A laser produces a focused beam of highly concentrated light which is then absorbed by the melanin in the hair surrounding the hair follicle. The pigment in the follicle absorbs the laser energy and converts it into heat, which selectively damages and disables the hair follicle. The laser is pulsed for only a fraction of a second. The duration is determined in order to be effective on the hair follicle while leaving no damage to pores or skin structures. Some of the hair is shed immediately after treatment; the rest is shed over the next 2 to 3 weeks.

All hair grows in cycles that consists of three stages– theAnagen phase (active growth), Catagen phase (dormant growth) or Telogen phase (fall-out stage). Hair can only be permanently destroyed in the Anagen (active) phase when the hair follicle has an abundance of colour and is being fed by blood vessels. The heat generated from the laser light seals off the blood vessels to these active hairs. 50 – 85% of hair are in the active growth phase at one time.

Typically 25-35% of these hairs contain enough pigment to be permanently reduced. Hairs that survive will come back, usually weaker and finer in texture. The treatment program takes a phased approach to laser hair reduction to coincide with the Anagen phase of hair growth to maximize the effectiveness of each treatment.