Peptide of the Week: Glutathione Often called the body's master antioxidant, glutathione plays a vital role in detoxification, immune defense, and cellular protection. In the wellness and aesthetics space, it's widely discussed Glutathione 1500mg: High Purity Antioxidant Research Glutathione in skincare. Heres the 60 second version., Antioxidant? YES. Brightening potential? Maybe., Unstable, temperature sensitive, and smells funky , Bonus ingredient, not a must have. Tried Glutathione The Ultimate Antioxidant Peptide Glutathione 1500 mg