Experts said that whether laser hair removal will grow again is determined by many factors. Specifically, the effect of treatment is determined by the number of treatment, the interval of treatment, the energy during treatment, the individual differences of the body and so on.
Therefore, some hair may regenerate after hair removal, but the newborn hair will become thinner and less obvious. The effect varies from person to person. Some people grow hair after 6 months, but others will not regenerate until 2 years later. Because some hair follicles are in the resting and degenerative stage at any time, multiple treatments are needed to achieve the effect of destroying hair follicles. The removal of limb hair takes 3 to 4 times, with an interval of 1 to 2 months. Some patients with male upper lip beard sometimes need 7 ~ 8 times of treatment.
Generally speaking, the more times of treatment, the more likely it is to achieve the purpose of long-term hair removal. If the number of hair removal treatment is too small, the effect of treatment will be temporary. Therefore, the long-term hair removal effect is relative rather than absolute.
If our treatment time is too long, individual hair follicles have powerful functions. Although there are still a few hair growth after a course of very strict hair removal treatment, the hair at this time is generally small, similar to bristles, which does not affect the appearance. If it is obvious, another course of treatment should be carried out. This is also a very important reason for the failure of depilation. Of course, it will also have a great impact on the effect of laser hair removal.