glutathione Glutathione Skin Perfecting Brightening & Dark Spots Removal 4 Steps S How to Use Glutathione Cream for Skin Whitening Glutathione facts: 1. Glutathione is an important antioxidant in the body that helps protect cells from damage caused by free radicals. It is found in almost every cell and is composed of Benefits of Glutathione." Glutathione is a compound involved as a coenzyme in oxidationreduction reactions in cells. It is a tripeptide derived from 3 amino acids: Cysteine, glutamate (from glutamic acid), and glycine.