What is the principle and characteristics of laser hair removal

Laser hair removal is based on the principle of selective photothermal dynamics. By reasonably adjusting the laser wavelength and beam, it will penetrate the surface of the skin and finally be absorbed by the hair follicle. Through the selective absorption of laser energy, the hair follicle will be damaged, so that the hair will lose the ability of regeneration without damaging the surrounding tissue. Plastic experts adjust the laser to a specific wavelength to pass through the epidermis. The effect of laser hair removal is irreversible due to the endothermic necrosis of hair follicles. Therefore, laser hair removal or photons can achieve the hair removal effect of long-term hair removal.

Principle and characteristics

The use of cooling system can effectively protect the skin from laser burning in the whole process

Laser hair removal treatment will not produce pigment precipitation on the skin surface after hair removal like the traditional hair removal method. This is because the skin absorbs less laser during laser hair removal treatment.

The best wavelength is used for treatment: the laser can be fully and selectively absorbed by melanin, and the laser can effectively penetrate the skin to reach the position of hair follicle. The effect of laser is effectively reflected in the melanin in the hair follicle to generate heat for hair removal.

For the best hair removal effect, the laser pulse time required is related to the thickness of the hair. The thicker the hair, the longer the laser action time is required, which can obtain the ideal effect without damaging the skin.

Hair effect

Based on different parts of hair, there are different growth cycles, and the interval of each treatment is also different. If the head hair has a relatively short rest period, the interval can be as short as 1 month; The hair rest period of trunk and limbs is relatively long, so the treatment interval should be about 2 months, so you can easily enjoy the confidence brought by silky skin.

Hair can be divided into three periods: growth period, degenerative period and quiescent period. The energy emitted by the laser instrument can only destroy the hair follicles in the growth period and has no obvious effect on the hair in the degenerative and quiescent period. Only after these hair turn into the growth period can the laser work. Therefore, laser hair removal needs many times of treatment and the effect can be obvious.

If the proportion of a certain part of hair in the growth period is small, the number of treatments should be increased. On the contrary, the number of treatment can be reduced.

If the hair follicle density of a certain part is too high, the laser energy should be appropriately reduced during treatment.


The laser depilation light pulse time is adjusted for a long time to protect the epidermis and remove hair of different thickness at the same time.

The advantage of laser hair removal is that the hair removal is very thorough. The laser can penetrate into the deep layer of dermis and subcutaneous adipose tissue and act on the deep hair follicles in different parts to effectively remove the deep hair in any part of the human body.

The advantage of laser hair removal is fast.

The advantage of laser hair removal is that it will not damage the epidermis.

The advantage of laser hair removal is that the pigment precipitation after hair removal is very close to our skin.