The lasers
The Principles :
It is a light which is coherent, monodirectional, amplified by a milieu actively selected which permits to go out under the form of a powerful beam of light in treating with the length of wave which corresponds to the target concerned, here the melanin of the hair, and transmits by a fibre or an optic arm to the tissue.
The skin possesses 2 natural chromophores which contribute to its normal colour, melanin and haemoglobin, these absorb different lengths of beam and can constitute the targets for the laser lights from the length of beam given.
Thus the hair presents a bulb to the vascular structure to the high melanin content which by its melanin constitutes a target for the lasers which corresponds to the length of beam.
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