.This serum contains Glutathion, a detoxifying agent, combined with the stimulating benefits of Vitamin C. Its luscious texture is ideal for applying its anti dark spot benefits. For radiant, soft and even-looking skin with a revitalized look. 3.Vitamin C is a powerful antioxidant, it is known to be the most common antioxidant found in human skin. It is critical in collagen and elastin synthesis. Antioxidants also prevent damage to our skin by neutralizing free radicals, which are generated by our bodies when exposed to certain conditions, including pollution and UV rays. 4.How to use: After facial cleaning, evenly drop 1-2 drops of the serum and apply serum sparingly to facial areas until competely absorbed. Use twice daily in the morning and light.