Glutathione Injection Cost, Benefits, Side Effects Glutathione is a powerful antioxidant often marketed for brighter, more even skin tone and reduction of dark spots from acne or sun damage. While oral glutathione may offer mild skin brightening Glutathione as a skin whitening agent: Facts, myths, evidence and controversies Indian Journal of Dermatology, Venereology and Leprology Intravenous glutathione for skin lightening: Inadequate safety data Full article: Glutathione as an oral whitening agent: A randomized, double blind, placebo controlled study