Melasma is a dark, discolored patches on the skin. It appears on the central face, chin and jawline. 90% of women are prome to this condition than men, especially to women during reproductive age (20-55). Sunburn is always melasma, but melasma is not always sunburn. Melanin is a natural skin defense (sunscreen). Melanocytes produces melanin. So listen to know the cause, treatment and prevention of Melasma.