The effect of 808nm laser hair removal is obvious. The main principle is that the laser penetrates the surface layer of the skin, directly acts on the hair follicle, is absorbed by the melanin in the hair follicle, effectively destroys the hair follicle, so that the hair can not be regrown, achieves the effect of complete hair removal, and does not cause damage to the surrounding normal tissue. . Laser hair removal is currently the most effective method of hair removal, but in the process of laser hair removal, it is only possible to have effect on the hair when the hair is in the growth phase. Because of the physiological characteristics of hair, it is necessary to treat it multiple times.
Hair is divided into three periods
Hair growth has a growth phase, a degenerative phase, and a rest period. The maternal cells of the hair during the growth period divide rapidly, and the melanin is the most in this period, so it is sensitive to laser light. Therefore, the laser hair removal is mainly completed during this period, and it is also the most effective; in the degenerative period, the hair matrix is degenerated, the dermal papilla atrophy; the rest period hair follicle Separated from the dermal papilla, the hair is detached, it is not sensitive to the laser during the period of retreat and rest, and it does not destroy the hair follicle.
1. Because the laser has no obvious effect on the hair in the period of retreat and rest, the laser can only work after the hair is transferred into the growth period, so the laser hair removal requires multiple treatments, and the effect can be obvious.
2. If the proportion of hair in a certain part of the growing season is small, the number of treatments will increase. On the contrary, the number of treatments can be reduced.
3, based on different parts of the hair have different growth cycles, each treatment interval is also different. If the head hair has a relatively short rest period, the interval can be as short as one month; the trunk and the limbs have a relatively long resting period, so the treatment interval is about 2 months.
4, the depth of the hair follicle also varies from site to site, such as deeper depth must use longer wavelength laser treatment, and if the depth is shallower, shorter wavelength laser treatment can be used.
5. If the density of hair follicles in a certain part is too high, the laser energy should be appropriately reduced during treatment.
In general, 60%-70% of hair can be removed 3 times; the remaining hair after 5 treatments is generally small and clear.
During the laser hair removal treatment, it is not required to scrape or pluck the hair by itself, because the scraping and pulling will stimulate the growth of the hair and affect the effect. The treatment interval is strictly limited to about 1 month, depending on the location, slightly different.
Laser hair removal is a persistent beauty project.