Lasers can selectively target dark, coarse hairs while leaving the surrounding skin undamaged.
Each pulse of the laser takes a fraction of a second and can treat many hairs at the same time. The laser can treat an area approximately the size of a quarter every second. Small areas such as the upper lip can be treated in less than a minute, and large areas, such as the back or legs, may take up to an hour.
Most patients have permanent hair loss after an average of three to seven sessions.