtained by measuring using an electron microscope and dividing the total value by the number of particles measured. The aspect ratio is a value obtained by dividing the particle size by the average particle thickness.

[0036] Examples of the plate-like powder of component (A2) include inorganic pigments such as boron nitride, silicic acid, silicic anhydride, magnesium silicate, sericite, talc, mica, kaolin, clay, bentonite, synthetic mica, synthetic phlogopite, mica titanium, titanium oxide-coated borosilicate, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, and composite pigments thereof. Specific examples of composite pigments include titanium oxide-coated mica, iron oxide-coated mica, iron oxide-coated mica titanium, barium sulfate-coated mica titanium, 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. The plate-like powder preferably contains one or more types selected from mica, synthetic mica, sericite, and talc, and more preferably contains at least synthetic mica.

[0037] One or more kinds of component (A2) can be used, and the content is preferably 0.3% by mass or more in the total composition, more preferably 2% by mass or more, and even more preferably 3% by mass or more, and preferably 25% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less, from the viewpoint of good skin adhesion and retention of excess sebum. The content of component (A2) is preferably 0.3 to 25% by mass in the total composition, more preferably 2 to 20% by mass, and even more preferably 3 to 15% by mass.

[0038] In the present invention, the mass ratio (A1) / (A2) of component (A1) to component (A2) is preferably 0.1 or more, more preferably 0.15 or more, even more preferably 0.2 or more, and is preferably 20 or less, more preferably 8 or less, and even more preferably 4 or less, from the viewpoints of high makeup durability, suppression of uneven shine and stickiness on the made-up skin even after the passage of time after application, sustained smooth feel, and obtaining a natural, non-powdery finish after application. In addition, the mass ratio (A1) / (A2) of component (A1) to component (A2) is preferably 0.1 to 20, more preferably 0.15 to 8, and even more preferably 0.2 to 4.

[0039] From the viewpoint of high makeup durability and suppressing uneven shine and stickiness of the made-up skin even after a long time has passed after application, the content of component (A) is preferably 1% by mass or more, more preferably 4% by mass or more, and even more preferably 6% by mass or more, and is preferably 51% by mass or less, more preferably 41% by mass or less, and even more preferably 31% by mass or less in the total composition. Also, the content of component (A) is preferably 1 to 51% by mass, more preferably 4 to 41% by mass, and even more preferably 6 to 31% by mass in the total composition.

[0040] The component (B) used in the present invention is zinc oxide, and any of those commonly used in cosmetics may be used. From the viewpoints of long cosmetic durability and sustained dry feel even after time has passed since application, component (B) preferably has an average particle size of 0.01 to 1 μm, more preferably 0.02 to 0.8 μm, and even more preferably 0.03 to 0.5 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.

[0041] 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 3% by mass or more, and even more preferably 4% by mass or more, preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 14% by mass or less, based on the viewpoints of high cosmetic durability and sustained dry feel even after time has passed since application. The content of component (B) is preferably 1 to 30% by mass, more preferably 3 to 20% by mass, and even more preferably 4 to 14% by mass, based on the total composition.

[0042] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.3 or more, more preferably 0.6 or more, even more preferably 1 or more, and is preferably 20 or less, more preferably 8 or less, and even more preferably 4 or less, from the viewpoints of high makeup durability, suppressing uneven shine and stickiness of the made-up skin even after the passage of time after application, sustaining a smooth feel in use, and obtaining a natural, non-powdery finish after application. In addition, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.3 to 20, more preferably 0.6 to 8, and even more preferably 1 to 4.

[0043] The powder cosmetic of the present invention may contain powders other than components (A) and (B), such as powders not treated with amino-modified silicones as exemplified in component (A) and powders that have been hydrophobized with other than amino-modified silicone treatments. These powders may also be used alone or in combination of two or more.

[0044] Component (C) is an oil that is liquid at 25° C. Liquid means that it has fluidity, and includes paste-like substances. The oil agent of component (C) 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.

[0045] 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.

[0046] 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).

[0047] 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.

[0048] 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.

[0049] 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.

[0050] The ether oils include dialkyl ethers, specifically, dihexyl ether, dicaprylyl ether, cetyl-1,3-dimethylbutyl ether, and the like.

[0051] Examples of silicone oils include dimethylpolysiloxane, methyltrimethicone, dimethylcyclopolysiloxane, and methylphenylpolysiloxanes such as 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.

[0052] 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.

[0053] From the viewpoint of obtaining a natural, non-powdery finish, it is preferable for the oil agent of component (C) to contain at least silicone oil.

[0054] Component (C) 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, and 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 (C) 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, based on the total composition.

[0055] 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.

[0056] 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) and (B) are mixed and ground, and then all of the oil components including component (C) are added and mixed, and the resulting mixture is further ground in a grinder to produce a powdered cosmetic preparation.

[0057] 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

[0058] Examples 1 to 7 and Comparative Examples 1 to 2 A powder cosmetic (loose powder) was produced with the composition shown in Table 1, and the cosmetic was evaluated for the absence of shine or unevenness on the made-up skin after 6 hours, the absence of stickiness after 6 hours, the smooth feel after 6 hours, and the natural, non-powdery finish. The results are also shown in Table 1.

[0059] (Manufacturing method) After all the powder ingredients including components (A) and (B) were mixed and ground, the oil of component (C) was added and mixed, and the resulting mixture was further ground in a grinder to obtain a powder cosmetic (loose powder).

[0060] (Evaluation method) (1) Evenness of shine on made-up skin after 6 hours: Five expert panelists applied each powder cosmetic (loose powder) to the skin using a puff, and then six hours later, the evenness of shine was evaluated according to the following criteria. The results were shown as the total score of the five panelists. 5;There is no uneven shine. 4;There isn't much uneven shine. 3: The shine is slightly uneven. 2;The shine is uneven. 1: The shine is quite uneven.

[0061] (2) Lack of stickiness after 6 hours: Each powder cosmetic product (loose powder) was applied to the skin using a puff by five expert panelists, and then the lack of stickiness after six hours was evaluated according to the following criteria. The results were shown as the total score of the five panelists. 5;Not sticky at all. 4;Non-sticky. 3;Not very sticky. 2: Slightly sticky. 1;It feels sticky.

[0062] (3) Smooth feel after 6 hours: Five expert panelists applied each powder cosmetic (loose powder) to the skin using a puff, and after six hours, the panelists evaluated the smooth feel of the product using the following criteria. The results were expressed as the total score given by the five panelists. 5;Feels very smooth. 4;Feels smooth. 3;Feels slightly smooth. 2;It doesn't feel very smooth. 1: It doesn't feel smooth.

[0063] (4) Natural, non-powdery finish: A panel of five experts evaluated each powder cosmetic (loose powder) on the naturalness and lack of powderiness of the skin after applying it to the skin with a puff, according to the following criteria. The results were shown as the total score of the five experts. 5;Completely natural and not powdery. 4;Natural and not powdery. 3;Natural and not too powdery. 2; Somewhat natural and powdery. 1;Natural and powdery.

[0064] [Table 1]

Claims

1. The following components (A), (B), and (C): (A) an amino-modified silicone-treated powder; (B) zinc oxide, (C) An oil that is liquid at 25°C and component (A) contains at least (A1) amino-modified silicone-treated spherical powder; (A2) A powder cosmetic comprising a plate-like powder treated with an amino-modified silicone.

2. 2. The powder cosmetic according to claim 1, wherein the content of component (A) is 1 to 51% by mass, the content of component (B) is 1 to 30% by mass, and the content of component (C) is 0.1 to 10% by mass.

3. 3. The powder cosmetic according to claim 2, wherein the content of component (A1) is 0.3 to 25% by mass, and the content of component (A2) is 0.3 to 25% by mass.

4. 4. The powder cosmetic according to claim 3, wherein the mass ratio (A1) / (A2) of component (A1) to component (A2) is 0.1 to 20.

5. 5. The powder cosmetic according to claim 3, wherein component (C) comprises at least a silicone oil.

6. The following components (A), (B), and (C): (A) an amino-modified silicone-treated powder; (B) zinc oxide, (C) An oil that is liquid at 25°C and component (A) contains at least (A1) amino-modified silicone-treated spherical powder; (A2) A powder cosmetic obtained by adding a plate-like powder treated with amino-modified silicone.