Laser hair removal uses a laser or a concentrated, high-heat beam of light to destroy the structure of the hair follicles and remove unwanted hair.
During the process, the laser beam affects hair follicles in the anagen or active stage. Meanwhile, it leaves hair follicles in the catagen or dormant phase unaffected. When the hair follicles in the catagen stage grow and reach the anagen phase, hair will grow back.
Keep in mind that laser therapy only heats hair follicles and makes them dormant. It destroys their structure but does not destroy the follicles themselves.
The procedure has long-lasting results and helps remove up to 90% of body hair over the long term. It takes multiple sessions to achieve this effect, usually around 6 to 12 sessions. Each session will have a gap of four to six weeks. But even with these many sessions, some hair may grow back. So, you’ll need touch-up treatments once or twice a year.
The number of sessions you need depends on the amount of body hair and the rate at which your hair regrows. The speed of hair growth varies among different people as many factors affect it. These factors include hair color, skin tone, and the location of the hair on the body.
Once a treatment session ends, you’ll notice that the body hair on the treated areas begins to fall out. It will be pushed out of the skin over several weeks until all the hair in those areas disappears. How much body hair falls out after each session depends on the area. Nonetheless, after each treatment, hair growth may be reduced by 10 to 20 percent.