L-Glutathione plays an important role in preventing oxidative damage to the skin In addition to its many recognized biological functions, glutathione has also been associated with skin lightening ability. Glutathione utilizes different mechanisms to exert its action as a skin whitening agent at various levels of melanogenesis. Key features of L-Glutathione are smoothing and whitening, lightening dark spots, anti-aging and anti-wrinkles and nourishing the skin.