申请人:WILLE, Jr. John Jacob
公开号:US20100158842A1
公开(公告)日:2010-06-24
A cosmetic and dermatological composition comprises 2, 3-dihydro-4-hydroxy-2-oxo-1-H-indole-3-acetic acid (4-hydroxy-1-oxindole-3-acetic acid) as an active ingredient for use as a melanin inhibitor and as an anti-tyrosinase enzyme inhibitor. This composition is excellent as a skin whitening agent. Since it also has potent antioxidant and anti-irritant activities it is useful in a cosmetic composition for improving hyperpigmentation disorders of the skin.