Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Frontiers Glutathione: new roles in redox signaling for an old antioxidant 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 What is glutathione and why must we protect patient access to it?