Treatment and Prevention of Melasma Relapses by Using 1064nm 650 Microsecond Laser

One session of laser on one side of the face (randomly assigned for each patient for the duration of the study) will be performed every other week for 12 weeks for a total of 6 sessions. All the patients will apply the entire face a sunscreen of sun protection factor 50 with high UVA protection (UV Mune 400; La Roche Posay) during the entire study duration.