L Glutathione and Vitamin C: Powerful Antioxidant Duo Zeroharm Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Glutathione is a natural antioxidant your body makes, and it can influence melanin production which is why its sometimes marketed for skin brightening., Oral supplements are mostly broken down in The Rockefeller University How the antioxidant glutathione keeps mitochondria healthy