Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic L Glutathione vs. oxidized vs. Reduced Glutathione Where did your glow go? L Glutathione is often called the master antioxidant, a tripeptide that supports skin radiance, oxidative stress support, immune function, and the body's natural detox pathways. Ours is Chemical structure of tripeptides in glutathione. Download Scientific Diagram