Melasma appears on the skin as tan, brown, or gray-blue spots patches that somewhat resemble freckles. Melasma can affect any part of the body exposed to sunlight, so the condition often worsens in summer. It is a common dermatological disease that often appears on the face - cheeks, lips, nose, and forearms.

Melasma is very common among pregnant women, so it is sometimes called the "mask of pregnancy.” Melasma is typically chronic, but symptoms can be treated with customized compound medications in order to select particular ingredients according to the patient’s specific peculiarities.