A 1200mg Glutathione injection is promoted for skin whitening and other cosmetic and wellness purposes, Glutathione injections work by clearing the body of toxins and free radicals that lead to hyperpigmentation, age spots, sun spots, wrinkles, acne, and even the skin complexion. It contains Glutathione, an antioxidant made up of three amino acids: glycine, glutamic acid, and cysteine. It can take 6 to 12 weeks to see a significant difference in skin tone with glutathione skin treatment. However, individual results will depend on how consistently you receive treatment and your body's natural response to glutathione.