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AssigneeCosmed Pharmaceutical Co., Ltd.
InventorsYing-shu Quan, Hiroshi Tanaka, Tomohiro Murayama, Fumio Kamiyama
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Provided are a means for crystallizing a valuable substance that is unstable in an aqueous solution state and stably dispersing the substance in an oily medium, an aqueous medium, or an emulsified medium in which the oily medium and the aqueous medium are mixed, and to a composition for application to skin with which a crystallized s absorbed through the skin. A skin care composition for application to skin, including a valuable substance that is dispersed in a crystalline state, and a method for producing a skin care composition for application to skin, the method including a step of preparing a solution of a valuable substance at a supersaturation concentration, adding the solution to a composition for application to skin, and precipitating crystals while stirring under cooling.
A skin care composition for application to skin, comprising a valuable substance that is dispersed in a crystalline state.
A skin care composition for application to skin, comprising a valuable substance that is dispersed in a crystalline state, wherein the valuable substance is a needlelike crystal, and a length of the crystal is 5 μm or more and 3000 μm or less.
A method for producing a skin care composition for application to skin, the method comprising a step of preparing a solution of a valuable substance at a supersaturation concentration, adding the solution to a composition for application to skin, and precipitating crystals while stirring under cooling.
A method for producing a skin care composition for application to skin, the method comprising a dispersion step of preparing part of a valuable substance as a solution having a supersaturation concentration, adding the solution to a composition for application to skin, and precipitating crystals while stirring under cooling;
A method for producing a skin care composition for application to skin, the method comprising a step of adding crystals of a valuable substance to a composition for application to skin and dispersing the crystals.
Dependencies are inferred from the claim text.