Laser Hair Removal is the use of laser energy to produce long-term hair reduction. This is accomplished by producing heat in the hair, which is transferred to the hair follicle, which in-turn produces inflammation. The hairs go through three different stages during their life cycle at different periods of time and are most vulnerable to laser at their active stage of life. This is one of the reasons why several treatments are required to assure the destruction of hair follicles. The laser is locked on the target which is the melanin pigment contained within the hair shaft. The tricky part of Laser Hair Removal is targeting it without damaging the melanin pigment in the surface of the skin.
Thus the laser light has to be long enough to heat the hair, but not too long to allow that heat to spread to the surrounding skin causing damage. Light skin makes Laser Hair Removal easier to perform. Fewer treatments are required, and better, faster results are obtained. People with darker skin can be treated, but results are slower, more sessions are required, and greater expertise is required on the part of the laser technician. Therefore, the darker a patient’s skin, the more difficult it is to avoid injuring the surface of the skin while treating the hair. Laser Hair Removal must be individualized for each patient. The darker a patient’s skin, the more difficult to avoid injuring the surface of the skin while treating the hair. Laser Hair Removal must be individualized for each patient.
Dark hair absorbs more laser energy and is, therefore, much easier to treat. Coarse dark hair responds the best to laser treatment. Light hair is more difficult to treat, while blonde or red hair being extremely difficult to treat. Multiple treatment sessions are required, and results are variable. Blonde or red hair usually contains pheomelanin, which absorbs laser energy less avidly than the eumelanin pigment which is present in black or brown hair.