Glutathione: The Master Antioxidant Core Med Science Frontiers Research progress of glutathione peroxidase family (GPX) in redoxidation True or False? Glutathione isn't just a skin brightening agent, its power goes far beyond. From promoting healthy skin to reducing melanin production, this antioxidant hero works deep to Denaturing vs. reducing especially in the context of gel electrophoresis, such as SDS PAGE The Bumbling Biochemist Glutathione, a tripeptide found in virtually all cells, functions as a reducing agent. The structure of glutathione is: What amino acids make up glutathione? Homework.Study.com