| 摘要 |
PURPOSE:To obtain an external agent for akin, having excellent effect to prevent the discoloration and the lowering of the UV-absorptivity, by compounding 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane with an organic acid and/or it salt. CONSTITUTION:The objective agent can be produced by compounding the compound of formula with an organic acid and/or its salt (e.g. gluconic acid, ascorbic acid, succinic acid, citric acid, lactic acid, tartaric acid, butyric acid, oxalic acid, malonic acid, valeric acid, formic acid, acetic acid, propionic acid, etc.) at a weight ratio of 1:1/5,000-20, preferably 1:1/1,000-10. The base used in the above agent is e.g. cosmetics of solubilized-type, emulsion-type, powder- type, powdery dispersion-type, two phase W/O-type, three phase W/O/ Powdery-type, etc. It may be compound further with a natural extract such as animal or vegetable oil, ester oil, etc., a humectant such as polyhydric alcohol, a thickener such as clay mineral, a preservative, a surfactant, an ultraviolet absorber, etc. |
