Solid powder cosmetic

Abstract

To provide a solid powder cosmetic that exhibits superior gloss and resistance to impact while offering favorable feeling in use.SOLUTION: A solid powder cosmetic comprising (A) a lustrous powder and (B) a binder, wherein the content of component (A) is at least 30 mass%, and wherein component (A) comprises: (A-1) 15-85 mass% of glass flakes having a thickness of 4-10 μm, a volume-based median diameter (D50) of 40-200 μm, and an aspect ratio of 4-50, the glass flakes being coated with at least one selected from a metal and a metal oxide, (A-2) 10-70 mass% of metal oxide-coated synthetic mica, and (A-3) 0-70 mass% of lustrous powder other than (A-1) and (A-2). The mass ratio [(A-1) / (A-2)] of component (A-1) to component (A-2) is preferably 0.5 / 1 to 8 / 1.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a solid powder cosmetic preparation that has excellent glossy finish, impact resistance, and feel when used. [Background technology]

[0002] Traditionally, solid powder cosmetics such as eye shadows have been required to have excellent gloss after application in order to create a dazzling effect on application sites such as the eyelids. Therefore, attempts have been made to increase the amount of glittering powder to enhance gloss after application. Glittering powders are flat powders with a remarkable reflective or interference gloss. Examples of glittering powders used in the cosmetics industry include metal oxide-coated flaky mica, metal oxide-coated flaky alumina, and metal oxide-coated flaky glass flakes. Among these, metal oxide-coated flaky glass flakes are particularly highly valued for their excellent gloss. For example, Patent Document 1 discloses a cosmetic containing a pearlescent pigment with an average thickness of 0.1 to 2.5 μm, which is made by coating glass flakes with titanium oxide. A specific example of its use is described as powder eye shadow (see Example 14).

[0003] However, when metal oxide-coated flaky glass flakes are used as glittering powders in preparing solid powder cosmetics, although they can produce solid powder cosmetics with excellent gloss, they also have the problem of reduced impact resistance and susceptibility to cracking during use. Therefore, efforts have been made to improve the impact resistance of solid powder cosmetics that use flaky glass flakes. For example, Patent Document 2 discloses a method of blending a metal soap with a granular powder to improve the impact resistance of solid powder cosmetics containing glittering powders such as metal oxide-coated glass flakes. This document also describes that using magnesium stearate as the metal soap results in solid powder cosmetics with good impact resistance (see Example 12 in Table 2), but that, on the other hand, using calcium palmitate, even with the same metal soap, does not provide sufficient impact resistance (see Comparative Example 9 in Table 2), and that spherical powders made of nylon, polymethyl methacrylate, silica, or silicone, or surface-treated versions of these, are preferred (see paragraph 0011). As described above, the invention described in this document requires the combination of a specific metal soap and a spherical powder, and the development of a new method with fewer restrictions has been desired.

[0004] On the other hand, the use of synthetic phlogopite as an ingredient in solid cosmetics is also known. For example, Patent Document 3 states that a solid cosmetic containing a hydrocarbon wax, synthetic phlogopite, spherical elastic powder, and trimethylsiloxysilicate "is prevented from shifting within the container or from cracking on the surface of the cosmetic even when subjected to vibrations that occur during transportation. Furthermore, the solid cosmetic is soft, has a mousse-like feel when taken with the fingers, changes to a powder when spread on the skin, and has an excellent powdery finish, allowing for an even, natural finish on the skin" (see paragraph 0007). While powder cosmetics containing synthetic phlogopite are publicly known, there are few prior art documents disclosing powder cosmetics containing glittering powders based on synthetic phlogopite. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-11340 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-020982 [Patent Document 3] Japanese Patent Application Publication No. 2017-066091 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] The present invention was completed in light of this background technology, and its object is to provide a solid powder cosmetic that is excellent in gloss and impact resistance, and also has an excellent feel when used. [Means for solving the problem]

[0007] As a result of extensive research aimed at solving these problems, the present inventors have discovered that in a solid powder cosmetic containing a high amount of glittering powder, when surface-coated glass flakes having a specific particle shape are used as the glittering powder in combination with metal oxide-coated synthetic phlogopite, a solid powder cosmetic having excellent gloss, impact resistance, and usability can be obtained without the need for a combination formulation of metal soap and spherical powder, and have thus completed the present invention.

[0008] Thus, according to the present invention, a powder containing (A) a glittering powder and (B) a binder is provided, and the content of the component (A) is at least 30% by mass, and the component (A) has a thickness of 4 to 10 μm and a volume-based median diameter (D 50 (A-1) 15 to 85 mass% of glass flakes having a diameter of 40 to 200 μm and an aspect ratio of 4 to 50 and coated with at least one selected from metals and metal oxides; (A-2) 10 to 70 mass% of metal oxide-coated synthetic phlogopite; and (A-3) 0 to 70 mass% of glittering powder other than (A-1) and (A-2). [Effects of the Invention]

[0009] The solid powder cosmetic of the present invention is excellent in glossy finish, impact resistance, and feel when used. DETAILED DESCRIPTION OF THE INVENTION

[0010] The solid powder cosmetic of the present invention contains, as essential components, (A) a glittering powder and (B) a binder. Each component will be described below.

[0011] (A) Glitter powder The glittering powder of component (A) used in the present invention has (A-1) a thickness of 4 to 10 μm and a volume-based median diameter (D 50 (A-1) 15 to 85 mass% of glass flakes having a diameter of 40 to 200 μm and an aspect ratio of 4 to 50 and coated with at least one selected from metals and metal oxides, (A-2) 10 to 70 mass% of metal oxide-coated synthetic phlogopite, and (A-3) 0 to 70 mass% of a glittering powder other than (A-1) and (A-2).

[0012] (A-1) Glass flakes coated with at least one material selected from metals and metal oxides The glass flakes in the present invention are obtained by crushing a glass film containing approximately 50 to 75 mass % of silica (SiO2). Although any type of glass, such as C glass, E glass, or TA glass, can be used, TA glass, which has a low heavy metal content, is preferably used from the standpoint of safety. Examples of metals that can coat the glass flakes include gold, silver, and nickel, and examples of metal oxides include titanium oxide, iron oxide, zirconium oxide, and silicon oxide. Of these, titanium oxide and iron oxide are preferably used. The surface of the surface-coated glass flakes may be further coated with silica, which can further improve durability.

[0013] The thickness of the surface-coated glass flakes of component (A-1) is preferably 4 to 8 μm, more preferably 4 to 6 μm, and the volume-based median diameter (D 50) is preferably 50 to 160 μm, more preferably 60 to 120 μm, and the aspect ratio is preferably 8 to 45, more preferably 10 to 40. When the thickness of the surface-coated glass flakes is less than 4 μm, a solid powder cosmetic can be obtained that has excellent gloss and a pleasant feel when used with little roughness, but impact resistance is significantly reduced. On the other hand, when the thickness of the surface-coated glass flakes is more than 10 μm, the decrease in impact resistance is suppressed, but gloss decreases and the cosmetic is more likely to become rough when used. When the volume-based median diameter of component (A-1) is less than 40 μm, gloss decreases, and when it exceeds 200 μm, impact resistance decreases. Furthermore, when the aspect ratio is less than 4, gloss decreases, and when it exceeds 50, impact resistance decreases.

[0014] The thickness of the surface-coated glass flakes can be determined by observing the shape of the surface-coated glass flakes using a scanning electron microscope (SEM), randomly selecting 10 glass flakes in the SEM photograph whose side faces forward, measuring the thickness of these glass flakes, and calculating the average value. 50 ) can be measured using a laser diffraction / scattering particle size distribution analyzer (LA-950, manufactured by Horiba, Ltd.). The aspect ratio is calculated from the ratio of the volume-based median diameter to the average thickness, and is defined as aspect ratio = volume-based median diameter / average thickness. In this specification, when these values ​​are listed in a catalog or the like provided by a manufacturer, the values ​​listed in the manufacturer's catalog are used.

[0015] Examples of commercially available products of component (A-1) include titanium oxide-coated glass flakes MT5090RS, MT5090RR, MT5090RY, MT5090RB, and MT5090RG (each with a base material thickness of 5 μm, D 50 90 μm, aspect ratio: 18), silver-coated glass flakes, MC5090PS (base thickness: 5 μm, D 50 ;90μm, aspect ratio;18), MC5150PS (base material thickness;5μm, D50 150 μm, aspect ratio: 30). Since the thickness of the coating layer in the surface-coated glass flakes is extremely small, the thickness of the surface-coated glass flakes, D 50 , and aspect ratio can be roughly equated to those values ​​for the glass flakes that are the base material.

[0016] Component (A) contains 15 to 85% by mass of component (A-1), preferably 20 to 85% by mass, and particularly preferably 25 to 80% by mass. The greater the proportion of component (A-1), the more improved the impact resistance. The content of component (A-1) in the entire cosmetic is preferably 5% by mass or more, and particularly preferably 10% by mass or more.

[0017] (A-2) Surface-coated synthetic phlogopite Component (A) contains component (A-1) and (A-2) surface-coated synthetic phlogopite. The proportion of component (A-2) relative to the total amount of component (A) is 10 to 70% by mass, preferably 15 to 60% by mass, and more preferably 20 to 50% by mass. As the proportion of component (A-1) in component (A) increases, impact resistance improves, but the gloss characteristic of glass flakes becomes insufficient and the product becomes more prone to feeling rough (i.e., the feel in use deteriorates). However, by using surface-coated synthetic phlogopite as component (A-2) in combination with component (A-1) in the above proportion, a cosmetic product excellent in all of gloss, impact resistance, and feel in use can be obtained. The mass ratio of component (A-1) to component (A-2) [component (A-1) / component (A-2)] can be selected as appropriate as long as the ratio of component (A-1) to component (A-2) in component (A) is within the above range, but is preferably 0.5 / 1 to 8 / 1, more preferably 0.6 / 1 to 7 / 1, and particularly preferably 0.8 / 1 to 6 / 1.

[0018] The surface-coated synthetic phlogopite of component (A-2) is a synthetic phlogopite whose surface is coated with a metal oxide, using synthetic phlogopite as a base material. Synthetic phlogopite is a substance obtained by a synthesis method in which hydroxyl groups in mica crystals are replaced with fluorine, and is commonly known as synthetic mica and its cosmetic labeling name is synthetic fluorophlogopite. Synthetic phlogopite has an extremely smooth surface, similar to natural mica, and is characterized by fewer impurities and higher transparency than natural mica. For these reasons, it is often used as a diluent or extender for colorants in powder cosmetics. The surface-coated synthetic phlogopite of component (A-2) in the present invention is a synthetic phlogopite whose surface is coated with a metal oxide, using such synthetic phlogopite as a base material, and has a pearlescent luster with higher color clarity than surface-coated mica using natural muscovite as a base material.

[0019] Specific examples of usable surface-coated synthetic phlogopite include synthetic phlogopite coated with titanium oxide, synthetic phlogopite coated with titanium oxide and iron oxide, synthetic phlogopite coated with titanium oxide and Blue No. 1, and synthetic phlogopite coated with titanium oxide, Blue No. 1, and Yellow No. 4. Of these, synthetic phlogopite coated with a coating agent containing titanium oxide is preferably used from the viewpoint of obtaining a cosmetic product with a good balance of gloss, impact resistance, and usability. In the case of synthetic phlogopite coated with a coating agent containing titanium oxide, tin oxide may be added to change the crystalline form of the titanium oxide to the rutile form. The thickness of the surface-coated synthetic phlogopite is 0.1 to 3.0 μm, and the volume-based median diameter (D 50 ) is 5 to 200 μm, aspect ratio (D 50 The thickness of the surface coating layer is preferably 10 to 300. Synthetic phlogopite without a surface coating layer does not exhibit brilliance and therefore does not correspond to component (A-2).

[0020] An example of a commercially available surface-coated synthetic phlogopite that can be used in the present invention is Helios R10S (thickness: 0.4 μm, D 50 10 μm, aspect ratio: 25), Helios R10G (thickness: 0.6 μm, D 50 10 μm, aspect ratio 16.7), Helios R20S (thickness 0.4 μm, D50 ;20μm, aspect ratio;50), Helios R20Y (thickness;0.5μm, D 50 ;20μm, aspect ratio;40), Helios R20R (thickness;0.5μm, D 50 ;20μm, aspect ratio;40), Helios R100S (thickness;1.1μm, D 50 100 μm, aspect ratio 91), Helios R100Y (thickness 1.2 μm, D 50 100 μm, aspect ratio 83), Helios R100R (thickness 1.2 μm, D 50 100 μm, aspect ratio: 83).

[0021] (A-3) A glittering powder that does not correspond to component (A-1) or component (A-2) In the present invention, component (A) may be composed only of components (A-1) and (A-2), but may also contain (A-3), a glittering powder that does not correspond to components (A-1) and (A-2), if necessary. However, as the amount of component (A-3) increases, the amount of component (A-1) inevitably decreases, resulting in a decrease in impact resistance. Therefore, it is preferable that the content of component (A-3) in component (A) be 70% by mass or less, and particularly 50% by mass or less.

[0022] The glittering powder that can be used as component (A-3) may be any powder that is used to impart luster in the field of powder cosmetics, and examples thereof include titanium oxide-coated mica (also known as titanium mica), iron oxide-coated mica, iron oxide-coated mica titanium, black iron oxide-coated mica titanium, iron oxide-black iron oxide-coated mica titanium, ferric iron ferrous ... Alternatively, surface-coated glass flakes other than those corresponding to component (A-1), such as titanium oxide-coated glass flakes, iron oxide-coated glass flakes, and metal-coated glass flakes, may be used. One or more of these may be used as needed. The glittering powder of component (A-3) is thinner than the surface-coated glass flakes of component (A-1). In the case of the surface-coated glass flakes, the average thickness is 3 μm or less, preferably 0.1 to 2.5 μm, and more preferably 0.3 to 2 μm, and the volume-based median diameter (D 50 Preferably, the flakes have a diameter of 40 to 200 μm and an aspect ratio of 4 to 100. Of these, surface-coated glass flakes that are thinner than component (A-1) are preferably used.

[0023] In the present invention, the content of component (A) is at least 30% by mass, preferably 30 to 90% by mass, more preferably 40 to 90% by mass, and particularly preferably 50 to 80% by mass, based on the total mass of the cosmetic. If the content of component (A) is less than 30% by mass, the glittering effect will be insufficient. Generally, press molding becomes difficult when the amount of glittering powder blended is large, but the powder cosmetic of the present invention can be easily press molded even when the amount of glittering powder blended is 30% by mass or more.

[0024] (B) Binder The solid powder cosmetic of the present invention contains component (B), a binder, to facilitate binding of the powder components. The blending amount of component (B) is typically 1 to 40 mass% of the total cosmetic, preferably 3 to 35 mass%, and more preferably 5 to 30 mass%. When the content of component (B) is within this range, a powder cosmetic having excellent gloss, impact resistance, and usability can be obtained.

[0025] The binder used as component (B) is not particularly limited as long as it is one that is commonly used in the field of powder cosmetics, and specific examples thereof include naturally occurring oils and waxes such as macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, hydrogenated coconut oil, hydrogenated oil, Japan wax, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, Ibota wax, lanolin, reduced lanolin, hard lanolin, and jojoba wax; hydrocarbons such as liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum, and microcrystalline wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, and undecylenic acid; higher alcohols such as cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, and cetostearyl alcohol; synthetic ester oils such as cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, triethylhexanoin, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, and pentane erythritol tetra-2-ethylhexanoate; Silicone oils such as linear polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and diphenylpolysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; and modified polysiloxanes such as amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, and fluorine-modified polysiloxanes; oil-soluble UV absorbers such as ethylhexyl methoxycinnamate; lipophilic surfactants such as sorbitan sesquiisostearate;Examples of suitable binders include liquid polyhydric alcohols such as polyethylene glycol with a molecular weight of less than 1,000, glycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, diglycerin, 1,2-pentanediol, 1,2-hexanediol, and 1,2-octanediol. These binders can be used alone or in combination with other compounds as needed.

[0026] Alternatively, silicone gel compositions can be used as component (B), in which silicone elastomers such as dimethicone crosspolymer, dimethicone / vinyl dimethicone crosspolymer, dimethicone / PEG-10 / 15 crosspolymer, and dimethicone / phenylvinyl dimethicone crosspolymer are swollen and dispersed in an oil. The inclusion of such silicone gel compositions can further improve the impact resistance and usability of powder cosmetics.

[0027] Commercially available silicone gel compositions include KSG-15 (a mixture of dimethicone / vinyl dimethicone crosspolymer and cyclopentasiloxane, elastomer content 5% by mass) manufactured by Shin-Etsu Chemical Co., Ltd., and KSG-16 (a mixture of dimethicone / vinyl dimethicone crosspolymer and dimethicone (6 mm). 2 / s) blend, elastomer content 25% by mass; KSG-42A (a blend of (vinyl dimethicone / lauryl dimethicone) crosspolymer and isododecane, elastomer content 25% by mass); DOWSIL EL-9080 Silicone Elastomer Blend (a blend of (dimethicone / vinyl dimethicone) crosspolymer and cyclopentasiloxane, elastomer content 13% by mass), DOWSIL EL-9048 Silicone Elastomer Blend (a blend of dimethicone crosspolymer and cyclopentasiloxane, elastomer content 13% by mass), and DOWSIL EL-9048 ID Silicone Elastomer, manufactured by Dow-Toray Industries, Inc. Blend (a mixture of dimethicone crosspolymer and isododecane, elastomer purity 16% by mass): Examples include Momentive's SFE839 (a mixture of (dimethicone / vinyl dimethicone) crosspolymer and cyclopentasiloxane, elastomer purity 5.5% by mass) and VELVESIL 125 (a mixture of cetearyl dimethicone crosspolymer and cyclopentasiloxane, elastomer purity 12.5% ​​by mass).

[0028] When a silicone gel composition is used as component (B), its amount is preferably 0.1 to 5 mass % of the total cosmetic, and more preferably 0.5 to 4 mass %, in terms of pure silicone elastomer content. When the amount of silicone gel composition is within this range, a solid powder cosmetic having superior impact resistance and usability can be obtained.

[0029] The solid powder cosmetic of the present invention can contain other optional components typically used in the field of powder cosmetics, provided that the effects of the present invention are not substantially impaired. Typical examples of optional components are powders other than the pigment component (A). The pigments may be either color pigments or extender pigments. Inorganic and organic color pigments are used as color pigments, while inorganic and organic extender pigments are used as extender pigments. Furthermore, any powder may be used regardless of its shape (spherical, acicular, plate-like, etc.), particle size (aerosol, fine particles, pigment-grade, etc.), or particle structure (porous, non-porous, etc.).

[0030] Examples of inorganic color pigments include inorganic white pigments such as titanium oxide and zinc oxide; inorganic red pigments such as red iron oxide and iron titanate; inorganic brown pigments such as γ-iron oxide; inorganic yellow pigments such as yellow iron oxide and ochre; inorganic black pigments such as black iron oxide and carbon black; inorganic purple pigments such as manganese violet and cobalt violet; inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide and cobalt titanate; and inorganic blue pigments such as iron blue and ultramarine.

[0031] Examples of organic color pigments include organic pigments such as Red No. 202, Red No. 226, Blue No. 404, and Yellow No. 401; lakes of dyes such as Red No. 104, Yellow No. 4, Yellow No. 5, and Blue No. 1; and lakes of natural dyes such as carminic acid, laccaic acid, and carthamine.

[0032] Extender pigments are used as appropriate for the purpose of improving the feel of use and impact resistance of solid powder cosmetics. Examples of extender pigments include inorganic extender pigments such as talc, muscovite, synthetic mica, phlogopite, synthetic fluorphlogopite, sericite, zeolite, kaolin, bentonite, clay, silicic acid, silicic anhydride (silica), magnesium silicate, magnesium aluminum silicate, calcium silicate, barium sulfate, magnesium carbonate, boron nitride, alumina, zirconium oxide, and hydroxyapatite; organic extender pigments such as silicone powder, silicone elastic powder, polyurethane powder, cellulose powder, nylon powder, silk powder, PMMA powder, starch, polyethylene powder, Fischer-Tropsch wax powder, hydrogenated oil powders such as hydrogenated rapeseed oil powder, candelilla wax powder, carnauba wax powder, rice wax powder, lauroyl lysine, and metal soap; and complexes thereof. Among these, from the viewpoint of impact resistance and gloss, synthetic phlogopite, boron nitride, talc, lauroyl lysine, hardened oil powder, carnauba wax powder, and other solid oil powders having a melting point of 60 to 150°C and a volume average particle size of 1 to 100 μm are preferably used.

[0033] The powder may be surface-treated. The surface treatment method is not particularly limited, and known surface treatment methods can be appropriately used, such as baking treatment with silicones such as methylhydrogenpolysiloxane and (dimethicone / methicone) copolymer, treatment with fatty acids such as stearic acid, treatment with fatty acid metal soaps such as aluminum stearate and zinc stearate, treatment with acylated amino acids, treatment with lipoamino acids which is a mixed treatment of acylated amino acids (salts) and fatty acids (salts), treatment with fluorine such as perfluoroalkyl phosphates, silylation treatment, and treatment with acidic esters such as isostearyl sebacate. All of the above surface treatment methods have the effect of hydrophobizing the powder surface, and using powders with hydrophobic surfaces has the effect of improving the water resistance and impact resistance of powder cosmetics.

[0034] When a powder is blended, the blending amount is usually 60 mass % or less, and preferably 50 mass % or less, of the total composition. By blending component (C), it is possible to adjust the ease of adhesion and spreadability to the skin, and the ease of application to a puff or tip.

[0035] Examples of optional ingredients other than powder include solid polyhydric alcohols such as polyethylene glycol, erythritol, sorbitol, and xylitol with a molecular weight of 1000 or more; moisturizing ingredients such as hyaluronic acid, sodium hyaluronate, sodium pyrrolidonecarboxylate, lactic acid, and sodium lactate; lower alcohols such as ethanol and isopropanol; vitamins; preservatives such as parabenzoic acid esters and phenoxyethanol; and ultraviolet absorbers.

[0036] Specific examples of the use forms of the solid powder cosmetic of the present invention include control colors, face colors, blushers, highlighters, and eye shadows, with eye shadows being particularly suitable.

[0037] The solid powder cosmetic of the present invention can be obtained by uniformly mixing the aforementioned components (A), (B), and other optional components according to a conventional method to obtain a mixed powder, which is then filled into a container or metal dish, etc., and pressed. Alternatively, one or more volatile solvents selected from water, lower alcohols, volatile silicones, light liquid isoparaffin, etc. may be added to the obtained mixed powder, followed by pressing and drying. The former is called a dry pressing method, and the latter is called a wet pressing method. While the wet pressing method generally provides excellent impact resistance, it is economically burdensome due to the complexity of the solvent recovery, equipment, and process. According to the present invention, sufficient impact resistance can be obtained even with dry pressing, thereby reducing the economic burden. [Example]

[0038] The present invention will be explained in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples. In the following description, the blending amounts in the formulations are expressed in mass % of the total amount unless otherwise specified. The solid powder cosmetics in the following examples and comparative examples were evaluated as follows.

[0039] (gloss, usability) To evaluate the gloss and feel in use, a test was conducted by a panel of 10 experts. The test was conducted by applying the sample to the face or eyelids of the panelists, and the evaluation was carried out using a 5-point sensory evaluation based on the following scoring criteria (scores). The average score of the panelists was used to judge the feel in use according to the following criteria. In this invention, the feel in use was evaluated by the absence of roughness.

[0040] (Score) 5 points: Excellent. 4 points: Excellent. 3 points: Average. 2 points: Poor. 1 point: Very poor. (Evaluation criteria) A: Average score of 4.0 or above B: Average score between 3.5 and 4.0 C: Average score between 2.5 and 3.5 D: Average score below 2.5 points

[0041] (hardness) The hardness of the sample press-molded onto a metal plate was measured at room temperature with an Olsen hardness tester (manufactured by Ueshima Seisakusho Co., Ltd.) under a load of 1 pound (0.45 kg). The measured value is penetration hardness, and the smaller the value, the harder the material.

[0042] (shock resistance) Products press-molded onto metal plates were dropped horizontally onto a concrete block from a height of 30 cm at room temperature to determine how many times they needed to be dropped before cracks, chips, or other damage occurred. Three evaluation samples were prepared for each product, and the number of times each sample needed to be dropped before damage occurred was determined, and the average (n=3) was calculated. The maximum number of drops was 11, and samples that did not break after 11 drops were recorded as >11.

[0043] Examples 1 to 2 and Comparative Examples 1 to 5 <Eyeshadow> The eye shadows having the formulations shown in Table 1 were prepared by the following method, and the gloss, feel during use, and impact resistance (number of drops required to cause breakage) were evaluated by the methods described above. The results are shown in Table 1.

[0044] (Manufacturing method) A: Mix ingredients 1 to 15. B: Add ingredients 16 to 20 to the mixture of ingredients 1 to 15 obtained in A above and mix. C: The mixture of components 1 to 20 obtained in B above was filled into a square metal dish (22 mm length x 30 mm width x 3.8 mm height) and pressed into a solid powder eye shadow at a pressure of 2 MPa using a hydraulic press with a cylinder diameter of 50 mmφ.

[0045] [Table 1]

[0046] As can be seen from the results in Table 1, the eye shadows of the present invention (Examples 1 and 2) were excellent in gloss, impact resistance, and feel when used. In contrast, when glitter powder not containing component (A-1) was used, impact resistance was poor (Comparative Examples 1 to 3), and when component (A-2) was not contained, feel when used was poor (Comparative Examples 4 and 5). In particular, when the glitter powder contained only component (A-1), gloss was also insufficient (Comparative Example 5).

[0047] Examples 3 to 7 and Comparative Example 6 <Eyeshadow> The eye shadows having the formulations shown in Table 2 were prepared by the following method, and the gloss, impact resistance, and impact resistance (number of drops required to cause breakage) were evaluated by the methods described above. The results are shown in Table 2.

[0048] (Manufacturing method) A: Mix ingredients 1 to 25. B: Add ingredients 26 to 31 to the mixture of ingredients 1 to 25 obtained in A above and mix. C: The mixture of components 1 to 31 obtained in B above was filled into a square metal dish (22 mm length x 30 mm width x 3.8 mm height) and pressed using a hydraulic press with a cylinder diameter of 50 mmφ, adjusting the press pressure so that the hardness fell within the range of 25 to 40, to obtain a solid powder eye shadow.

[0049] [Table 2]

[0050] As can be seen from the results in Table 2, the eye shadows of Examples 3 to 7 were excellent in gloss, impact resistance, and feel when used. In particular, when silicone elastomer gel was used as component (B) (Example 5), impact resistance and feel when used were superior compared to when triethylhexanoin was used as component (B) (Example 6). Furthermore, when component (A-2) was not included (Comparative Example 6), the eye shadows felt rough and had an inferior feel when used. [Industrial Applicability]

[0051] According to the present invention, a solid powder cosmetic preparation is provided which has excellent glossy finish, impact resistance, and feel when used.

Claims

1. (A) A glittering powder and (B) a binder are included, and the content of the component (A) is at least 30 mass % or more, and the component (A) has a thickness of 4 to 10 μm and a volume-based median diameter (D ５０ (A-1) 15 to 85 mass % of glass flakes having a diameter of 40 to 200 μm and an aspect ratio of 4 to 50 and coated with at least one selected from metals and metal oxides; (A-2) 10 to 70 mass % of metal oxide-coated synthetic phlogopite; and (A-3) 0 to 70 mass % of glittering powder other than (A-1) and (A-2).

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

3. 3. The solid powder cosmetic preparation according to claim 1, wherein the component (A) comprises 20 to 85% by mass of the component (A-1) and 15 to 60% by mass of the component (A-2).

4. 3. The solid powder cosmetic according to claim 1, wherein the component (A-2) is titanium oxide-coated synthetic phlogopite.

5. 3. The solid powder cosmetic according to claim 1, wherein the content of component (B) is 3 to 35% by mass.

6. 3. The solid powder cosmetic according to claim 1, wherein the mass ratio of component (A-1) to component (A-2) [(A) / (B)] is 0.5 / 1 to 8 / 1.

7. 3. The solid powder cosmetic according to claim 1, wherein the component (B) is a silicone elastomer gel.

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