摘要 |
PURPOSE:A beauty cosmetic for preventing the change of the skin into black effectively, causing no change with time such as change in color, smell, deactivation through decomposition, etc., comprising one or more of ursolic acid, its salt, and ursolic acid derivative. CONSTITUTION:A beauty cosmetic comprising one or more compounds shown by the formula (R1 is H, Na, K, NH4, H2N(CH2)2, Ca Mg, alcohol alkyl residue; R2 is H, or residue of fatty acid acyl). The compound shown by the formula is a substance which is stable and shows tyrosinase inhibiting activity, especially a compound wherein the acryl group of R2 has 2-20C and the alkyl group of R1 has 1-20C has improved stability and good handeability for preparing cosmetic, and the amount of the compound shown by the formula used is 0.1-1wt% based on total amount. |