WHITENING COSMETIC COMPOSITION

摘要

Disclosed is a whitening cosmetic composition comprising .gamma. -L-glutamyl-L-cystine, .gamma. -L-glutamyl-L-cysteine disulfide, oxidized glutathione or a derivative thereof, the amino group of which is acylated with an alkanoyl group or an aroyl group. The whitening cosmetic composition of the present invention have extremely good in water solubility and heat stability and stability during storage and show a melanin formation inhibitory activity against melanoma cells without any cytotoxicity.