L-Glutathione is an antioxidant agent which inhibits melanin synthesis thus improving skin. Vitamin C is an antioxidant agent which helps to increase collagen synthesis, stabilize collagen fibres, and decrease collagen degradation thus reducing pigmentation. Astaxanthin is a carotenoid which provides protection from sun irradiation thus improving the glow of the skin. Take Xantox Glo Tablet as advised by your doctor. Swallow the medicine as a whole with water. Do not chew or crush the medicine. Consult your physician if any allergic reactions occur while taking the medicine.