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? The ingredient nobody's talking about but should be. Glutathione is your body's ultimate defender against oxidative stress, and most people have never heard of it. Ours has no artificial colors, What is glutathione and why must we protect patient access to it?