What is Glutathione and Why Do You Need it? Injectable Glutathione What is Glutathione and does Glutathione work for skin lightening Dr. Michele Green M.D. NYC What does the evidence indicate regarding the efficacy and safety of oral glutathione supplementation in healthy adults? 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 Glutathione: What It Is and How It Works Sculpt MD