Melasma is a common skin problem that causes brown to gray patches on the cheeks, bridge of the nose, forehead, chin, upper lip, forearms, and neck. These patches can be especially bothersome when they occur on the face because they create an uneven skin tone that can be difficult to cover with makeup. Melasma can be caused by hormones, pregnancy, birth control pills, or sun exposure. When melasma is caused by hormonal changes, it will sometimes fade away as the body adjusts, but in other cases, fading on its own is not likely. So, what can be done to reduce the appearance of melasma?