Glutathione is thought to improve cellular metabolism and oxygen consumption in the skin. It has been discovered to shield fibroblasts from free radical-induced oxidation and to serve as a potent antioxidant. According to research, it acts as a depigmentation agent or skin-lightener by deactivating the tyrosinase enzyme and quench free radicals that lead to the production of tyrosinase and melanin.

See also:
Antioxidant
Peptides