Laser depilation is harmful to the skin. Will laser depilation harm the skin? So we should first understand the principle of laser depilation. At present, laser depilation is most used for depilation, and it is not harmful to the skin.
Is laser hair removal safe
Laser hair removal is a very safe hair removal method. It is highly professional, has no side effects on the human body, has little impact on the skin, and even has the effects of whitening and moisturizing.
Harmfulness of laser hair removal to skin
Human skin is a relatively transparent structure. In front of powerful laser, the skin is just a piece of transparent cellophane. Therefore, the laser can pass through the skin very smoothly and reach the hair follicle. Because there is a lot of melanin in the hair follicle, it can preferentially absorb a large amount of laser energy and finally convert it into heat energy, so as to increase the temperature of the hair follicle and destroy the function of the hair follicle.
Why does laser peeling need a certain period? First, most hair follicles are bound together in groups of three and open in the same pore. A hair in the pore is the hair growing from one of the three hair follicles in the group below it, so one treatment can only destroy one hair follicle in a group; Second, hair growth should go through the growth period, degenerative period and resting period. Laser hair removal in the growth period is 75% effective, the degenerative period is 25%, and the resting period is almost invalid.
Because the growth cycle of different parts is different, and the interval time is also different, generally speaking, the head and face function for 4-6 weeks and the trunk function for 8 weeks. The last few times can be appropriately extended. What happens if the time is shorter than this? The hair follicles are not fully recovered, the body is small, it is easy to escape the killing of light, and the depilation efficiency is reduced.
Will depilation affect perspiration
Perspiration mainly depends on small sweat glands, and the opening of small sweat glands is not in hair follicles. At the same time, laser hair removal is to sweep hair follicles and will not hurt sweat glands. Therefore, it will not affect human metabolism and perspiration.
The principle of laser hair removal is the principle of selective Thermodynamics: that is, the selected wavelength only acts on melanin, not on normal skin tissue; The selected pulse width only acts on the melanin in the hair follicle, not on the melanin in the basal layer of the skin.
Laser hair removal permanent
The current laser or strong light therapeutic instrument has the function of permanent hair removal, so many people will misunderstand that there is no hair growth after treatment. In fact, this permanence is by no means permanent in the real sense. The FDA’s understanding of permanent hair removal is that hair does not grow during a hair growth cycle after laser or strong light treatment. Generally speaking, after many times of laser or strong light treatment, the hair clearance rate can reach 90%. Of course, its curative effect is affected by many factors.
The principle of laser hair removal is mainly to destroy hair follicles, which will not cause great harm to our skin. Compared with traditional hair removal, laser hair removal can still be used without any harm.