Views: 6 Author: Site Editor Publish Time: 2022-09-23 Origin: Site
Laser hair removal treatment is based on the theory of selective photothermal action. Hair follicles and hair shafts are rich in melanin, and lasers can precisely and selectively target melanin for hair removal. After the melanin absorbs the energy of the laser, the temperature rises sharply, which causes the destruction of the surrounding hair follicle tissue and removes the hair. In short: there is melanin in the hair follicle → melanin shrinks after absorbing light → hair falls off naturally. When the hair follicles are destroyed, natural hair does not grow.
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Hair growth is divided into anagen, catagen and telogen. During the growth phase, the hair matrix cells divide rapidly, with the most melanin in this period, so it is extremely sensitive to laser light. In the degenerative phase, the hair matrix degenerates and the dermal papilla atrophy. In the telogen phase, the hair follicles are separated from the dermal papilla, and the hair falls off.
The relationship between the hair growth cycle and laser hair removal treatment:
①Because the laser has no obvious effect on the hair in the degenerative and telogen phase, the laser can only work after these hairs are transferred to the growth phase, so laser hair removal requires multiple treatments to achieve obvious effects.
②If the proportion of hair in a certain part is small, the number of treatments should be increased. Conversely, the number of treatments can be reduced.
③Because different parts of the hair have different growth cycles, the interval between each treatment is also different. For example, the hair on the head has a relatively short resting period, so the interval can be as short as 1 month; the resting period of the hair on the trunk and limbs is relatively long, so the treatment interval is about 1 to 2 months.
Since sweat glands and hair follicles are two independent tissues, and the wavelengths of the two absorb laser light are different, laser hair removal will not affect sweating.
According to the theory of selective photothermal action, as long as the appropriate wavelength, pulse width and energy density are selected, the laser can precisely destroy the hair follicle without causing damage to the adjacent tissue. Studies have shown that the histological structure of sweat glands is not damaged after laser hair removal, and the clinical observation of patients' sweat gland function is basically unaffected. Using advanced laser hair removal equipment, not only will not damage the skin, but also shrink pores, making the skin smoother and more delicate.
Best permanent laser hair removal machine is a very safe and effective method of hair removal. It is highly targeted and has no side effects on the body. The skin of the human body is a relatively light-transmitting structure. In front of a powerful laser, the skin is simply a piece of transparent cellophane. Therefore, the laser can penetrate the skin and reach the hair follicle very smoothly. Because the hair follicle has a lot of melanin, it can be preferentially absorbed. A large amount of laser energy is finally converted into heat energy, which increases the temperature of the hair follicle and achieves the purpose of destroying the function of the hair follicle. In this process, because the skin does not absorb laser energy relatively, or absorbs a small amount of laser energy, the skin itself will not have any damage.
Mild pain, but the level of pain varies from person to person. The degree of pain is mainly determined according to the skin color of the individual and the hardness and thickness of the hair. Generally, the darker the skin color, the thicker the hair, and the stronger the tingling pain, but it is still within the tolerable range; the skin color is white and the hair is thinner, the less pain is felt. If you are sensitive to pain, you need to apply anesthesia before treatment, please communicate with the therapist first.
Yes, three decades of clinical proof, laser hair removal is the only effective permanent hair removal. The laser penetrates the surface of the skin and reaches the hair follicle at the root of the hair, directly destroying the hair follicle, thereby making the hair lose its ability to regenerate. Since the process of endothermic necrosis of hair follicles is irreversible, laser hair removal can achieve permanent hair removal. Laser hair removal is currently the safest, fastest and most durable hair removal technology.
There are three periods of hair growth: growth phase, regression phase and stationary phase. Only when the hair follicle is in the growth phase will there be a large number of pigment particles in the hair follicle and can absorb a large amount of laser energy, so laser hair removal treatment cannot be successful at one time, usually It takes several consecutive laser exposures to achieve the desired effect of permanent hair removal. Generally, after 3-6 treatments, the hair will not grow back, of course, very few people need more than 7 treatments.
It depends on the treatment area. The hair removal time is about 2 minutes for lip hair, about 5 minutes for armpit hair, about 20 minutes for calves, and about 15 minutes for arms.
Laser hair removal is a relatively advanced permanent hair removal method, and no side effects have been found so far.
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