Glutathione is a tripeptide made up of three critical amino acids, cysteine, glutamine, and glycine. Combined, these three amino acids make a powerful and essential antioxidant necessary for the body's appropriate functioning. Because it works as an antioxidant and detoxifier, it has a powerful rejuvenating effect on not only the body but also how your skin looks and feels. It promotes better sleep, increased energy, decreased inflammation, clearer vision, and stronger hair, and nails.