For a hair to be permanently removed:
– The destruction of the bulb (root) of the hair is imperative.
– The light beam (and the heat) sent by the laser is absorbed by the hair on the surface then transmitted deep down along it.
To destroy a hair in a permanent way, it is necessary that this hair is both visible on the surface and attached to its root. This is possible only when the hair is in growth phase (anagen).
Knowing that 10 to 30% of our hair is in the anagen phase, it takes several sessions to eradicate the hair on a given area (armpits, bikini, legs, arms, face).
The hair cycle varies between 2 months (upper lip) and 6 months (legs and thighs).