Description: Brightening Serum Azelaic Acid 5%, Alpha Arbutin 2%, Glutathione 2% This highly active serum provides a poly-focal, clinical, approach to areas of skin discoloration. It contains, azelaic acid to help calm inflammation, alpha-arbutin and glutathione to inhibit melanin synthesis, the main cause of pigmentation, together with vitamins E (and) C to provide antioxidant protection.