Melasma is a skin condition in which dark patches appear on the face (forehead, cheeks, and upper lip). It is due to excessive pigment (melanin) collecting in the skin. The dark patches usually have distinct edges and are symmetrical (similar on both sides of the face). When it occurs during pregnancy, it is often referred to as “chloasma” or the “mask of pregnancy.”
Melasma is very common and occurs in up to six million American women. Although people with melasma may be concerned about its appearance, it is a harmless condition that causes no other health problems.

Treatment. Treatment results vary greatly among individuals. Your recommended treatment will depend largely on your type of melasma, dermal or epidermal. Here are the types of treatment available
• Medications: Called “bleaching” or “depigmenting” agents that cause skin to stop making melanin. These include Hydroquinone, topical retinoids and TriLuma
• Procedures: These may include chemical peels, dermabrasion, or lasers. Fractional lasers have been found to be particularly effective for some types of melisma

(Source: Vivicare Inc.)