Description Taking L-Glutathione (Reduced Glutathione or GSH) orally, helps boost the body’s capacity to create glutathione. Ideally, supplemental glutathione will be absorbed into the blood stream when taken to the liver, which will then create natural glutathione and export it to other cells.The increase in glutathione lightens skin because glutathione is made up of three amino acids: cysteine glutamine and glycine. Cysteine is the main component and abundant levels of cysteine in the body has shown lower overall melanin production in the body by inhibiting tyrosinase (an enzyme that stimulates melanin production) and changing the metabolic pathway of melanin from synthesising dark pigmented melanin(eumelanin) to create light pigmented melanin (phaeomelanin). The result is gradual shift of lighter to lighter skin tones, naturally and from the inside out.L-Glutathione dietary supplement