Irregular skin tone is triggered by uneven production of melanin, the pigment produced by melanocytes in the skin. Melanocytes become stimulated to produce excess melanin which results in patchy discoloration. Causes of discoloration may include chronic sun exposure (solar lentigines), skin inflammation or injuries (post inflammatory hyperpigmentation), rise of estrogen – through birth control pills or pregnancy (melasma), and aging. This skin brightener address skin discoloration caused by all sources. A more even and brighter skin tone makes skin appear more youthful.