Transparent composition and transparent cosmetic

Abstract

To provide a transparent composition that has an ultraviolet protection effect while maintaining high transparency, and that improves the ultraviolet protection effect by contacting with moisture such as water or sweat compared to that immediately after application. [Solution] (a) an ultraviolet absorber; (b) Oil with a refractive index of 1.5 to 1.7; (c) an oil component having a refractive index of 1.3 to less than 1.5; (d) a powder having a refractive index of 1.45 to 1.55; (e) an oil thickener; The refractive index of the mixed oil of (b) an oil having a refractive index of 1.5 to 1.7 and (C) an oil having a refractive index of 1.3 to less than 1.5 is 1.44 to 1.56, and (e) the oil thickener is a dextrin fatty acid ester, a sucrose fatty acid ester, a glyceryl fatty acid ester, an amino acid gelling agent (excluding lysine derivative-modified silicone), a fatty acid or a salt thereof, or an organically modified clay mineral.

Description

Technical Field

[0001] The present invention relates to a transparent composition having transparency and a high ultraviolet ray shielding effect, and a transparent cosmetic containing the same as a base.

Background Art

[0002] Oily transparent cosmetics mainly have advantages such as beautiful appearance and a transparent finish when applied, and thus various transparent bases have been studied.

[0003] For example, Patent Document 1 discloses a cosmetic using a transparent base having a refractive index of 1.45 to 1.54 and composed of 12-hydroxystearic acid and an oil component. Patent Document 2 discloses a transparent solid cosmetic composed of 12-hydroxystearic acid, heavy liquid paraffin, and a liquid oily component. Patent Document 3 discloses a transparent solid cosmetic containing 12-hydroxystearic acid, a transparent liquid oily component having a hydroxyl value of 120 or less, and methylphenylpolysiloxane.

[0004] In addition, as a transparent cosmetic containing dextrin fatty acid ester, Patent Document 4 discloses a transparent solid cosmetic containing dextrin fatty acid ester, heavy liquid paraffin, and a liquid oily component from the viewpoint of improving gloss during application. Patent Document 5 discloses a transparent solid composition containing dextrin fatty acid ester, a volatile oil component, an oil component having a refractive index of 1.4 to 1.6, and a spherical powder having a refractive index of 1.3 to 1.6 and an average particle diameter of 3 to 30 μm from the viewpoint of exerting a skin unevenness correcting effect and making pores less noticeable.

[0005] Although the above-mentioned transparent cosmetics containing 12-hydroxystearic acid or dextrin fatty acid ester are widely known, there has been a problem that when other active ingredients that exert additional effects are blended into these transparent solid cosmetics, the moldability, stability, or transparency is impaired.

[0006] Patent Document 6 discloses that in a transparent solid cosmetic thickened or gelled with an amino acid derivative-modified silicone, from the viewpoint of maintaining the transparency of the appearance even when an ultraviolet absorber that is poorly soluble in nonpolar oil is blended, a specific lysine derivative-modified silicone, silicone oil, a polar oil having an IOB (Inorganic Organic Balance) of 0.17 to 0.63, and an ultraviolet absorber are blended to form a transparent solid composition.

[0007] The transparent cosmetic described in Patent Document 6 contains an ultraviolet absorber. Generally, a cosmetic applied to the skin is exposed to various moisture from both inside and outside the coating film, such as moisture from the external environment like sweat and seawater secreted from the skin. Therefore, even if a high amount of a resin or a film-forming agent for imparting water resistance is blended, it is difficult to completely prevent the outflow of the ultraviolet absorber, ultraviolet scattering agent, etc., and it is inevitable that the ultraviolet protection effect will decrease.

[0008] On the other hand, the applicant has proposed an emulsified sunscreen cosmetic having an unprecedented property that the ultraviolet protection effect is improved after contact with moisture such as water and sweat by using an oil thickener or the like (Patent Documents 7 and 8).

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

[0010] As described in Patent Document 6, transparent cosmetics containing an ultraviolet absorber are known. However, when they come into contact with moisture such as water or sweat, external leakage of the ultraviolet absorber occurs, and there has been a problem that the obtained ultraviolet protection effect decreases compared to immediately after application. In order to suppress the decrease in the ultraviolet prevention effect due to contact with moisture such as water or sweat, it is conceivable to apply an oil thickener as in Patent Documents 7 and 8. However, in the case of transparent cosmetics, when trying to blend other active ingredients that exhibit additional effects, there is a problem that the stability and transparency, which is the original function, are impaired.

[0011] The present invention has been made in view of the above circumstances, and an object thereof is to provide a transparent composition that has an ultraviolet protection effect while maintaining high transparency and has the property that the ultraviolet protection effect is improved compared to immediately after application when it comes into contact with moisture such as water or sweat. [Means for Solving the Problems]

[0012] As a result of intensive studies to solve the above problems, the present inventor has found that by blending two types of oils having a refractive index in a specific range and a powder having a refractive index in a specific range with an ultraviolet absorber and an oil thickener, it is possible to produce a transparent composition in which the ultraviolet protection effect is improved compared to immediately after application while maintaining high transparency, and has completed the present invention.

[0013] That is, the transparent composition of the present invention comprises (a) an ultraviolet absorber, (b) an oil having a refractive index of 1.5 to 1.7, (c) an oil having a refractive index of 1.3 to less than 1.5, (d) a powder having a refractive index of 1.45 to 1.55 including, (b) an oil component having a refractive index of 1.5 to 1.7 and (c) an oil component having a refractive index of 1.3 to less than 1.5, the refractive index of the mixed oil component is 1.44 to 1.56.

[0014] The transparent composition of the present invention preferably further contains (e) an oil thickener.

[0015] (d) The powder having a refractive index of 1.45 to 1.55 is preferably polymethyl methacrylate, silica, nylon, cellulose, polyethylene, polyurethane, or a copolymer or coated product containing them.

[0016] (a) The mass ratio of the powder having a refractive index of 1.45 to 1.55 to the ultraviolet absorber is preferably 0.01 or more and 1 or less.

[0017] (e) The oil thickener is preferably dextrin fatty acid ester, sucrose fatty acid ester, glyceryl fatty acid ester, amino acid-based gelling agent, fatty acid or its salt, or organically modified clay mineral.

[0018] The transparent composition of the present invention is preferably solid, and its form may be stick-shaped.

[0019] The transparent cosmetic of the present invention contains the above transparent composition as a base.

Effect of the Invention

[0020] The transparent composition of the present invention has the property that the ultraviolet protection effect is improved compared to immediately after application even when in contact with moisture such as water or sweat while maintaining high transparency, so it can provide a high ultraviolet protection effect.

Mode for Carrying Out the Invention

[0021] Hereinafter, the transparent composition of the present invention will be described in detail. The transparent composition of the present invention (hereinafter, also simply referred to as the composition) (a) an ultraviolet absorber, and (b) an oil component having a refractive index of 1.5 to 1.7, and (c) an oil component having a refractive index of 1.3 to less than 1.5, and (d) a powder having a refractive index of 1.45 to 1.55, and the refractive index of the mixed oil component of (b) the oil component having a refractive index of 1.5 to 1.7 and (c) the oil component having a refractive index of 1.3 to less than 1.5 is 1.44 to 1.56. Hereinafter, each component will be described in detail.

[0022] <(a) Ultraviolet absorber> The (a) ultraviolet absorber used in the present invention (hereinafter, also simply referred to as the (a) component) is selected from those that can be incorporated into external skin preparations such as cosmetics, and is not particularly limited, but is preferably an oil-soluble absorber. Specific examples include, for example, t-butylmethoxydibenzoylmethane, ethylhexyl methoxycinnamate (octyl methoxycinnamate), phenyl salicylate, octyl salicylate, homomenthyl salicylate (homosalate), ethylhexyl salicylate, octocrylene, 2-hydroxy-4-methoxybenzophenone, polysilicone-15, ethylhexyl triazone, ethylhexyl triazone, hexyl diethylaminohydroxybenzoyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, oxybenzone-3, methylene bisbenzotriazolyl tetramethylbutylphenol, 2,4,6-triani linop-p-(carbo-2'-ethylhexyl-1'-oxy)-1,3,5-triazine, {2-[4-(diethylamino)-2-hydroxybenzoyl]} hexyl benzoate, 2,4-bis -[{4-(2-ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxyphenyl)-1,3,5-tri

[0023] In particular, t-butylmethoxydibenzoylmethane, ethylhexyl methoxycinnamate, homomenthyl salicylate, octyl salicylate, octocrylene, 2-hydroxy-4-methoxybenzophenone, etc. can be preferably used in the composition of the present invention. The ultraviolet absorber may be used alone or in appropriate combination of two or more kinds.

[0024] The compounding amount of the ultraviolet absorber is 3 to 50% by mass, preferably 5 to 35% by mass, based on the total amount of the composition.

[0025] In addition, the transparent composition of the present invention preferably does not contain a scattering agent, and even if it contains, it is desirably 0.1% by mass or less. Blending a scattering agent is not preferable because turbidity may occur and the transparency may decrease.

[0026] <(b) Oil having a refractive index of 1.5 to 1.7> (b) The oil having a refractive index of 1.5 to 1.7 is an oil having a relatively high refractive index of 1.5 to 1.7 at 25°C (hereinafter, simply referred to as (b) component or high refractive index oil). Examples of such high refractive index oils include, but are not limited to, hydrogenated polyisobutene, trimethylpentaphenylpolysiloxane, diphenylsiloxyphenyltrimethicone, diphenyldimethylsilicone, macadamia nut fatty acid phytosteryl, phytosteryl isostearate, etc. For example, as trimethylpentaphenylpolysiloxane, PH-1555HRIC (refractive index 1.58) of Toray Dow Corning, Silicone KF56 (refractive index about 1.5) manufactured by Shin-Etsu Chemical Co., Ltd., FZ-3156 (refractive index: 1.575) manufactured by Nippon Unicar Co., Ltd., as diphenyldimethylsilicone, KF-54 (refractive index 1.505) manufactured by Shin-Etsu Chemical Co., Ltd., as macadamia nut fatty acid phytosteryl, Plandool-MAS (refractive index: 1.501) manufactured by Nippon Seika Co., Ltd., etc. are commercially available, and these can be preferably used.

[0027] In the transparent composition of the present invention, the blending amount of the high refractive index oil having a refractive index of 1.5 to 1.7 is an amount such that, in combination with the oil having a refractive index of less than 1.3 to 1.5 (c) described later, the average refractive index of these mixed oils is within the range of 1.44 to 1.56. Although it varies depending on the type and combination of the components to be blended, etc., it is preferably 5 to 50% by mass, more preferably 10 to 40% by mass, and even more preferably 15 to 35% by mass with respect to the composition. The high refractive index oil may be used alone or in appropriate combination of two or more kinds.

[0028] <(c) Oil having a refractive index of less than 1.3 to 1.5> (c) The oil having a refractive index of less than 1.3 to 1.5 is an oil having a relatively low refractive index of less than 1.3 to 1.5 at 25°C (hereinafter, simply referred to as component (c) or low refractive index oil). Although not limited, examples of such low refractive index oils include, for example, diisopropyl sebacate (refractive index: about 1.43), triethylhexanoin (refractive index: about 1.45), isopropyl myristate (refractive index: about 1.43), hydrogenated polydecene (refractive index: about 1.46), glyceryl tri(caprylate / caprate) (refractive index: about 1.45), glyceryl tri(2-ethylhexanoate) (refractive index: about 1.44), cetyl 2-ethylhexanoate (refractive index: about 1.44), trimethylolpropane trioctanoate (refractive index: about 1.45), squalane (refractive index: about 1.45), α-olefin oligomer (refractive index: about 1.46), glyceryl diisostearate (refractive index: about 1.46), distearyl malate (refractive index: about 1.46), polyglyceryl triisostearate (refractive index: about 1.47), macadamia nut oil (refractive index: about 1.47), liquid paraffin (refractive index: about 1.47), isododecane (refractive index: about 1.42), isohexadecane (refractive index: about 1.43), light isoparaffin (refractive index: about 1.43), dimethylpolysiloxane (refractive index: about 1.40), polyoxyalkylene·polyalkylsiloxane (alkylene = ethylene: refractive index: about 1.42), etc. In particular, diisopropyl sebacate, triethylhexanoin, glyceryl tri(caprylate / caprate), etc. can be preferably used.

[0029] From the viewpoint of usability, the component (c) may contain a volatile oil having a boiling point of 300 ° C or lower at normal pressure. By including the volatile oil, the greasiness is reduced and the resulting finish has less stickiness.

[0030] In the transparent composition of the present invention, the blending amount of the low refractive index oil is an amount such that, in combination with the above high refractive index oil, the average refractive index of these mixed oils is within the range of 1.44 to 1.56. Although it varies depending on the type and combination of the components to be blended, etc., it is preferably 5 to 50% by mass, more preferably 10 to 40% by mass, and still more preferably 15 to 35% by mass with respect to the composition. The low refractive index oil may be used alone or in appropriate combination of two or more.

[0031] The total blending amount of the oil obtained by mixing the high refractive index oil (component (b)) and the low refractive index oil (component (c)) is not particularly limited, but is preferably 10 to 80% by mass, more preferably 20 to 70% by mass. When the blending amount of the oil is less than 10% by mass, it may be difficult to impart a glossy finish to the composition, and when it exceeds 80% by mass, stickiness may occur. Adjust the blending amounts of the component (b) and the component (c) so that the average refractive index of these mixed oils is within the range of 1.44 to 1.56. When the blending amount of the oil is less than 10% by mass, it may be difficult to impart a glossy finish to the composition, and when it exceeds 80% by mass, stickiness may occur. Adjust the blending amounts of the component (b) and the component (c) so that the average refractive index of these mixed oils is within the range of 1.44 to 1.56.

[0032] <Powder with a refractive index of 1.45 to 1.55> (d) A powder having a refractive index of 1.45 to 1.55 (hereinafter, also simply referred to as component (d)) is a powder having a refractive index of 1.45 to 1.55 in the literature value. When the refractive index is within this range, the refractive index difference from the oily component used in the present invention is small, and thereby high transparency of the base can be realized. Such powders include, but are not limited to, for example, silica, dimethylsilylated silica (about 1.46), polymethyl methacrylate (about 1.49), (HDl / trimethylolhexyl lactone) cross-polymer (about 1.5), (IPDI / poly(1,4-but Examples include cross-polymer (approx. 1.49), nylon (approx. 1.53), cellulose (approx. 1.49), polyethylene (approx. 1.51), polyurethane (approx. 1.50), silicic anhydride (approx. 1.45 - 1.50), etc. Further, these powders may be surface-treated such as hydrophobization treatment by a conventional method and then blended.

[0033] Examples of commercially available hydrophobic silica include, for example, AEROSIL R972, R972V, R972CF, R974, R976, R976S (manufactured by Nippon Aerosil Co., Ltd.) which are treated with dimethyldichlorosilane, AEROSIL R805 (manufactured by Nippon Aerosil Co., Ltd.) which is treated with octylsilane, AEROSIL R8 12, R812S, RX200 (manufactured by Nippon Aerosil Co., Ltd.), AEROSIL R202, RY200 (manufactured by Nippon Aerosil Co., Ltd.) which are treated with dimethyl silicone oil, etc. can be mentioned.

[0034] Methyl polymethacrylate is a spherical powder mainly composed of cross-linked polymethacrylic acid (PMMA), and may contain other components such as silica, etc. in an amount of several mass% or less. Examples of commercially available products include, for example, Gunz Pearl GMX-0810 (manufactured by Gunz Kasei Co., Ltd.), Microsphere M-330 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), etc.

[0035] Examples of commercially available silicic anhydride include, for example, Sunsphere L-51, L-31, H-31, H-31, NP-30, NP-100 (manufactured by AGC SI Tech Co., Ltd.), etc.

[0036] Polyurethane is a spherical powder mainly composed of urethane resin, and may contain other components such as silica, etc. in an amount of several mass%. Examples of commercially available products include, for example, TP Powder U Series (Toyo Ink Pigment Co., Ltd.), etc.

[0037] The blending amount of the powder is 0.1 to 20% by mass, preferably 0.5 to 10% by mass, based on the total amount of the composition. By making the refractive indices of the oil component and the powder uniform, even when a considerable amount of powder is blended, it is transparent and can maintain high transparency while reducing stickiness and enhancing usability. Furthermore, when a volatile oil component is included together with such a powder, it has a transparent appearance before application, but when applied to the skin, the volatile oil component evaporates, causing the refractive indices of the powder and the oil component to deviate and become translucent, resulting in a concavo-convex correction effect.

[0038] (a) The mass ratio of component (d) to the ultraviolet absorber is preferably 0.01 or more and 1 or less, and more preferably 0.01 or more and 0.5 or less. When the mass ratio of component (d) to component (a) is within this range, the effect of further enhancing the ultraviolet protection effect due to contact with moisture can be achieved.

[0039] <(e) Oil thickener> The transparent composition of the present invention preferably contains an (e) oil thickener. (e) The oil thickener (hereinafter also simply referred to as component (e)) can be appropriately selected from substances used as components that exhibit the effect of thickening the oil component by dissolving in the oil component or swelling with the oil component in cosmetics and the like. For example, dextrin fatty acid ester, sucrose fatty acid ester, glyceryl fatty acid ester, amino acid-based gelling agent, fatty acid or its salt, or organically modified clay mineral, etc. are preferred. The oil thickener may be used alone, or two or more kinds may be appropriately combined and used, and it is particularly preferred to blend two or more kinds.

[0040] Dextrin fatty acid ester is an ester of dextrin or reduced dextrin and a higher fatty acid, and can be used without particular limitation as long as it is generally used in cosmetics. It is preferable to use dextrin or reduced dextrin having an average sugar polymerization degree of 3 to 100. Further, as the constituent fatty acid of the dextrin fatty acid ester, it is preferable to use a saturated fatty acid having 8 to 22 carbon atoms. Specifically, dextrin palmitate, dextrin oleate, dextrin stearate, dextrin myristate, (palmitic acid / 2-ethylhexanoic acid) dextrin, etc. can be mentioned.

[0041] For sucrose fatty acid ester, it is preferable to use those in which the fatty acid is linear or branched, saturated or unsaturated, and has 12 to 22 carbon atoms. Specifically, sucrose caprylate, sucrose capricate, sucrose laurate, sucrose myristate, sucrose palmitate, sucrose stearate, sucrose oleate, sucrose erucate, etc. can be mentioned.

[0042] Glyceryl fatty acid ester is an esterification reaction product obtained by reacting glycerin, a dibasic acid having 18 to 28 carbon atoms, and a fatty acid having 8 to 28 carbon atoms (excluding dibasic acids), and can be used without particular limitation as long as it is generally used in cosmetics. Specifically, glyceryl (behenic acid / isostearic acid / eicosanedioic acid), glyceryl (behenic acid / eicosanedioic acid), polyglyceryl-10 (behenic acid / eicosanedioic acid), etc. can be mentioned.

[0043] Amino acid-based gelling agents include dibutyl lauroyl glutamide, dibutyl ethylhexanoyl glutamide, polyamide-8, polyamide-3, etc.

[0044] As the fatty acid, those that are solid at normal temperature can be used, for example, myristic acid, palmitic acid, stearic acid, behenic acid, 12-hydroxystearic acid, etc. can be mentioned. Further, as the salts of fatty acids, calcium salts, magnesium salts, aluminum salts, etc. of these can be mentioned.

[0045] Typical specific examples of the organically modified clay minerals include dimethyldistearylammonium hectorite, dimethylalkylammonium hectorite, benzyldimethylstearylammonium hectorite, distearyldimethylammonium chloride-treated magnesium aluminum silicate, etc. As commercially available products, Benton 27 (benzyldimethylstearylammonium chloride-treated hectorite: manufactured by Elementis Japan) and Benton 38 (distearyldimethylammonium chloride-treated hectorite: manufactured by Elementis Japan) are preferable.

[0046] The blending amount of the oil thickener is 0.1 to 40% by mass, more preferably 0.2 to 30% by mass, still more preferably 0.4 to 15% by mass with respect to the total amount of the composition. (e) When the blending amount of the oil thickener is less than 0.1% by mass, it is difficult to obtain sufficient stability, and when it is blended in excess of 40% by mass, the viscosity becomes high, and it is not preferable in terms of usability such as the elongation on the skin becoming heavy.

[0047] In the present invention, the refractive index is a value measured at 25 °C with an AUTOMATIC REFRACTOMETER manufactured by Rudolph Research Analytical, and for powders, it is based on literature values.

[0048] The transparent composition of the present invention is preferably solid. Here, "solid" means a composition that has no fluidity at normal temperature (15°C to 25°C) and normal pressure. As the dosage form, it can be in the form of a stick, a dish, an ointment, etc. In particular, the stick-shaped one is easy to use because it does not require the use of fingers or tools and can be directly applied to the skin. Furthermore, a transparent stick is also preferable because it looks good and the finished transparency can be seen just by looking at it.

[0049] "Transparent" means that when a measurement sample in which a plastic cell with an optical path length of 10 mm × an optical path width of 10 mm is melt-filled with a base portion containing no powder other than the component (d) of the transparent composition of the present invention is measured for transmittance with a spectrophotometer (U-4100 manufactured by HITACHI), the transmittance in the wavelength region of light with a wavelength of 700 nm is 70% or more. If the transmittance is within this range, it includes those that are colored.

[0050] In the transparent composition of the present invention, as long as the effects of the present invention are not impaired, arbitrary components can be blended in addition to the above essential components. Usually, arbitrary transparent cosmetics can be produced by adding components usually blended in cosmetics and by conventional methods.

[0051] Examples of the arbitrary components include, within a blending range that does not impair transparency, oil components, higher alcohols, POE (polyoxyethylene)·POP (polyoxypropylene) dimethyl ether, surfactants, moisturizing agents, sequestering agents, antioxidants, oil-soluble drugs, etc., other than (a) to (e) described above.

[0052] Examples of animal and vegetable fats and oils include, for example, cocoa butter, coconut oil, hydrogenated coconut oil, palm oil, palm kernel oil, shea kernel oil, hydrogenated oil, beeswax, hydrogenated castor oil, etc.

[0053] Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, spermaceti wax, whale wax, montan wax, rice bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, isopropyl lanolin fatty acid, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, polyethylene glycol lanolin fatty acid, POE hydrogenated lanolin alcohol ether, ceresin, microcrystalline wax, and the like.

[0054] Examples of hydrocarbon oils include liquid paraffin, ozokerite, squalane, pristane, paraffin, squalene, petrolatum, and the like.

[0055] Higher alcohols are higher alcohols having an alkyl group with 6 to 20 carbon atoms, and examples include caproyl alcohol, capryl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachinyl alcohol, and the like. The alkyl group may be branched, and may also have substituents such as an unsaturated bond, a hydroxyl group, a carboxyl group, and a phenyl group.

[0056] Examples of POE·POP dimethyl ether include alkylene oxide derivatives described in JP-A-2003-113023 and the like.

[0057] Examples of lipophilic nonionic surfactants include sorbitan fatty acid esters (for example, sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate T, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexanoate, diglycerol sorbitan tetra-2-ethylhexanoate, etc.); glycerin polyglycerin fatty acids (e.g., glycerin monoricinoleate, glycerin monoelaidate, glycerin sesquioleate, glycerin monostearate, α,α'-oleic acid pyroglutamic acid glycerin, glycerin monostearate malic acid, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); hydrogenated castor oil derivatives; glycerin alkyl ethers, etc.

[0058] Examples of the hydrophilic nonionic surfactant include, for example, POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE sorbit fatty acid esters (e.g., POE-sorbit monolaurate, POE-sorbit monooleate, POE-sorbit pentaoleate, POE-sorbit monostearate, etc.); POE-glycerin fatty acid esters (e.g., POE-glycerin monostearate, POE-glycerin monoisostearate, POE-glycerin triisostearate, etc., such as POE-monooleate); POE-fatty acid esters (e.g., POE-distearate, POE-monodioleate, ethylene glycol distearate, etc.); POE-alkyl ethers (e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); POE·POP-alkyl ethers (e.g., POE·POP - cetyl ether, POE·POP - 2-decyltetradecyl ether, POE·POP-mono butyl ether, POE·POP - hydrogenated lanolin, POE·POP-glycerin ether, etc.); POE-hydrogenated castor oil Castor oil derivatives (e.g., POE-castor oil, POE-hydrogenated castor oil, POE-hydrogenated castor oil monoisostearate, POE-hydrogenated castor oil triisostearate, POE-hydrogenated castor oil monopyroglutamic acid monoisostearic acid diester, POE-hydrogenated castor oil maleic acid, etc.); POE-beeswax-lanolin derivatives (e.g., POE-sorbitol beeswax, etc.); alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid ester; POE-alkylamine; POE-fatty acid amide; sucrose fatty acid ester; trioleyl phosphate, etc.

[0059] Examples of the humectant include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile acid salt, d,l-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO)PO (ethylene oxide-propylene oxide) adduct, Rosa multiflora extract, Digitalis purpurea extract, Melilotus officinalis extract, trehalose, erythritol, POE·POP random copolymer methyl ether, etc.

[0060] Examples of the sequestering agent for metal ions include 1-hydroxyethane-1,1-diphosphonic acid, tetrasodium salt of 1-hydroxyethane-1,1-diphosphonic acid, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, ethylenediamine hydroxyethyl triacetic acid trisodium, etc. are included. Examples of the vitamin include vitamin A, B1, B2, B6, C, E and their derivatives, pantothenic acid and its derivatives, biotin, etc.

[0061] Examples of the antioxidant include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, and the like.

[0062] Examples of the antioxidant aid include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid, and the like.

[0063] Examples of other components that can be formulated include preservatives (such as methylparaben, ethylparaben, butylparaben, phenoxyethanol, etc.); anti-inflammatory agents (such as glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, thiotaurine, hypotaurine, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (such as extract of Saxifraga stolonifera, arbutin, tranexamic acid, L-ascorbic acid, magnesium L-ascorbic acid phosphate, L-ascorbic acid glucoside, potassium 4-methoxysalicylate, etc.); various extracts (such as cortex moutan, coptis, citrus grandis, peony, ginseng, birch, sage, loquat, carrot, aloe, Japanese butterbur, iris, grape, polygonatum, loofah, lily, saffron, radix scrophulariae, Chinese cinnamon, forget-me-not, ononis, garlic, capsicum, ginger, toki, seaweed, etc.); activators (such as royal jelly, photosensitizer, cholesterol derivatives, etc.); blood circulation promoters, and the like.

[0064] In the transparent cosmetic according to the present invention, oily gelling agent components such as dextrin palmitate, glyceryl behenate eicosanedioate, polyamide-3, polyamide-8, butylamide 2-ethylhexanoylglutamate, dibutylamide N-2-ethylhexanoyl-L-glutamate can be blended as solidifying aids within the range in which the transparency of the cosmetic is maintained.

[0065] The dosage form of the transparent cosmetic of the present invention is not particularly limited, but it is preferably a gel or solid. As for its product form, although not particularly limited, for example, makeup cosmetics such as foundation, lipstick, lip gloss, lip cream, and eyeshadow, makeup base, sunscreen, skin care cosmetics, hair stick, body cosmetics, antiperspirant cosmetics, hair cosmetics such as pomade, etc. can be mentioned. It is preferably used for container filling and stick-shaped transparent solid cosmetics.

[0066] The transparent composition of the present invention and the cosmetics using the same can be prepared according to conventional methods. For example, after dissolving and dispersing the above components at 70 to 100 °C, it can be poured into a desired mold or container and cooled and solidified for preparation.

Examples

[0067] Next, the present invention will be further specifically described with reference to examples. The present invention is not limited by the following examples in any way. The blending amounts are in mass % unless otherwise specified.

[0068] The examples and comparative examples were produced by conventional methods according to the formulations shown in Tables 1 to 3. Specifically, when an oil thickener was included, this was added to the oil, heated to 80 to 130 °C and dissolved, and then the remaining components (ultraviolet absorber, powder, etc.) were added and dispersed with a homomixer until uniform. After degassing, it was solidified at room temperature to obtain each sample.

[0069] [Refractive index] The refractive index was measured at 25 °C using an AUTOMATIC REFRACTOMETER manufactured by Rudolph Research Analytical.

[0070] [Transparency] A measurement sample in which a plastic cell with an optical path length of 10 mm × an optical path width of 10 mm was melt-filled with a base portion containing no powder of the examples and comparative examples was measured for the transmittance in the wavelength region of light at 700 nm using a spectrophotometer (U-4100 manufactured by Hitachi, Ltd.).

[0071] [UV protection effect after water bath] Each sample was dropped onto a measurement plate (S plate) (a 5×5 cm V-grooved PMMA plate, SPFMASTER-PA01) in an amount of 2 mg / cm 2 , applied with a finger for 60 seconds, and after drying for 15 minutes, the absorbance of the formed coating film was measured using a U-4100 type self-recording spectrophotometer manufactured by Hitachi, Ltd. A measurement plate with nothing applied was used as a control, and the absorbance (Abs) was calculated by the following formula. Abs = -log(T / To) T: Transmittance of the sample, To: Transmittance of the measurement plate with nothing applied The measured plate was fully immersed in water with a hardness of 50 to 500 and left standing in the water for 30 minutes. Then, it was dried for about 15 to 30 minutes until the water droplets on the surface disappeared, and the absorbance was measured again. The Abs change rate (the following formula) was calculated as the UV protection ability improvement effect from the integrated Abs value (in the wavelength range of 280 to 400 nm) before and after the water bath. UV protection ability improvement effect: Abs change rate (%) = (Integrated Abs value after water bath) / (Integrated Abs value before water bath) × 10 0

[0072]

Table 1

[0073]

Table 2

[0074]

Table 3

[0075] As shown in Table 1, the transparent composition of the present invention exhibited the characteristic that the ultraviolet protection effect after a water bath was improved while maintaining high transparency. On the other hand, in Comparative Example 1, although the transparency was maintained, since it did not contain (d) powder, the ultraviolet protection effect after the water bath decreased. Also, as shown in Table 2, the transparent composition of the present invention exhibited the characteristics of high transparency and improved ultraviolet protection effect after a water bath, similar to Example 10 which did not contain it, even when it contained an oil thickener (Examples 11 to 15). On the other hand, Comparative Example 2 which contained an oil thickener but did not contain (d) powder showed a decrease in the ultraviolet protection effect after the water bath. Furthermore, as shown in Table 3, Comparative Example 3 which did not contain (b) high refractive index oil and Comparative Example 4 which did not contain (c) low refractive index oil lacked transparency.

[0076] The following transparent cosmetics were manufactured by a conventional method. Formulation Example 1: Makeup base Ethylhexyl methoxycinnamate 5% Homosalate 5% t-Butyl methoxydibenzoylmethane 2% Bis-ethylhexyloxyphenol methoxyphenyl triazine 1% Polyamide-8 20% Cetyl ethylhexanoate 40% Diphenylsiloxy phenyl trimethicone 15% Stearyl glycyrrhetinate 0.1% Tocopherol 0.5% Silica 5% Dipropylene glycol 1% Triethylhexanoin residue

[0077] Formulation Example 2: Partial foundation Hydroxystearic acid 7% Ethylhexyl methoxycinnamate 10% Ethylhexyl salicylate 5% Hexyl diethylaminohydroxybenzoyl benzoate 2% Bis-ethylhexyloxyphenol methoxyphenyl triazine 1% 2% Dibutyl Lauroyl Glutamide 3% Polyamide-8 10% Methyl Methacrylate Crosspolymer 3% Trimethylpenta Phenyl Polysiloxane 20% Hydrogenated Polydecene 0.5% Cellulose Diphenylsiloxyphenyl Trimethicone Residue

[0078] Formulation Example 3: Lip Gloss 2% Diethylamino Hydroxybenzoyl Hexyl Benzoate 10% Ethylhexyl Methoxycinnamate 1% Bisethylhexyloxyphenol Methoxyphenyl Triazine 6% Trimethylpenta Phenyl Polysiloxane 20% Caprylyl Methicone 5% Isopropyl Myristate 0.01% Isostearic Acid 0.5% Dimethylsilylated Silica 10% Polyamide-8 Diphenylsiloxyphenyl Trimethicone Residue

[0079] Formulation Example 4: Sunscreen 5% Ethylhexyl Salicylate 2% t-Butyl Methoxydibenzoylmethane 1% Bisethylhexyloxyphenol Methoxyphenyl Triazine 5% Octocrylene 1.5% Ethylhexyl Triazone 10% Homosalate 15% Diisopropyl Sebacate 15% PPG-3 Dipivalate 0.01% Sesquiisostearic Acid Sorbitan 2% Dextrin Palmitate (IPDI / Poly(1,4-butanediol)-14) Crosspolymer 1% 2% Dibutyl Lauroyl Glutamide 2% Dibutylethylhexanoyl Glutamide 0.5% PEG / PPG-14 / 7 Dimethyl Ether Diphenylsiloxyphenyltrimethicone Residue

[0080] Formulation Example 5: Cosmetic Base 5% Homosalate 5% Ethylhexyl Salicylate 2% Diethylamino Hydroxybenzoyl Hexyl Benzoate 1% Bis-Ethylhexyl Oxyphenol Methoxyphenyl Triazine 20% Isododecane 1% Dimethylsilylated Silica 0.1% Trimethylsiloxysilicic Acid 20% Diphenylsiloxyphenyltrimethicone 15% Isopropyl Myristate 10% Alcohol Ethylhexyl Palmitate Residue

[0081] The clear cosmetic of the above formulation example is a clear cosmetic that is excellent in the transparency of the base appearance, has a good usability, and has an improved ultraviolet protection effect after bathing. Some embodiments of the present disclosure are described in the following [Item 1]-[Item 7]. [Item 1] (a) An ultraviolet absorber, (b) An oil having a refractive index of 1.5 to 1.7, (c) An oil having a refractive index of less than 1.3 to 1.5, (d) A powder having a refractive index of 1.45 to 1.55, (e) An oil thickener and having a refractive index of the mixed oil of the (b) oil having a refractive index of 1.5 to 1.7 and the (c) oil having a refractive index of less than 1.3 to 1.5 is 1.44 to 1.56, and the (e) oil thickener is dextrin fatty acid ester, sucrose fatty acid ester, glyceryl fatty acid ester, an amino acid-based gelling agent (excluding lysine derivative-modified silicone), a fatty acid or a salt thereof, or an organically modified clay mineral. A transparent composition. [Item 2] The transparent composition according to Item 1, wherein the amino acid-based gelling agent is dibutyl lauroyl glutamide, dibutyl ethylhexanoyl glutamide, polyamide-8 or polyamide-3. [Item 3] The transparent composition according to Item 1 or 2, wherein the (d) powder having a refractive index of 1.45 to 1.55 is polymethyl methacrylate, silica, nylon, cellulose, polyethylene, polyurethane, or a copolymer or coated product containing them. [Item 4] The transparent composition according to Item 1, 2 or 3, wherein the mass ratio of the (d) powder having a refractive index of 1.45 to 1.55 to the (a) ultraviolet absorber is 0.01 or more and 1 or less. [Item 5] The transparent composition according to any one of Items 2 to 4, which is solid. [Item 6] The transparent composition according to Item 5, which is in a stick form. [Item 7] A transparent cosmetic containing the transparent composition according to any one of Items 1 to 6 as a base.

Claims

1. (a) an oil-soluble ultraviolet absorber; (b) an oil having a refractive index of 1.5 to 1.7; (c) an oil having a refractive index of less than 1.3 to 1.5; (d) a powder having a refractive index of 1.45 to 1.55; (e) an oil thickener and having a refractive index of the mixed oil of the (b) oil having a refractive index of 1.5 to 1.7 and the (c) oil having a refractive index of less than 1.3 to 1.5 of 1.44 to 1.56, and the (e) oil thickener being dextrin fatty acid ester, sucrose fatty acid ester, glyceryl fatty acid ester, amino acid-based gelling agent (excluding lysine derivative-modified silicone), fatty acid or its salt, or organically modified clay mineral. A transparent composition.

2. The transparent composition according to claim 1, wherein the amino acid-based gelling agent is dibutyllauroylglutamide, dibutylethylhexanoylglutamide, polyamide-8 or polyamide-3.

3. The transparent composition according to claim 1 or 2, wherein the (d) powder having a refractive index of 1.45 to 1.55 is polymethyl methacrylate, silica, nylon, cellulose, polyethylene, polyurethane, or a copolymer or coated product containing them.

4. The transparent composition according to claim 1, 2 or 3, wherein the mass ratio of the (d) powder having a refractive index of 1.45 to 1.55 to the (a) oil-soluble ultraviolet absorber is 0.01 or more and 1 or less.

5. The transparent composition according to any one of claims 2 to 4, which is solid.

6. The transparent composition according to claim 5, which is in stick form.

7. A transparent cosmetic containing the transparent composition according to any one of claims 1 to 6 as a base.

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