Solid Powder Cosmetics

Abstract

To provide solid powder cosmetics that can be easily taken up onto an applicator and easily applied to the skin, while giving an excellent clear feeling to the skin.SOLUTION: The foregoing problem is solved by solid powder cosmetics or the like comprising (A) spherical silica, (B) a white pearl pigment, and (C) a pearl pigment with its interference color being violet.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a solid powder cosmetic containing a coloring pigment.

Background Art

[0002] A solid powder cosmetic is a cosmetic that mainly consists of a powder component, to which an oily component is added and mixed, pulverized, and then formed into a solid by forming means such as a compression molding method or a wet filling method. Solid powder cosmetics are used as makeup cosmetics such as foundation, eyeshadow, white powder, and blusher, and body care cosmetics such as body powder.

[0003] Solid powder cosmetics are used by scraping them from a container using an applicator such as a sponge, puff, chip, or brush and then applying them to the skin, or directly applying them to the skin. Therefore, solid powder cosmetics are required to have good transferability (takuri) to the applicator and the skin. If the takuri of the solid powder cosmetic is poor, a sufficient amount of the cosmetic does not adhere to the applicator or the like, and the usability is significantly impaired.

[0004] In addition, solid powder cosmetics used particularly for base makeup such as foundation are required to have transparency so that they do not give an unnatural and artificial finish when applied to the skin. A solid powder cosmetic with excellent transparency can brighten the skin, make the skin look brighter, not have too strong a concealer effect (exhibit a moderate covering power), fit the skin, and not look flat, thereby giving the skin a bright and natural finish when applied.

[0005] As a solid powder cosmetic with a good finish, a solid powder cosmetic containing spherical silica and a pearl pigment is known (see, for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] The inventors of the present invention have studied improving the pick-up property of a solid powder cosmetic that has relatively poor pick-up property and is prone to caking. As a result, it has been found that, as in the solid powder cosmetics described in Patent Documents 1 and 2, using spherical silica can improve the pick-up property and further achieve a smooth spread on the skin.

[0008] Spherical silica is a very hard raw material component. Although it has a strong scratchy feeling, it is spherical, so it is considered that a rolling feeling can be obtained, the pick-up property of the solid powder cosmetic can be improved, and the usability can be made smooth.

[0009] However, since spherical silica has a soft focus effect that diffusely reflects light, solid powder cosmetics containing spherical silica tend to impair the transparency of the skin and result in an unnatural finish. According to the investigation by the inventors of the present invention, the solid powder cosmetics described in Patent Documents 1 and 2 were not satisfactory in terms of the transparency of the skin.

[0010] Therefore, an object of the present invention is to provide a solid powder cosmetic that has good pick-up property and excellent transparency when applied to the skin. [Means for Solving the Problems]

[0011] In order to solve the above problems, the inventors of the present invention have variously studied thousands of cosmetic ingredients, and while including spherical silica to improve the pick-up property, they have repeatedly tried and erred to obtain a solid powder cosmetic that is excellent in transparency when applied to the skin. Among them, they focused on pearl pigments.

[0012] As a result of the inventors' further study on pearl pigments with various interference colors, it was found that some pearl pigments give a transparent feeling to the skin while others do not. Also, even those that give a transparent feeling were not sufficient to compensate for the lost transparency due to spherical silica.

[0013] Therefore, as a result of the inventors' further intensive research and development, they finally succeeded in obtaining a solid powder cosmetic with good texture and excellent transparency when applied to the skin by combining and blending spherical silica, a white pearl pigment, and a pearl pigment with a purple interference color. That is, the inventors succeeded in creating a solid powder cosmetic containing a combination of spherical silica, a white pearl pigment, and a pearl pigment with a purple interference color as a solution to the problems of the present invention. The present invention was completed based on these findings and successful examples.

[0014] Therefore, according to the present invention, solid powder cosmetics of the following aspects are provided. [1] (A) Spherical silica, (B) A white pearl pigment, (C) A pearl pigment with a purple interference color and a solid powder cosmetic containing the same. [2] The solid powder cosmetic according to [1], wherein the component (A) has a particle size of 1 μm to 18 μm. [3] The solid powder cosmetic according to any one of [1] to [2], wherein the component (B) has a particle size of 0.5 μm to 100 μm and / or the component (C) has a particle size of 0.5 μm to 100 μm. [4] The solid powder cosmetic according to any one of [1] to [3], wherein the content of the component (A) is 0.1% by mass to 7% by mass. [5] The solid powder cosmetic according to any one of [1] to [4], wherein the total content of the component (B) and the component (C) is 0.2% by mass to 10% by mass. [6] The solid powder cosmetic according to any one of [1] to [5], wherein the ratio of the content of the component (B) to the content of the component (C) is 6:0.5 to 0.5:6. [Effects of the Invention]

[0015] According to the solid powder cosmetic of one aspect of the present invention, it is possible to improve the take-off when rubbed with a sponge or the like, and when further applied to the skin, it can brighten the skin with an appropriate gloss and achieve a natural finish with a transparent feeling. As a result, according to the solid powder cosmetic of one aspect of the present invention, a very excellent usability can be expected for those who use the solid powder cosmetic.

[0016] The solid powder cosmetic of one aspect of the present invention has good take-off and transparency, and further has good elongation, and can achieve a covering power and a lasting finish that make pores and fine wrinkles less noticeable. Thus, the solid powder cosmetic of one aspect of the present invention is easy to use, and with a lasting natural finish, it can be suitably used as makeup cosmetics such as foundation, eyeshadow, powder, and blusher for beautifying the skin.

Embodiments for Carrying Out the Invention

[0017] Hereinafter, the details of the solid powder cosmetic which is one aspect of the present invention will be described, but the present invention can take various aspects as long as its object is achieved.

[0018] Each term in this specification is used in the meaning usually used by those skilled in the cosmetic field unless otherwise specified, and should not be construed as having an unduly limiting meaning. Also, the theories and speculations made in this specification are based on the knowledge and experience of the inventors so far, and thus the technical scope of the present invention is not limited only by such theories and speculations.

[0019] 「and / or」 means any one of the plurality of related items listed, or any combination or all combinations of two or more. "Content" is synonymous with "concentration" and means the ratio of the amount of a component to the total amount of the solid powder cosmetic. However, the total content of each component does not exceed 100%. In this specification, unless otherwise specified, the unit of content means "mass% (wt%)". Note that when using a commercial product, the content of the component is preferably the amount of the component contained in the commercial product, but it may also be the amount of the commercial product itself. In this specification, "~" for a numerical range means a range including the numerical values before and after it. For example, "0 mass% ~ 100 mass%" means a range that is 0 mass% or more and 100 mass% or less. "Exceeding" and "less than" respectively mean the lower limit and the upper limit that do not include the numerical value before them. For example, "exceeding 1" means a numerical value greater than 1, and "less than 100" means a numerical value less than 100. "About" with respect to a numerical value means including a range of ±20% of the stated numerical value. For example, about 10 mass% becomes 8 mass% to 12 mass%. "Containing" means that elements other than the elements explicitly stated as being included can be added (synonymous with "at least containing"), and includes "consisting of" and "essentially consisting of". That is, "containing" can mean including the explicitly stated elements and any one or two or more elements, consisting of the explicitly stated elements, or essentially consisting of the explicitly stated elements. Examples of elements include restrictive matters such as components, steps, conditions, and parameters. The solid powder cosmetic for which "tore" is good refers to the solid powder cosmetic that has been evaluated as "○" (qualified) by performing the "tore evaluation" described in the examples below. The solid powder cosmetic for which "transparency" is good refers to the solid powder cosmetic that has been evaluated as "○" (qualified) by performing the "transparency evaluation" described in the examples below.

[0020] The number of digits of an integer value coincides with the number of significant figures. For example, the significant figure of 1 is 1 digit, and the significant figure of 10 is 2 digits. Also, for a decimal value, the number of digits after the decimal point coincides with the number of significant figures. For example, the significant figure of 0.1 is 1 digit, and the significant figure of 0.10 is 2 digits.

[0021] The solid powder cosmetic of one embodiment of the present invention contains spherical silica (component (A)), a white pearl pigment (component (B)), and a pearl pigment with an interference color of purple (component (C)). The solid powder cosmetic of one embodiment of the present invention has good take-up due to the spherical silica of component (A) and good transparency due to the two types of pearl pigments of components (B) and (C), and thus can be used as a very excellent makeup cosmetic.

[0022] The spherical silica of component (A) is a spherical powder of colloidal anhydrous silicic acid as is commonly known. Due to the rolling effect of the spherical silica, the friction is reduced, so the solid powder cosmetic has increased stretchability and good transferability (take-up) to the applicator and good texture (feel of use). Component (A) is preferably spherical silica for expressing a good rolling effect.

[0023] On the other hand, compared with amorphous silica, spherical silica is more likely to be regularly aligned, so the soft focus effect is enhanced. Thereby, wrinkles and spots on the skin can be effectively hidden, but the glossiness decreases, a matte feeling occurs, and the transparency of the skin tends to be impaired. Porous spherical silica has an oil adsorption function. This is exerted by adsorbing oils such as sebum and odor components into the pores on the surface of the spherical silica. Component (A) may be non-porous spherical silica, but if an oil adsorption function is expected, it is preferably porous spherical silica.

[0024] Regarding component (A), physical properties such as the average particle diameter, specific surface area, pore volume, and pore diameter are not particularly limited. However, if the average particle diameter of component (A) is too large, the soft focus effect may become excessive, potentially impairing the transparency of the skin. Therefore, in order to prevent the soft focus effect from becoming excessive, for example, the average particle diameter of component (A) is preferably 0.5 μm or more and less than 20 μm, more preferably 1 μm to 18 μm, and even more preferably 3 μm to 12 μm. The average particle diameter is the number-average particle diameter, which is obtained by observing the particles of spherical silica with a scanning electron microscope (SEM), measuring the particle diameters of 100 or more randomly selected particles, and averaging the measured values.

[0025] The specific surface area, pore volume, and pore diameter of component (A) are preferably values that can achieve a certain degree of oil absorption and shape stability. For example, the specific surface area is preferably 100 m 2 / g to 1,000 m 2 / g, more preferably 500 m 2 / g to 800 m 2 / g, and even more preferably about 700 m 2 / g; the pore volume is preferably 0.5 ml / g to 10 ml / g, more preferably 1 ml / g to 5 ml / g; and the pore diameter is preferably less than 30 nm, more preferably 20 nm or more and less than 30 nm. The specific surface area, pore volume, and pore diameter are measured by the nitrogen adsorption / desorption method or the mercury intrusion method.

[0026] Component (A) may be manufactured according to a conventional method or commercially available. The manufacturing method of component (A) is not particularly limited, and examples include the method described in Japanese Patent No. 4193626. Commercially available products of component (A) include, for example, "Sunfair (registered trademark) H-32", "Sunfair (registered trademark) H-52", "Sunfair (registered trademark) H-122" (manufactured by AGC SI TECH Co., Ltd.), "Cosmesilica CQ10" (manufactured by Fuji Silysia Chemical Ltd.), "SILICA MICRO BEAD P-1500", "SATINIER M5" (manufactured by JGC Catalysts & Chemicals Ltd.), "Godball (registered trademark) D-25C" (manufactured by Suzuki Oil & Fat Co., Ltd.), etc. These can be used alone or in combination of two or more. When component (A) is a commercially available product, the physical properties of component (A) may be the nominal values of the manufacturer or seller.

[0027] The content of component (A) is not particularly limited as long as it is an amount that improves the take-out of the solid powder cosmetic. However, when the content of component (A) is large, the take-out of the solid powder cosmetic becomes excessive, and when the content of component (A) is further excessive, the strength of the solid powder cosmetic is inferior and the moldability tends to be impaired. Therefore, the content of component (A) is preferably an amount that does not cause problems in the moldability of the solid powder cosmetic. For example, the content of component (A) is preferably 0.05% by mass or more and less than 8% by mass, more preferably 0.1% by mass to 7% by mass, and even more preferably 0.3% by mass to 5% by mass, based on the total amount of the solid powder cosmetic. Note that when the content of component (A) is 8% by mass or more, the moldability of the solid powder cosmetic tends to deteriorate significantly, which is not preferable.

[0028] The pearlescent pigments of component (B) and component (C) each have a white luster or a purple interference color. By including the spherical silica of component (A), the solid powder cosmetic, due to the soft focus effect of the spherical silica, when applied to the skin, has an enhanced concealing effect, does not conform to the skin, and becomes dull, resulting in a loss of transparency and a tendency towards an unnatural finish. However, by including the spherical silica of component (A) together with the two types of pearlescent pigments of components (B) and (C), the solid powder cosmetic maintains a good texture while the above-mentioned phenomena that occur when applied to the skin are alleviated and / or suppressed, resulting in good transparency and a natural finish.

[0029] Moreover, surprisingly, by including the white pearlescent pigment of component (B) and the pearlescent pigment with a purple interference color of component (C), an excellent transparency can be achieved and a more natural finish can be realized compared to the case of using either one alone or two types of pearlescent pigments described in Patent Document 2, one with an orange interference color and the other with a purple interference color. The color tones of components (B) and (C) can be confirmed, for example, by applying them to a black background substrate such as black artificial leather and visually observing, or by measuring the color tone using a colorimeter. The color tone of component (B) includes those from milky white like true pearl luster to silver white (silver white) with a bright gray like metallic luster, and silver (silver). The color tone of component (C) may be confirmed with reference to [Measurement of Interference Color] described in Patent Document 2. Also, the color tone of component (C) may correspond to purple from the abbreviation 1P to 3P of the hue shown in the Ostwald color system. In this specification, the white pearlescent pigment is also referred to as silver pearl, and the pearlescent pigment with a purple interference color is also referred to as purple pearlescent pigment or purple interference pearl. Also, depending on the difference in interference color, it may be referred to as interference pearl for each color.

[0030] Examples of the pearl pigment include natural pearl pigments such as fish scale foil; synthetic pearl pigments such as bismuth oxychloride; and metal oxide-coated pearl pigments obtained by coating substrates such as mica, mica powder, aluminum oxide, talc, aluminum powder, and borosilicate with metal oxides such as titanium oxide, tin oxide, iron oxide, zirconium oxide, and alumina. As long as components (B) and (C) each have a white gloss or a purple interference color, they may be used alone or in combination of two or more of the above-mentioned ones. However, since they are resistant to ultraviolet rays and are easy to manufacture and obtain, they are preferably metal oxide-coated pearl pigments. It is preferably a metal oxide-coated pearl pigment obtained by coating mica, mica powder, or talc as a substrate with titanium oxide and optionally tin oxide as metal oxides. From the viewpoint of richness of color tone and vividness of color development, those using mica powder as a base are more preferable.

[0031] Physical properties such as the particle size of the pearl pigment are not particularly limited, and those with various physical properties can be used. However, if the particle size of the pearl pigment is too large, the graininess of the pearl pigment becomes strong, and the brightness due to the unique luster of the pearl tends to increase. Therefore, the particle size of the white pearl pigment of component (B) is preferably in the range of 0.5 μm to 100 μm, more preferably in the range of 1 μm to 60 μm, and even more preferably 9 μm to 45 μm, for example, based on volume cumulative standard (D10 to D90). Similarly, the particle size of the purple pearl pigment of component (C) is preferably in the range of 0.5 μm to 100 μm, more preferably in the range of 1 μm to 60 μm, and even more preferably 9 μm to 45 μm, for example, based on volume cumulative standard (D10 to D90). The particle size of the pearl pigment is measured using a particle size distribution measuring device such as "Mastersizer 2000" (manufactured by Malvern Panalytical).

[0032] Pearl pigments may have undergone surface treatment aimed at modifying the surface. Examples of surface treatment include surface hydrophobization treatment using, for example, methicone, triethoxycaprylylsilane, (alkyl acrylate / dimethicone) copolymer, methicone / hydrogen dimethicone / dimethicone, isopropyl titanate triisostearate, methylhydrogenpolysiloxane, etc.; natural treatment using magnesium stearate, hydrogenated lecithin, etc.; amino acid treatment using lauroyl lysine, sodium lauroyl glutamate, lysine, sodium lauroyl aspartate, etc. Considering dispersibility and adhesion to the skin, surface hydrophobization treatment is preferably used, and surface hydrophobization treatment using methicone or triethoxycaprylylsilane is more preferably used.

[0033] Component (B) and component (C) may be either manufactured according to a conventional method or commercially available. Examples of commercially available products of component (B) include, for example, "Cosmetica Super White N-8000S", "Cosmetica Super White N-8000S-2S", "Cosmetica Super White N-8000D", "Cosmetica Natural Super White N-8001S", "Cosmetica Super Fine White N-8003D" (manufactured by CQV), "Timiron Halo White", "Timiron Super Silver Fine", "Timiron Starluster MP-115" (manufactured by Merck), "FLAMENCO Pearl 110C", "FLAMENCO Satina 120T" (manufactured by BASF), "TWINCLE PEARL 200", "SILSEEM Misty Pearl Silver" (manufactured by Nippon Koken Kogyo Co., Ltd.), "DK PEARL SILVER2" (manufactured by Tohto Kasei Kogyo Co., Ltd.), etc. One of these can be used alone or in combination of two or more. Examples of commercially available products of component (C) include, for example, "Cosmetica Super Violet N-5601S", "Cosmetica Super Violet N-5601S-2S", "Cosmetica Daisy Violet N-5603S", "Cosmetica Fine Violet N-5601D" (manufactured by CQV), "FLAMENCO VIOLET 520C", "FLAMENCO SPARKLE VIOLET 520J", "FLAMENCO SATIN VIOLET 560M" (manufactured by BASF), "Timilon Super Violet", "Timilon Splendid Violet" (manufactured by Merck), "TWINCLE PEARL VXC-SO" (manufactured by Nippon Koken Kogyo Co., Ltd.), "DK PEARL-IF VIOLET" (manufactured by Tohto Kasei Kogyo Co., Ltd.), "KTZ INTERFINE VIOLET" (manufactured by KOBO), etc. One of these can be used alone or in combination of two or more.When Components (B) and (C) are commercially available products, the physical properties and color tones of Components (B) and (C) may be the nominal values and color tones of the manufacturer or seller.

[0034] The contents of Component (B) and Component (C) are not particularly limited as long as the deterioration of the transparency of the solid powder cosmetic due to Component (A) is improved. However, when the contents of Component (B) and (C) become excessive, the pearl brightness becomes prominent, and there is a tendency to result in a garish and unnatural finish. Therefore, the contents of Component (B) and Component (C) are preferably in an amount such that the pearl brightness is not overly prominent. For example, the content of Component (B) and Component (C) is preferably independently 0.1% by mass to 8% by mass, more preferably 0.3% by mass to 5% by mass, and even more preferably 0.5% by mass to 4% by mass with respect to the total amount of the solid powder cosmetic. Further, the total amount of the contents of Component (B) and Component (C) is preferably 0.2% by mass to 10% by mass, more preferably 0.5% by mass to 8% by mass, even more preferably 0.8% by mass to 6% by mass, and still even more preferably 1% by mass to 5% by mass with respect to the total amount of the solid powder cosmetic.

[0035] The ratio of the contents of Component (B) and Component (C) is not particularly limited, and the content of Component (B) may be greater than the content of Component (C), or the content of Component (C) may be greater than the content of Component (B). In view of the description of the examples described later, the ratio of the contents of Component (B) and Component (C) (content of Component (B): content of Component (C)) is preferably 6:0.5 to 0.5:6, more preferably 4:1 to 1:4, and even more preferably 2:1 to 1:2.

[0036] Component (A), component (B), and component (C) are closely related and can affect the texture and transparency of the solid powder cosmetic of one aspect of the present invention. For example, when using amorphous silica instead of component (A), even in the presence of component (B) and component (C), a transparent finish cannot be obtained. That is, the solid powder cosmetic of one aspect of the present invention is characterized by containing component (A), component (B), and component (C) in combination, and the relationship of the contents of these components is not particularly limited. However, in view of the examples described later, the ratio of the total content of component (B) and (C) to the content of component (A) ([total content of component (B) + component (C)] / [content of component (A)]) is preferably 0.1 to 30, preferably 0.2 to 20, and more preferably 0.3 to 18.

[0037] In the solid powder cosmetic of one aspect of the present invention, the amounts and ratios of two, three, four, five, or six selected from the group consisting of the content of component (A), the content of component (B), the content of component (C), the total content of component (B) and component (C), the content ratio of component (B) and component (C), and the ratio of the total content of component (B) and (C) to component (A) are each preferably within the above-mentioned ranges. However, the contents of component (A), component (B), and component (C) may vary depending on the contents of other components.

[0038] The solid powder cosmetic of one aspect of the present invention may contain other components in addition to components (A) to (C) as long as the problems of the present invention can be solved.

[0039] Other components are not particularly limited, and examples include components used in ordinary solid powder cosmetics. More specifically, they include bases, coloring pigments, touch improvers, preservatives, oils, surface treatment agents, moisturizers, cooling agents, chelating agents, surfactants, pH adjusters, antioxidants, ultraviolet absorbers, thickeners, whitening agents, vitamins, various other medicinal components, powders, fragrances, and the like. The content of other components can be appropriately set by those skilled in the art as long as it does not prevent the solution of the problems of the present invention. Some of the other components are listed below, but these are merely examples and are not limiting.

[0040] Examples of the base include mica, talc, kaolin, sericite, and surface-treated products thereof, and one of these can be used alone or in combination of two or more. The content of the base is preferably 30% by mass to 70% by mass.

[0041] The coloring pigment may be any of inorganic coloring pigments, organic coloring pigments, or combinations thereof. Examples of the coloring pigment include metal oxides such as titanium oxide, zinc oxide, iron oxide, yellow iron oxide, red iron oxide, black iron oxide, ultramarine blue, cobalt 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 No. 404; and natural organic pigments such as β-carotene, caramel, and paprika pigment. The coloring pigment can be used alone or in combination of two or more to exhibit a desired color tone. The content of the coloring pigment is preferably 5% by mass to 20% by mass.

[0042] Examples of the feel improver include powders such as silica, methyl methacrylate cross polymer, nylon-6, nylon-11, nylon-12, polymethylsilsesquioxane, boron nitride, and octenyl succinic anhydride corn starch Al; and metal soaps such as magnesium stearate, zinc stearate, zinc laurate, and zinc myristate. One of these can be used alone or in combination of two or more. The content of the feel improver is preferably 0% by mass to 30% by mass.

[0043] Examples of the preservative include paraoxybenzoic acid esters such as propyl paraben and methyl paraben, benzoic acid, salicylic acid, phenol, sorbic acid, parachlorometacresol, hexachlorophene, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, photosensitizer, phenoxyethanol, etc. One of these can be used alone, or two or more of them can be used in combination. The content of the preservative is preferably 0% by mass to 1% by mass.

[0044] Examples of the oil agent include oily emollient components, sunscreen components, rust prevention components, surface treatment components, etc. Specifically, isononyl isononanoate, isotridecyl isononanoate, distearyl malate, ethylhexyl palmitate, cetyl ethylhexanoate, triethylhexanoin, dipentaerythrityl hexahydroxystearate, pentaerythrityl tetraisostearate, di(phytosteryl / octyldodecyl) lauroyl glutamate, dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, dimethicone, cyclopentasiloxane, dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, diphenylsiloxyphenyltrimethicone, fluoropolyether, perfluoroalkyl ether silicone, squalane, mineral oil, hydrogenated poly(C6-12 olefin), ethylhexyl methoxysilicate, sorbitan oleate, sesquioleate sorbitan, polyglyceryl-2 triisostearate, olive fruit oil, jojoba seed oil, lavender oil, evening primrose oil, avocado oil, camellia seed oil, macadamia seed oil, etc. One of these can be used alone, or two or more of them can be used in combination. The content of the oil agent is preferably 5% by mass to 15% by mass.

[0045] Examples of the surface treatment agent include dimethicone, methicone, triethoxycaprylylsilane, mineral oil, isostearyl sebacate, (dimethicone / methicone) copolymer, etc., and one of these can be used alone or in combination of two or more. The content of the surface treatment agent is preferably 0% by mass to 5% by mass.

[0046] Examples of the antioxidant include vitamin E such as dibutylhydroxytoluene, butylhydroxyanisole, tocopherol and its derivatives, thiotaurine, Portulaca oleracea extract, catechin compounds, flavonoid compounds, polyphenol compounds, etc., and one of these can be used alone or in combination of two or more. The content of the antioxidant is preferably 0% by mass to 1% by mass.

[0047] The solid powder cosmetic of one embodiment of the present invention is characterized by including the component (A), the component (B), and the component (C) in combination, having good texture and good transparency. Due to such characteristics, the solid powder cosmetic of one embodiment of the present invention is easy to pick up with an applicator, has good elongation when applied to the skin, and furthermore, the skin after application has a bright and natural finish. The solid powder cosmetic of one embodiment of the present invention is not particularly limited with respect to other physical properties. For example, in order to maintain moldability, the hardness is preferably 20 g or more, and more preferably 25 g to 55 g. The hardness of the solid powder cosmetic is measured by the method described in the examples below.

[0048] A non-limiting specific embodiment of the solid powder cosmetic of one embodiment of the present invention contains 0.3% by mass to 5% by mass of the component (A), 0.5% by mass to 4% by mass of the component (B), and 0.5% by mass to 4% by mass of the component (C) with respect to the total amount of the solid powder cosmetic. The total content of the component (B) and the component (C) is 0.5% by mass to 8% by mass, the ratio of the content of the component (B) and the component (C) is 4:1 to 1:4, and the ratio of the total content of the component (B) and the component (C) to the component (A) is 0.3 to 18, and it is a solid powder cosmetic having good texture and good transparency.

[0049] Another non - limiting specific embodiment of the solid powder cosmetic of one aspect of the present invention is that, based on the total amount of the solid powder cosmetic, component (A) is contained in an amount of 0.3% by mass to 1% by mass, component (B) is contained in an amount of 1% by mass to 3% by mass, and component (C) is contained in an amount of 1% by mass to 3%, the total content of component (B) and component (C) is 1% by mass to 6% by mass, the ratio of the contents of component (B) and component (C) is 2:1 to 1:2, and the ratio of the total content of component (B) and (C) to component (A) is 5 to 10. It is a solid powder cosmetic with good texture and transparency.

[0050] The manufacturing method of the solid powder cosmetic of one aspect of the present invention is not particularly limited. For example, the methods described in the following examples can be mentioned. That is, the A - phase containing solid powder components such as component (A) and a base is uniformly mixed and dispersed using a mixer or the like, then the B - phase containing component (B) and component (C) is added to the A - phase and mixed, then the C - phase containing liquid components such as an oil agent is added and mixed, and then the obtained mixture is pulverized and compression - molded according to a conventional method, whereby the solid powder cosmetic of one aspect of the present invention can be obtained.

[0051] The usage mode and dosage form of the solid powder cosmetic of one aspect of the present invention are not particularly limited. For example, makeup cosmetics can be mentioned, and more specifically, makeup cosmetics such as foundation, eyeshadow, face powder, and blusher can be mentioned.

[0052] Hereinafter, the present invention will be described more specifically by way of examples. However, the present invention is not limited to these examples, and the present invention can take various aspects as long as the problems of the present invention can be solved.

Examples

[0053] [Example 1. Evaluation of Solid Powder Cosmetic Containing Monochromatic Pearl Pigment] (1 - 1) Preparation of Test Solid Powder Cosmetic According to the formulations shown in Table 1, each solid powder cosmetic was prepared by the following procedure. The numerical values in the table represent mass% (wt%).

[0054] The components of the A phase in the table were mixed and dispersed uniformly using a mixer (“LAB.MIXER LM-110T”; manufactured by Hanil Electric Co., Ltd.). The components of the B phase were added to the mixed and dispersed A phase and mixed using a mixer. The components of the C phase were added to the obtained mixture of the A and B phases and further mixed and dispersed using a mixer.

[0055] The obtained mixed powder was pulverized using a pulverizer (“Small Pulverizer Labo Mill LM-05 type”; manufactured by Dalton). The obtained pulverized material was weighed into a resin dish and compression molded at a pressure of 9.5 MPa using a press machine (“Mini Press Machine for Laboratory”; manufactured by Sanshin Seiki Co., Ltd.) to obtain the test solid powder cosmetic.

[0056] (1-2) Take-out evaluation The surface of the test solid powder cosmetic was rubbed 5 times with a sponge with the same degree of force, and the amount taken out was measured. If the measurement result was less than 0.04 g, it was regarded as “×” (failed), and if it was 0.04 g or more, it was regarded as “○” (passed).

[0057] (1-3) Sensory evaluation For two panelists who had received training on the sensory evaluation of cosmetics, after applying the test solid powder cosmetic to the skin (forearm) using a sponge, the skin impressions when comparing the unapplied area and the applied area were visually confirmed. Regarding “transparency” (giving a clear impression without dullness as if it is see-through), “bloom” (giving a healthy impression with an appropriate reddish tint), “gloss” (giving an impression that the surface is smooth and has an appropriate luster), “toning up” (brightening the skin color and giving a uniform impression), and “coverage” (hiding skin color unevenness such as spots and dullness) as evaluation items, if both panelists felt it, it was scored as “2 points”, if only one panelist felt it, it was scored as “1 point”, if only one panelist felt it slightly, it was scored as “0.5 points”, and if neither of them felt it, it was scored as “0 points”.

[0058] (1-4) Evaluation results The results of the take-out evaluation and the sensory evaluation are shown in Table 1.

[0059] The test solid powder cosmetics of Reference Examples 5 and 6 containing purple interference pearls and blue interference pearls showed a sense of transparency in the applied area compared to the non-applied area. However, among these, the test solid powder cosmetics of Reference Example 6 containing blue interference pearls did not show any sense of healthy complexion, and rather gave a somewhat unnatural (unhealthy) skin impression compared to the non-applied area. Also, the test solid powder cosmetics of Reference Example 5 containing purple interference pearls gave a sense of transparency to the applied area and a natural skin impression, but the degree of transparency was felt to be small (either not different from or lower than those conventionally known). Although the test solid powder cosmetics of Reference Examples 5 and 6 had less silica content than other test solid powder cosmetics, the presence or absence of effects due to the color tone did not change.

[0060] On the other hand, the test solid powder cosmetics of Reference Examples 1 to 4 containing silver pearls, orange interference pearls, gold interference pearls, and red interference pearls hardly showed any sense of transparency. However, in terms of items other than transparency, the test solid powder cosmetics of Reference Examples 3 and 4 containing gold interference pearls and red interference pearls respectively were excellent.

[0061] Also, the test solid powder cosmetics of Reference Example 1 containing silver pearls gave a skin impression of white floating in the applied area due to the silver-white color derived from the pearls, and because the glitter of the pearls was strongly felt, it tended to give an unnatural impression with poor skin affinity. Furthermore, the test solid powder cosmetics of Reference Example 3 containing gold interference pearls had good skin affinity but gave an impression of yellowing.

[0062] As described above, the test solid powder cosmetics containing any one of the pearl pigments alone did not give sufficient transparency.

[0063]

Table 1

[0064] Note that the commercial product names *1 to *18 in Tables 1 to 6 are as follows: *1 Sanshfair (registered trademark) H-122 (manufactured by AGC SI TECH Co., Ltd.) *2 Sansfair (Registered Trademark) H-32 (manufactured by AGC SI TECH Co., Ltd.) *3 Sansfair (Registered Trademark) H–52 (manufactured by AGC SI TECH Co., Ltd.) *4 Sansfair (Registered Trademark) H-201 (manufactured by AGC SI TECH Co., Ltd.) *5 Sunlovely (Registered Trademark) C (manufactured by AGC SI TECH Co., Ltd.) *6 Cosmetica Super White N-8000S (manufactured by CQV Co., Ltd.) *7 Cosmetica Super Violet N-5601S (manufactured by CQV Co., Ltd.) *8 Cosmetica Super White N-8000S-2S (manufactured by CQV Co., Ltd.) *9 Cosmetica Super Violet N-5601S-2S (manufactured by CQV Co., Ltd.) *10 Timiron Halo White (manufactured by Merck & Co., Inc.) *11 KTZ INTERFINE VIOLET-11S2 (manufactured by KOBO Products, Inc.) *12 OTS-2 DK PEARL SILVER2 (manufactured by Daito Kasei Kogyo Co., Ltd.) *13 DK PEARL-IF VIOLET (manufactured by Daito Kasei Kogyo Co., Ltd.) *14 Cosmetica Super Blue N-5801S (manufactured by CQV Co., Ltd.) *15 FLAMENCO Silk Orange 330 (manufactured by BASF SE) *16 Timiron Super Gold (manufactured by Merck & Co., Inc.) *17 Timiron Super Red (manufactured by Merck & Co., Inc.) *18 SILSEEM Misty Pearl Silver (talc-based: manufactured by Nippon Koken Kogyo Co., Ltd.)

[0065] [Example 2. Evaluation of Solid Powder Cosmetics with Excellent Coverage and Transparency] (2-1) Preparation of Test Solid Powder Cosmetics In the same manner as in Example 1, each solid powder cosmetic was prepared according to the formulations shown in Tables 2 to 4. The numerical values in the tables represent mass% (wt%).

[0066] (2-2) Hardness Measurement For the test solid powder cosmetic, measurement was carried out using a rubber hardness meter ("Asker Rubber Hardness Meter AL Type"; manufactured by Kobunshi Keiki Co., Ltd.), and the average value was calculated with 5 measurement points.

[0067] (2-3) Take-out Evaluation In the same manner as in (1-2) above, take-out evaluation was carried out.

[0068] (2-4) Transparency Evaluation For 5 panelists who had received training on the sensory evaluation of cosmetics, when the test solid powder cosmetic was applied to the skin (forearm) using a sponge, the skin impression was visually confirmed to evaluate "transparency" on a 5-point scale. Transparency was scored "5 points" when it was confirmed that dullness was removed, the skin looked brighter, the concealing effect was not too strong (exhibiting a good covering power), it adhered to the skin, and it did not look flat. When it was confirmed that the skin became yellow or red and dull, the skin looked dark, the concealing effect was too strong, it did not adhere to the skin, or it looked flat, it was scored from "1 point" to "4 points" according to the number and degree of these conditions. From the scoring results, the average score and standard deviation among the panelists were obtained. Regarding the evaluation of transparency, those with an average score of 3.0 or less among the panelists were evaluated as "×" (failed), and those with a score greater than 3.0 were evaluated as "○" (passed).

[0069] (2-5) Comprehensive Evaluation From the evaluation results of take-out and transparency, those with a take-out evaluation of 0.04 g or more and a transparency evaluation greater than 3.0 were evaluated as "○" (passed), and those that did not meet at least one of the criteria were evaluated as "×" (failed).

[0070] (2-6) Evaluation Results The results of hardness measurement, take-out evaluation, transparency evaluation, and comprehensive evaluation are shown in Tables 2 to 4.

[0071] As shown in Table 2, the test solid powder cosmetics containing spherical silica, silver pearl, and purple interference pearl were excellent in both texture and transparency even when the type and content of the oil agent, which is the C phase, were changed (Examples 1 to 3). On the other hand, the test solid powder cosmetics that did not contain spherical silica were inferior in texture (Comparative Example 1). Also, regardless of the presence or absence of spherical silica, the test solid powder cosmetics that did not contain silver pearl and purple interference pearl were generally inferior in transparency (Comparative Examples 1 to 3).

[0072] As shown in Table 3, even when the conditions such as the content ratio, total content, surface treatment, and particle size of silver pearl and purple interference pearl were changed, the resulting test solid powder cosmetics were generally excellent in texture and transparency (Examples 4 to 9). On the other hand, the test solid powder cosmetics that contained purple interference pearl but did not contain silver pearl were all inferior in transparency (Comparative Example 4, Reference Examples 5 and 7).

[0073] In addition, similar to Patent Document 2, the evaluation result that the transparency of the test solid powder cosmetics of Comparative Example 4 containing purple interference pearl and orange interference pearl is inferior is presumed as follows. That is, the expressed color by mixing pearl pigments is based on additive color mixing, and when different interference color pearl pigments are mixed, it will eventually become white. And in the reflected light spectrum, when purple with a large reflectance in the short wavelength region and long wavelength region and orange with a large reflectance from the middle wavelength region to the long wavelength region are combined, as a result, the magnitude of the reflectance at each wavelength compensates for each other and becomes like a broad spectrum, so it is considered that the influence on transparency becomes small.

[0074] As shown in Table 4, even when the content and particle size of spherical silica changed, the obtained solid powder cosmetic samples had excellent texture and transparency (Examples 10 to 16). On the other hand, even for those containing silver pearl and purple interference pearl, the solid powder cosmetic samples without spherical silica had inferior texture (Comparative Example 5). Also, when spherical silica was replaced with bowl-shaped PMMA or amorphous silica, the solid powder cosmetic samples had inferior transparency (Comparative Examples 6 to 7). Furthermore, the solid powder cosmetic samples containing spherical silica with a particle size of 20 μm or more tended to have impaired transparency, and the solid powder cosmetic samples with a spherical silica content of 8.00% by mass or more could not be molded (Comparative Examples 8 to 9). However, for silver pearl and purple interference pearl, the transparency evaluation tended to improve in proportion to the increase in the total content (Examples 1, 8, and 9). Thus, as in Comparative Example 9, even when the content of spherical silica is large, it is possible to improve the transparency by increasing the total content of silver pearl and purple interference pearl.

[0075]

Table 2

[0076]

Table 3

[0077]

Table 4

[0078] From the above results, it was found that the solid powder cosmetic containing spherical silica, silver pearl and purple interference pearl is a solid powder cosmetic with excellent texture and transparency. In the results of Reference Examples 1 to 6 in Table 1, when the purple interference pearl was used, a tendency to obtain transparency was observed, but such a tendency was not obtained when the silver pearl was used. Nevertheless, by combining the purple interference pearl and the silver pearl, a transparency significantly superior to that obtained when the purple interference pearl was used alone could be obtained. Considering that transparency was not obtained when the silver pearl was used, the effect of such a combination of the purple interference pearl and the silver pearl was found to be a synergistic effect rather than an additive effect.

[0079] In addition, it was found that the solid powder cosmetic containing spherical silica, silver pearl and purple interference pearl has good elongation and can achieve a covering power and finish durability that make pores and fine wrinkles less noticeable.

[0080] [Example 3. Formulation Example] Hereinafter, as one aspect of the present invention, formulation examples of solid powder cosmetics with a high probability of having an overall evaluation of "○" are given, but the technical scope of the present invention is not limited to these formulation examples.

[0081] (Formulation Example 1) Powder Foundation In the same manner as in Example 1, by mixing, pulverizing and molding the components according to the formulation shown in Table 5, a powder foundation was obtained as a solid powder cosmetic.

[0082] [Table 5]

[0083] (Formulation Example 2) Cheek (Blush) In the same manner as in Example 1, by mixing, pulverizing and molding the components according to the formulation shown in Table 6, a cheek was obtained as a solid powder cosmetic.

[0084] [Table 6]

Industrial Applicability

[0085] The solid powder cosmetic of one embodiment of the present invention has good texture and transparency, and thus can be suitably used as makeup cosmetics such as foundation, eyeshadow, face powder, and blusher. By using the solid powder cosmetic of one embodiment of the present invention, the user can comfortably, beautifully and attractively dress up on a daily basis, obtain a positive psychological effect from makeup, and further expect to protect the skin from external stimuli.

Claims

1. (A) spherical silica, (B) white pearl pigment, (C) a pearl pigment with an interference color of purple and a solid powder cosmetic, wherein the total content of the component (B) and the component (C) is 0.2% by mass to 10% by mass.

2. The solid powder cosmetic according to Claim 1, wherein the component (A) has a particle size of 1 μm to 18 μm.

3. The solid powder cosmetic according to any one of Claims 1 to 2, wherein the component (B) has a particle size of 0.5 μm to 100 μm and / or the component (C) has a particle size of 0.5 μm to 100 μm.

4. The solid powder cosmetic according to any one of Claims 1 to 3, wherein the content of the component (A) is 0.1% by mass to 7% by mass.

5. The solid powder cosmetic according to any one of Claims 1 to 4, wherein the ratio of the content of the component (B) to the content of the component (C) is 6:0.5 to 0.5:6.

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