By taking Glutathione whether orally, topically, or intravenously can help to increase the capacity of Glutathione in your body. This supplement will be absorbed by the bloodstream and taken to the liver which then creates natural Glutathione and export to the other cells. Glutathione can lighten your skin because it is made up of three amino acids: Glutamine, Cysteine, and Glycine. Cysteine is the main component and abundant levels of Cysteine in the body has been shown to lower overall melanin production in the body by inhibiting tyrosinase. Tyrosinase is an enzyme that stimulates melanin production. It changes the metabolic pathway of melanin from synthesizing darkly pigmented melanin to creating lightly pigmented melanin resulting in a gradual shift to lighter skin tones naturally. It normally takes 3-6 months to brighten your skin depends on your skin darkness. I think you should concentrate on skin hydration instead of skin lightening. Take a skin hydration IV infusions including the ingredients like Vitamin B12 and B complex. This will do the job and give you brighter and healthy skin.