Laser hair removal and electro-acupuncture hair removal belong to this kind of treatment. As far as laser hair removal is concerned, the effect of treatment, the number of treatments, the interval of treatment, the energy during treatment and the individual differences of the body are all determined. Generally speaking, the more times of treatment, the more likely it is to achieve the goal of permanent hair removal. If the number of treatments is too small, the effect of treatment will be temporary. Therefore, the effect of long-term hair removal is relative rather than absolute, and we can't walk into a dead end. Generally speaking, to achieve the purpose of hair removal, it is necessary to have 6 courses of treatment, and the treatment should be carried out in strict accordance with the interval told by the doctor. The treatment time should not be too long apart, otherwise the treatment will fail easily. Of course, there are also some people whose hair follicles are powerful. Although there are still a few hairs growing after a very strict hair removal course, the hairs at this time are generally small, similar to bristles, and do not affect the appearance. If it is obvious, it should be treated for another course.