The principle and operation of laser and photon hair removal are similar in that they both use the thermal energy of the light source to destroy the hair follicles to achieve permanent hair removal. The effect of hair removal is permanent and the hair roots are coagulated and necrosed due to heat, thus achieving permanent hair removal. Hair removal areas include: lip hair, hairline, beard, armpit hair, bikini area, body hair on the limbs and all other areas with increased hair. Hair removal treatment is non-invasive, safe and reliable, and does not affect the secretion of sweat glands, does not affect work and study, with treatment as you go. “I’ve used many hair removal products, but they all fall out and grow back, and I suffer a lot of pain for nothing. Is it really permanent to do laser hair removal? Will it hurt the skin?” The skin is like a transparent cellophane, the hair follicle is the growth center of the hair, which has a lot of melanin, laser irradiation can be through the skin directly detonate the pigment in the hair follicle, to achieve the purpose of destroying the function of the hair follicle, natural body hair will not grow. The laser only acts on the melanin in the hair follicle, while there is no melanin in the sweat glands, so there is no damage and no need to worry about other physiological functions of the skin, such as perspiration, regulation of body temperature, sensory functions, etc. In addition, there are certain differences in the growth cycles and depths of different parts of the hair, and the number of treatments may also vary. There are three periods of hair growth: the anagen phase, the resting phase and the regression phase. Usually only part of the body hair is in the anagen phase, so laser and photon hair removal treatment can not be successful at once, generally need several times of treatment to achieve the desired effect, the interval between treatments depends on the site, usually one to three months.