The principle of laser hair removal is the principle of selective thermodynamics. That is, the selected wavelength only acts on the melanocyte particles and does not act on the normal tissue of the skin, and the selected pulse width only acts on the melanocyte particles in the hair follicle and does not act on the melanin in the basal layer of the skin. Laser can accurately and selectively treat hair removal with melanocyte particles as the target. The temperature of the hair follicle is increased sharply after the laser removes the melanin, which causes the hair follicle to absorb the energy.
Principle of laser and photon hair removal_ What are the principles of photon hair removal and laser hair removal
Photon hair removal uses the principle of “selective absorption of light”, the melanin cell particles in the hair follicle absorb light of specific wavelength and generate heat energy, so as to make the hair follicle shrink and crack, inhibit hair growth, and achieve the effect of removing excess hair while avoiding damage to surrounding tissues. Photon hair removal technology provides a soft, non interventional therapy to effectively solve various hair removal problems. Photon hair removal has a wide spectrum and simple and easy-to-use parameter settings.
Because the target of laser and photon is clear, it only hits the melanin cell particles in the hair follicle and will not damage other accessory tissues of the skin, so it will not affect the perspiration function of sweat glands or damage the lymphatic system.
The growth of hair should go through three stages: growth period, degenerative period and resting period. There are melanocyte particles in hair follicles during the growth period, so laser mainly destroys melanocyte particles in hair follicles during the growth period, while there are few melanocyte particles in hair follicles during the degenerative period, and there are no melanocyte particles in hair follicles during the rest period. Laser treatment is less effective than that during the growth period. When hair follicles in the rest period change into hair follicles in the growth period, laser is more effective, Therefore, laser hair removal needs to be treated three to five times to complete its course of treatment. The time interval between treatments was 20-45 days. Generally speaking, the treatment effect of axillary hair is better, and the leg hair and hairline can also be improved.