The basic treatment principle of the semiconductor laser hair removal treatment instrument is selective photothermolysis. The outer hair root sheath in the hair follicle is rich in melanosomes, which can selectively absorb the energy of the laser. The 808nm laser emitted by this machine is easy to be absorbed The colored hair follicles absorb without damaging the epidermis tissue, the energy emitted by the light is absorbed by the hair and the pigment in the hair follicles and then converted into heat, thus increasing the temperature of the hair follicles, and when the temperature rises to a certain level, the hair follicles will be irreversibly damaged. So as to achieve the purpose of permanent hair removal.
Hair growth is divided into growth phase, catagen phase and resting phase. The three periods repeat themselves. The laser is only effective on the hair in the growth phase, and has no effect on the hair in the catagen and telogen phase. Generally speaking, the hair in the growth period accounts for 1/5 to 1/3, so laser or photon treatment must be performed about 5 times in a row to completely remove the hair.
It should be noted that the content of melanin in light-colored hair and skin is less, so the execution plan should be formulated according to individual differences when using it. 755nm is for light hair and light thinning hair, 808-810nm is suitable for most skin tones and most hairs, 1064nm is more penetrating, more suitable for dark skin and deep hair treatment