Glutathione is often misunderstood as a skin whitening solution but the science tells a very different story. It is primarily an antioxidant that works against oxidative stress and free radical damage inside 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 Skin Whitening Injections : Everything You Need to Know How Much Glutathione Should I Take for Skin Whitening?