Glutathione is a small protein made of three amino acids. It is often called the master antioxidant because it helps regenerate other antioxidants like vitamin C and vitamin E. Key Benefits Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Antioxidant Green Factories: Toward Sustainable Production of Vitamin E in Plant In Vitro Cultures ACS Omega Glutathione Skin Whitener: Dermatologist Guide 2026