Powdered solid cosmetics

Abstract

Provided is a mass-produced powder solid cosmetic using a wet molding method and having excellent impact resistance. 【Solution means】The powder solid cosmetic of the present invention is a powder solid cosmetic containing (A) powder and (B) oil component, where (B) the oil component contains (b1) non-volatile dimethicone, and (b2) a dispersant and (b2) the dispersant is incompatible with (b1) non-volatile dimethicone, the content of (B) the oil component is 20 to 50% by mass based on the total amount of the cosmetic, the content of (b1) non-volatile dimethicone is 50% by mass or more based on the total amount of (B) the oil component, the content of (b2) the dispersant is 0.1 to 45% by mass based on the total amount of the cosmetic, which is characterized by this.

Description

Technical Field

[0001] The present invention relates to powder solid cosmetics. More specifically, it relates to powder solid cosmetics suitable for mass production using a wet molding method (wet forming method) and having excellent impact resistance.

Background Art

[0002] Powder solid cosmetics have a structure in which powder components are mainly solidified with an oily binder and are widely used as makeup cosmetics such as foundation and eyeshadow. In recent years, in addition to the basic performance of cosmetics such as makeup finish and makeup retention, improvement in practical performance as products such as impact resistance and mass productivity has also been demanded.

[0003] For example, Patent Document 1 describes a solid cosmetic containing (A) an oil agent that is liquid at normal temperature, (B) powder, (C) a partially crosslinked organopolysiloxane polymer, and (D) a dextrin fatty acid ester having a specific structure. It is described that this solid cosmetic exhibits high elasticity, uniformity of the makeup film, impact resistance, etc. by adjusting the mass ratio of (A) and (B) within a predetermined range.

[0004] Generally, the following two methods are used for manufacturing powder solid cosmetics. That is, a dry molding method in which powder is filled in a middle dish and pressed with a mold, and a wet molding method in which a solvent is added to the raw material to make it slurry-like, this is filled in a middle dish, pressed and molded, and then the solvent is dried and removed. The solid cosmetic described in Patent Document 1 contains a volatile oil in order to dissolve the dextrin fatty acid ester as component (D) to improve the uniformity of the makeup film and further impart a gloss. Therefore, it is considered suitable for production by the dry molding method (paragraphs 0015 and 0059).

[0005] On the other hand, the wet molding method has the advantage of allowing for stable molding regardless of the shape of the inner dish, as the slurry-like raw material is poured into the inner dish, and it can also produce cosmetics with a soft feel. However, because a heating and drying step is required to remove the solvent used in forming the slurry, the process is more complex than the dry molding method and may not be suitable for mass production.

[0006] In conventional wet molding methods, water, lower alcohols, or volatile solvents such as volatile hydrocarbons were widely used as solvents for slurry formation, and these were removed by heating and drying after suction pressing. On the other hand, in the production of solid powder cosmetics containing a large amount of organic laminated powder with excellent luster, a wet molding method has been proposed that uses a non-volatile oil agent, particularly a non-volatile silicone oil with excellent recovery efficiency, as a solvent for slurry formation (Patent Document 2). In this method, the non-volatile oil agent is absorbed by an absorbent material (paper or nonwoven fabric) pressed against the opening of the container, and removed while remaining in liquid form. However, it has been pointed out that residual non-volatile silicone oil after molding may degrade the quality of cosmetics, and Patent Document 3 proposes using a specific non-volatile hydrocarbon oil as the oil component of cosmetics to solve this problem.

[0007] The cosmetics described in Patent Documents 2 and 3 contain a large amount of luminous powders and organic laminated powders (hereinafter also referred to as "pearl agents"). These pearl agents are powders having a thin film layer on the surface of a base powder, such as plate-like particles with metal compounds laminated on them, or laminates of polymer resin layers, and have a larger particle size compared to other powders commonly used in cosmetics (inorganic pigments, organic pigments, extender pigments, ultraviolet scattering agents, resin powders, etc.). Therefore, appropriate gaps are formed between the powder particles in the slurry, the solvent flows easily, and solvent removal is relatively easy. On the other hand, in cosmetics that do not contain pearlescent agents and are mainly composed of other powders, the fineness of the particles reduces the gaps in the slurry, making solvent removal difficult. Therefore, when manufacturing cosmetics that do not contain pearlescent agents in order to obtain a matte finish, solvent removal is likely to be insufficient, which may result in a decrease in mass productivity and impact resistance. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2016-190838 [Patent Document 2] Japanese Patent Publication No. 2007-291074 [Patent Document 3] International Publication No. 2022 / 220027 [Disclosure of the Invention] [Problems that the invention aims to solve]

[0009] The present invention aims to provide a powdered solid cosmetic that allows for easy removal of the solvent from the slurry, even when it contains very little pearlescent material. This enables mass production even when manufactured using a wet molding method, and further realizes a powdered solid cosmetic that exhibits superior impact resistance. [Means for solving the problem]

[0010] The inventors of the present invention have conducted extensive research to solve the aforementioned problems and have found that by incorporating non-volatile dimethicone and a dispersant incompatible with non-volatile dimethicone into the oil, and further adjusting the content of the oil, non-volatile dimethicone, and dispersant within a specific range, both mass productivity and impact resistance can be significantly improved, thus completing the present invention.

[0011] In other words, the present invention is A powdered solid cosmetic containing (A) powder and (B) oil, (B) Oil content (b1) Non-volatile dimethicone, and (b2) Dispersant Includes, (b2) The dispersant is incompatible with (b1) non-volatile dimethicone, (B) The oil content is 20 to 50% by mass relative to the total amount of the cosmetic product. (b1) The non-volatile dimethicone content is 50% by mass or more relative to the total amount of (B) oil, (b2) The dispersant content is 0.1 to 45% by mass relative to the total amount of the cosmetic. We provide powdered and solid cosmetic products. [Effects of the Invention]

[0012] The powdered solid cosmetic composition of the present invention allows for easy removal of the solvent during manufacturing by a wet molding method, thereby improving the efficiency of the manufacturing process and significantly enhancing mass production capabilities. This effect is due to the inclusion of an incompatible dispersant in the non-volatile dimethicone used as a solvent, which causes the powders to coagulate appropriately in a slurry state, creating sufficient gaps between the powders. It is believed that the solvent flows and is removed efficiently through these gaps, ensuring adequate solvent removal. Furthermore, the ease of solvent removal enhances the adhesion and structural stability of the cosmetic product after molding, contributing to improved impact resistance. In addition, the powdered solid cosmetic composition of the present invention exhibits excellent mass-producibility even without containing pearlescent agents, allowing for greater flexibility in color design and enabling the creation of matte finishes that were difficult to achieve with conventional wet molding methods.

[0013] The powdered solid cosmetic composition of the present invention (hereinafter also simply referred to as "cosmetic composition") comprises (A) powder and (B) oil, wherein (B) oil comprises (b1) non-volatile dimethicone and (b2) a dispersant.

[0014] (A) Powder The powder (A) contained in the cosmetic composition of the present invention is not particularly limited as long as it is commonly used in powdered solid cosmetic compositions. Examples include extender pigments, inorganic pigments (white pigments and colored pigments), organic pigments, pearlescent agents, ultraviolet scattering agents, and other inorganic and organic powders. Furthermore, the powder (A) may be surface-treated or untreated.

[0015] (A) Specific examples of powders include, but are not limited to, the following: Silica, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, synthetic fluorinated phlogopite, rose mica, biotite, calcined talc, calcined sericite, calcined muscovite, calcined phlogopite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluoroapatite, hydroxyapatite, ceramic powder, metal soaps (e.g., zinc myristate, calcium palmitate, aluminum stearate, etc.), photochromic titanium dioxide (titanium dioxide sintered from iron oxide), reduced zinc oxide; organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamide) Inorganic resin powder, polytetrafluoroethylene powder, etc.; inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); inorganic red pigments (e.g., red iron oxide (red iron oxide), iron titanate, etc.); inorganic brown pigments (e.g., γ-iron oxide, etc.); inorganic yellow pigments (e.g., yellow iron oxide, ochre, etc.); inorganic black pigments (e.g., black iron oxide, lower titanium oxide, etc.); inorganic purple pigments (e.g., mango violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, Prussian blue, etc.); pearlescent agents (e.g., bismuth oxychloride, fish scale foil, titanium mica, iron oxide-coated titanium mica, lower titanium oxide-coated titanium mica, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments (e.g., zirconium, barium, or aluminum lake, etc.); natural pigments (e.g., chlorophyll, β-carotene, etc.); ultraviolet scattering agents (fine particle titanium dioxide, fine particle zinc oxide, etc.). Among these, the inclusion of organic pigments improves color development.Specific examples of the organic pigment include Pigment Red 201, Pigment Red 202, Pigment Red 204, Pigment Red 205, Pigment Red 220, Pigment Red 226, Pigment Red 228, Pigment Red 405, Pigment Orange 203, Pigment Orange 204, Pigment Yellow 205, Pigment Yellow 401, and Pigment Blue 404, Pigment Red 3, Pigment Red 104, Pigment Red 106, Pigment Red 227, Pigment Red 230, Pigment Red 401, Pigment Red 505, Pigment Orange 205, Pigment Yellow 4, Pigment Yellow 5, Pigment Yellow 202, Pigment Yellow 203, Pigment Green 3, and Pigment Blue 1, etc.

[0016] Since the cosmetic of the present invention has excellent solvent removability, it is not necessary to contain a pearlescent agent during production. Therefore, for the purpose of obtaining a matte finish without a gloss, it can be in a form that does not contain any pearlescent agent or contains only a very small amount. Generally, when realizing a matte color tone, the content of the pearlescent agent is preferably 10% by mass or less, more preferably 5% by mass or less, based on the total amount of the cosmetic.

[0017] (B) Oil component The (B) oil component contained in the cosmetic of the present invention essentially contains (b1) non-volatile dimethicone and (b2) a dispersant. The content of the (B) oil component in the cosmetic of the present invention is 20 to 50% by mass, preferably 25 to 45% by mass, more preferably 30 to 40% by mass, based on the total amount of the cosmetic. If the content is less than 20% by mass, the cosmetic may harden and it may be difficult to mold, and there is a risk of reduced mass productivity. On the other hand, if it exceeds 50% by mass, the cosmetic may become overly soft and tend to have reduced impact resistance.

[0018] (b1) Non-volatile dimethicone The non-volatile dimethicone (b1) used in the cosmetic composition of the present invention is a dimethicone that is liquid at room temperature (25°C) and is non-volatile. In this specification, "non-volatile" means that the volatile content is 5% or less when left standing at 105°C under atmospheric pressure for 3 hours. Here, "volatile content" refers to the weight change rate (rate of decrease due to volatilization) when a filter paper is placed on a glass petri dish, approximately 0.2g of the sample is dropped onto it, and measured by gravimetric method. In contrast, "volatile" means that the volatile content measured under the same conditions exceeds 5%.

[0019] The non-volatile dimethicone (b1) used in the present invention preferably has a viscosity (kinematic viscosity) of 10 cs or less, more preferably 8 cs or less, and even more preferably about 6 cs at room temperature. In terms of form, linear dimethicone is preferred. The lower limit of viscosity is usually around 6 cs.

[0020] The content of (b1) non-volatile dimethicone in the cosmetic composition of the present invention is 50% by mass or more, preferably 60% by mass or more, and more preferably 80% by mass or more, relative to the total amount of (B) oil. Since a higher content of (b1) non-volatile dimethicone relative to the total amount of (B) oil tends to be preferable, there is no particular upper limit, but for example it can be 99.8% by mass or less relative to the total amount of (B) oil. Therefore, possible content ranges include 50-99.8% by mass, 60-99.8% by mass, 80-99.8% by mass, etc. On the other hand, if the content of (b1) non-volatile dimethicone is less than 10% by mass relative to the total amount of (B) oil, sufficient mass productivity and impact resistance may not be obtained.

[0021] (b2) Dispersant The (b2) dispersant used in the cosmetic composition of the present invention has the function of uniformly dispersing the (A) powder in the (B) oil and moderately causing the powders to aggregate in a slurry state. In order to exhibit such functions, the (b2) dispersant must be incompatible with the (b1) non-volatile dimethicone. In this specification, "mismatched" means that when (b1) non-volatile dimethicone and the (b2) dispersant in question are mixed, heated to 80°C, and then allowed to cool to room temperature, a uniform transparent layer is not formed.

[0022] Such (b2) dispersants are preferably non-silicone dispersants, and for example, one or more selected from polyhydroxystearic acid, (polyglyceryl-2 isostearate / dimer dilinoleic acid) copolymer, polyglycerin fatty acid esters, and sorbitan fatty acid esters can be used.

[0023] Polyhydroxystearic acid is a polymer of hydroxystearic acid having one hydroxyl group. The degree of polymerization of hydroxystearic acid is preferably 3 to 12, and more preferably 4 to 8.

[0024] Examples of polyglycerin fatty acid esters include polyglyceryl-2 stearate, polyglyceryl-2 distearate, polyglyceryl-2 oleate, polyglyceryl-2 dioleate, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, polyglyceryl-4 stearate, polyglyceryl-4 oleate, polyglyceryl-4 tristearate, polyglyceryl-4 pentaoleate, polyglyceryl-6 laurate, polyglyceryl-6 myristate, polyglyceryl-6 stearate, polyglyceryl-6 oleate, polyglyceryl-6 tristearate, polyglyceryl-6 tetrabehenate, polyglyceryl-6 pentastearate, polyglyceryl-6 pentaoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-10 laurate, polyglyceryl-6 myristate Polyglyceryl-10, Polyglyceryl-10 stearate, Polyglyceryl-10 isostearate, Polyglyceryl-10 oleate, Polyglyceryl-10 linoleate, Polyglyceryl-10 distearate, Polyglyceryl-10 diisostearate, Polyglyceryl-10 tristearate, Polyglyceryl-10 trioleate, Polyglyceryl-10 pentastearate, Polyglyceryl-10 pentahydroxystearate Examples include polyglyceryl-10 pentaiisostearate, polyglyceryl-10 pentaoleate, polyglyceryl-10 heptastearate, polyglyceryl-10 heptastearate, polyglyceryl-10 decastearate, polyglyceryl-10 decaisostearate, polyglyceryl-10 decaoleate, polyglyceryl-10 decamacadamia nut fatty acid, and polyglyceryl-10 polyricinoleate.

[0025] Examples of sorbitan fatty acid esters include sorbitan sesquiisostearate, sorbitan isostearate, sorbitan sesquioleate, and sorbitan trioleate. In particular, it is preferable to use sorbitan sesquiisostearate, sorbitan isostearate, and sorbitan sesquioleate, which are liquid at room temperature.

[0026] (Polyglyceryl-2 isostearate / dimer dilinoleic acid) copolymer is a copolymer of polyglyceryl-2 isostearate, which is formed by the condensation of isostearic acid and two molecules of glycerin, and dilinoleic acid, which is formed by the dimerization of linoleic acid.

[0027] (b2) The dispersant may be contained alone or in combination of two or more types. In particular, it is preferable to use one or more selected from polyhydroxystearic acid, (polyglyceryl-2 isostearate / dimer dilinoleic acid) copolymer, polyglyceryl polyricinoleate, and sorbitan sesquiisostearate, and especially preferable to use one or more selected from polyhydroxystearic acid and (polyglyceryl-2 isostearate / dimer dilinoleic acid) copolymer.

[0028] The content of (b2) dispersant in the cosmetic composition of the present invention is 0.1 to 45% by mass, preferably 0.5 to 4% by mass, and more preferably 1 to 3% by mass, based on the total amount of the cosmetic composition. When the content of (b2) dispersant is less than 0.1% by mass or more than 45% by mass, the mass productivity and impact resistance tend to be inferior.

[0029] The cosmetic composition of the present invention may contain oils other than (b1) non-volatile dimethicone and (b2) dispersant. Such oils are not particularly limited as long as they can be used in cosmetics in general, and may include non-volatile oils, volatile oils, oils that are solid or semi-solid at room temperature (25°C), and substances that have the effect of thickening liquid oils ("oil thickeners" or "oil gelling agents").

[0030] Examples of non-volatile, non-silicone oils include cetyl octanoate, cetyl ethylhexanoate, isodecyl pivalate, isodecyl neopentanoate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, isopropyl myristate, 2-hexyldecyl myristate, myristyl myristate, octyldodecyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, and 2-heptylundecyl palmitate. Butyl stearate, isocetyl stearate, isocetyl isostearate, decyl oleate, dodecyl oleate, oleyl oleate, myristyl lactate, cetyl lactate, diisostearyl malate, cholesteryl 12-hydroxystearate, methyl ricinoleate, diethylhexyl succinate, diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, diisopropyl sebacate, diethylhexyl sebacate, ethylene di-2-ethylhexanoate Glycol, neopentyl glycol dicaprate, neopentyl glycol dioctanoate, acetoglyceride, di(2-heptylundecanoate)glyceryl, triethylhexanoin, glyceryl tri-2-ethylhexanoate, glyceryl trimiristate, glyceryl triisopalmitate, glyceride tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane triisostearate, pentaerythrityl tetraoctanoate, tetraethylhexanoin Examples of liquid fats and oils include, but are not limited to, ester oils such as pentaerythrityl phosphate; hydrocarbon oils such as liquid paraffin, squalane, pristane, and polybutene; and liquid fats such as avocado oil, evening primrose oil, camellia oil, macadamia nut oil, sunflower oil, almond oil, corn oil, olive oil, rapeseed oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, hen oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese tuni oil, jojoba oil, and germ oil.

[0031] Examples of non-volatile, silicone-based oils include dimethylpolysiloxane (dimethicone; however, with a viscosity exceeding 10 cs), chain-like polysiloxanes such as methylphenylpolysiloxane and diphenylpolysiloxane, various modified polysiloxanes such as amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane. In the cosmetic composition of the present invention, if a non-volatile silicone oil other than (b1) non-volatile dimethicone is included, it is preferable that the amount of the silicone oil is less than that of component (b1). Specifically, it is desirable that the amount be 5% by mass or less, more preferably 3% by mass or less, and even more preferably 1% by mass or less, based on the total amount of the cosmetic composition. Furthermore, the present invention also includes embodiments in which the cosmetic composition does not contain any non-volatile silicone oils other than component (b1).

[0032] Examples of volatile oils include low-boiling-point hydrocarbon oils (e.g., boiling point of 200°C or less) such as isododecane, isohexadecane, and light liquid isoparaffin, and low-boiling-point linear or cyclic silicone oils such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane. However, formulations containing volatile oils impose handling restrictions, such as the need to store the molded cosmetic in an airtight container. Therefore, the content of volatile oils in the molded cosmetic is preferably less than 5% by mass of the total amount of the cosmetic, more preferably 3% by mass or less, and even more preferably 1% by mass or less. Furthermore, the present invention also includes embodiments of cosmetic compositions that do not contain any volatile oils.

[0033] Examples of solid or semi-solid oils at room temperature include solid fats and fats such as cocoa butter, coconut oil, hydrogenated coconut oil, palm oil, palm kernel oil, Japan wax kernel oil, Japan wax, and hydrogenated castor oil; waxes such as beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, montan wax, rice bran wax, sugarcane wax, jojoba wax, and POE cholesterol ether; hydrocarbon waxes such as polyethylene wax, paraffin wax, ceresin, petrolatum, and microcrystalline wax; fatty acid glyceryl ethers such as batyl alcohol; and fatty acid glycerides. However, since the inclusion of solid oils necessitates a heating step to dissolve or melt them, it is preferable to minimize the amount of solid oils contained in the cosmetic composition of the present invention. For example, the solid oil content is preferably less than 2% by mass of the total amount of the cosmetic composition, more preferably less than 1% by mass, and even more preferably less than 0.5% by mass. Furthermore, the present invention also includes embodiments of cosmetic compositions that do not contain any solid oils.

[0034] The oil thickener or oil gelling agent may include, for example, dextrin fatty acid esters. However, the inclusion of dextrin fatty acid esters can impair solvent release, making molding difficult during mass production, and can also result in a tendency for the molded cosmetic to become softer. Therefore, the cosmetic of the present invention preferably contains less than 1% by mass of dextrin fatty acid ester, and more preferably less than 0.5% by mass. Furthermore, the present invention also includes embodiments of the cosmetic composition that do not contain any dextrin fatty acid esters.

[0035] In addition to the components described above, the cosmetic composition of the present invention may contain optional components that can be included in powder or solid cosmetic compositions, to the extent that they do not impair the effects of the present invention. Examples of optional components include, but are not limited to, UV absorbers, humectants, antioxidants, preservatives, various drugs, and fragrances.

[0036] The cosmetic composition of the present invention can be manufactured by a wet molding method. In particular, it is preferable to use the same non-volatile dimethicone used in component (b1) as the solvent when forming the slurry, fill the slurry into a container, and then compress and mold it while removing the non-volatile dimethicone used as the solvent. The above-mentioned (b1) non-volatile dimethicone content refers to the amount remaining in the final cosmetic product and does not include the amount added as a solvent and subsequently removed.

[0037] As a specific example of the manufacturing method, first, a raw material composition is prepared by mixing (B) oil, which contains (b1) non-volatile dimethicone and (b2) a dispersant, with (A) powder. Next, a solvent is added to this raw material composition and mixed to form a slurry. It is preferable to use the same non-volatile dimethicone as used in component (b1) as the solvent, but volatile solvents such as water, lower alcohol, volatile silicone oil, or volatile hydrocarbon oil may be added as long as they do not affect the properties of the cosmetic after molding. Subsequently, the obtained slurry is filled into a container and compressed while removing the solvent. The method for carrying out the compression molding process is not particularly limited, and known methods can be used. For example, the cosmetic composition of the present invention can be obtained by filling the slurry into a container such as a metal or resin tray by injection filling, and then compressing and molding while removing the solvent in the filled slurry by suction or absorption.

[0038] The cosmetic composition according to the present invention can be provided as a powder-solid cosmetic composition with excellent impact resistance, in the form of, for example, foundation, eyeshadow, blush, body powder, perfume powder, baby powder, pressed powder, deodorant powder, etc. [Examples]

[0039] The present invention will be described in more detail below with specific examples, but the present invention is not limited to the following examples. Furthermore, unless otherwise specified, the content in the following examples is expressed as mass % relative to the total amount of cosmetic composition.

[0040] Powdered solid cosmetic formulations (eyeshadows) of the formulations of Examples 1 to 14 and Comparative Examples 1 to 5, as described in Table 1 below, were prepared by a wet molding method using non-volatile dimethicone (KF-96A-6T (Shin-Etsu Chemical Co., Ltd.)) as the solvent.

[0041] For each example of cosmetic composition, the mass-producibility and impact resistance were evaluated. The evaluation method and criteria are as follows. The evaluation results for each example of cosmetic composition are also shown in Table 1.

[0042] (1) Mass production During the wet molding process, when compressing and molding while suctioning a solvent, the ease of solvent separation (solvent evaporation) varies depending on the compatibility between the raw material composition and the solvent. Too much solvent evaporation leads to defects such as cracks and fractures, making it unsuitable for mass production, while too little solvent evaporation makes molding difficult. The "solvent evaporation" of each example cosmetic product when manufactured by the wet molding method was evaluated according to the following criteria. <Evaluation Criteria> A: It exhibits moderate solvent evaporation, resulting in excellent moldability and mass productivity. B: Solvent evaporation is slightly high or low, but molding is possible and there are no problems with use. C: Excessive or insufficient solvent evaporation results in defects such as cracks or splits, or makes molding difficult and unsuitable for mass production.

[0043] (2) Impact resistance After vibrating each sample of cosmetic, the appearance of the cosmetic was visually observed and evaluated according to the following criteria. <Evaluation Criteria> A: There is almost no change in the appearance of the cosmetics. B: There are slight changes in the appearance of the cosmetics, but there are no problems with their use. C: Some liquefaction was observed in the appearance of the cosmetic product, making it unsuitable for use.

[0044] [Table 1A]

[0045] [Table 1B]

[0046] [Table 1C] *1: "Prestige® Soft Bronze" (manufactured by Sudarshan) *2: "NIKKOL Decaglyn 2-ISV" (manufactured by Nikko Chemicals Co., Ltd.) *3: "SY Glister CRS-75" (manufactured by Sakamoto Pharmaceutical Co., Ltd.)

[0047] As shown in Table 1, the cosmetics of Examples 1 to 8, which contained (b1) non-volatile dimethicone at a concentration of 50% by mass or more relative to the total amount of (B) oil, and (b2) a dispersant in a concentration of 0.1 to 45% by mass relative to the total amount of cosmetic, all exhibited excellent mass productivity and sufficient impact resistance. Furthermore, even the cosmetic of Example 9, which contained no pearlescent agent at all, showed excellent results in both mass productivity and impact resistance, provided these conditions were met. Furthermore, (b2) when polyglyceryl-2 triisostearate (Example 10), sorbitan sesquiisostearate (Example 11), (polyglyceryl-2 isostearate / dimer dilinoleate) copolymer (Example 12), polyglyceryl-10 diisostearate (Example 13), and polyglyceryl-6 polyricinoleate (Example 14) were used as dispersants, excellent effects in terms of mass production and impact resistance were also observed. On the other hand, the cosmetic composition of Comparative Example 1, which did not contain (b2) dispersant, was inferior in both mass productivity and impact resistance. Furthermore, Comparative Example 2, in which the (B) oil content was less than 20% by mass of the total cosmetic composition, had low mass productivity, and Comparative Example 3, in which the oil content exceeded 50% by mass, did not achieve sufficient impact resistance. In addition, Comparative Example 4, in which the (b1) non-volatile dimethicone content was less than 50% by mass of the total oil content, and Comparative Example 5, which contained PEG-10 dimethicone, a dispersant highly compatible with (b1) non-volatile dimethicone, both exhibited insufficient mass productivity and impact resistance.

Claims

1. A powdered solid cosmetic composition containing (A) powder and (B) oil, (B) Oil content (b1) Non-volatile dimethicone, and (b2) Dispersant Includes, (b2) The dispersant is incompatible with (b1) non-volatile dimethicone, (B) The oil content is 20 to 50% by mass of the total amount of the cosmetic product. (b1) The content of non-volatile dimethicone is 50% by mass or more relative to the total amount of (B) oil, (b2) The dispersant content is 0.1 to 45% by mass relative to the total amount of the cosmetic. Powdered solid cosmetic.

2. (b) The powdered solid cosmetic composition according to claim 1, wherein the dispersant is one or more selected from the group consisting of polyhydroxystearic acid, (polyglyceryl-2 isostearate / dimer dilinoleic acid) copolymer, polyglycerin fatty acid ester, and sorbitan fatty acid ester.

3. (b) The powdered solid cosmetic composition according to claim 1, wherein the dispersant is one or more selected from the group consisting of polyhydroxystearic acid, (polyglyceryl-2 isostearate / dimer dilinoleate) copolymer, polyglyceryl polyricinoleate, and sorbitan sesquiisostearate.

4. (b1) The powdered solid cosmetic composition according to claim 1, wherein the non-volatile dimethicone is dimethicone with a viscosity of 10 cs or less at 25°C.

5. The powdered solid cosmetic composition according to claim 1, which does not contain a pearlescent agent, or the pearlescent agent content is 10% by mass or less of the total amount of the cosmetic composition.

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