The SOD in V-SOD is naturally present in the body; it is a major antioxidant which acts as a real shield against free radicals. However, SOD is not renewed by food and its activity decreases with age or in so-called oxidative situations. GliSODin promotes the natural production of SOD and preserves the antioxidant activity of the body. With vitiligo, skin cells show higher levels of oxidative stress which leads to the destruction of melanocytes.