Laser Hair Removal
Laser hair removal is the process of removing unwanted hair by means of exposure to pulses of laser light that destroy the hair follicle. The light is absorbed by the pigment, which damages the follicle enough to retard future growth. Lasers can remove hair for anywhere from several months to years, as the results differ widely from person to person.
Number of sessions:
Hair grows in several phases (anagen, telogen, catagen) and a laser can only affect the currently active growing hair follicles (early anagen). Hence, several sessions are needed to kill hair in all phases of growth.
Multiple treatments depending on the type of hair and skin color have been shown to provide long-term reduction of hair. Most patients need a minimum of seven treatments. Current parameters differ from device to device but manufacturers and clinicians generally recommend waiting from three to eight weeks between sessions, depending on the area being treated. The number of sessions depends on various parameters, including the area of the body being treated, skin color, coarseness of hair, reason for hirsutism, and sex. Coarse dark hair on light skin is easiest to treat. Certain areas (notably men's faces) may require considerably more treatments to achieve desired results.