Laser hair removal works on the principle of selective photothermolysis. The laser emits a concentrated beam of light that is absorbed by the pigment (melanin) present in the hair follicles. The heat generated by the laser damages the hair follicles, inhibiting or delaying future hair growth.
Multiple sessions are needed since hair grows in cycles, for optimal results. Typically, a series of 6 to 8 sessions spaced 4-6 weeks apart is recommended. This ensures that the laser targets hair follicles in various growth stages, effectively reducing hair growth over time.
Laser hair removal can be performed on various body areas, including the face, legs, arms, underarms, bikini line, back, and chest. The skin is usually cooled or numbed to minimize discomfort during the procedure. Sun exposure before laser hair removal treatment can result in temporary change of skin pigment so it is very important to keep the area you want treated out of the sun prior to your treatment for 2 weeks.
A test patch may also be conducted to assess skin reactions and determine the appropriate laser settings for the individual.
After laser hair removal, the treated area may appear slightly red or swollen, but this usually subsides within a few hours to a day. It is important to avoid sun exposure and use sunscreen on the treated area to prevent complications and protect the skin. The treated hair will gradually fall out over the following weeks, and subsequent sessions will target new hair growth.
Laser hair removal can significantly reduce hair growth, but it may not permanently eliminate all hair. Most individuals experience a noticeable reduction in hair density and thickness, resulting in smoother skin. Maintenance sessions may be required to target any regrowth over time.