| abstract |
PURPOSE: To obtain a whitening cosmetic excellent in whitening effect and preservability in storage thereof by containing an ascorbic acid derivative. n CONSTITUTION: An ascorbic acid derivative of formula I or II [R 1 and R 2 are group of formula III (R 3 and R 4 are H or CH 3 ; R 5 is 1-20C hydrocarbon, (CH 2 CH 2 O) n -CH 2 CH 2 group; (n) is 1-20; or R 6 -A-R 7 group; R 6 and R 7 are 1-10C hydrocarbon; A is O, CO or NR 8 ; R 8 is H, lower alkyl, fatty lower acyl, etc.] is used in an amount of 0.1-10wt.%, and a perfume, a preservative, a pigment, a skin-nutritive substance, etc., are suitably blended therewith to obtain the objective cosmetic. As the cosmetic form, cream, emulsion, lotion, powder, etc., are available. Since the ascorbic acid derivative is contained, a high tyrosinase-inhibitory effect, an excellent inhibitory effect on melanin formation and an excellent effect on recovery of brightness of the skin color are shown. n COPYRIGHT: (C)1992,JPO&Japio |