Ask the Doctors What do glutathione supplements do? UCLA Health Glutathione The Ultimate Antioxidant Purifi IV 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 Before you spend money on glutathione, read this first. Topical, oral, injectable what actually works and what's just marketing? #funskincare #funingredientsinfographic101