Laser hair removal
Laser hair removal understanding
The medical laser hair removal has become the preferred hair removal method because it is ultimately safe (provided it is practiced by doctors) and now a reasonable cost.
The laser is a source of coherent monochromatic light outputting a wavelength determined for each type of laser.
For selecting a hair removal laser whose light corresponds to a wavelength selectively absorbed by melanin (brown pigment that colors hair and hair) and causes thermal destruction of the hair follicle.
The evolution of the hair takes place in 3 phases: anagen, catagen and telogen. The three phases of the hair cycle coexist on the same skin area.
- The anagen phase , growth phase lasts between one and three months.
- The catagen phase is a short phase of regression.
- The telogen phase , resting phase lasts from several months to several years before ending in the fall of the hair.
The laser effectively acts on the hairs in the growth phase, so only about 20% of the hairs of the treated area will be permanently destroyed. To treat all hairs, so it will take several sessions. The interval between sessions is for first meetings between 4 and 8 weeks.