Treatment varies from patient to patient depending on the type of lesion, size of the affected area, color of the patient's skin and depth to which the abnormal pigment extends beneath the surface of the skin. Some lesions, such as "age spots" will require only a few pulses, while others, such as cafe au lait birthmarks, will require more. Some lesions require re-treatment. It is very important to use careful sun protection before and after treatment with laser.
Melasma may clear away with 1-2 laser sessions.