Every year in the summer time, many people need to remove the sweat hair on the arms or legs, but always repeat always feel a very troublesome thing, but also worry about the permanent hair removal by way of laser, there will be sequelae. 1, through the laser hair removal method will form a certain damage to the hair follicle tissue, thus causing the sweat hair to fall off, or even no longer grow, usually need to be repeated several times to achieve good results, and in the early stage is likely to appear pigmentation phenomenon, of course, may also cause some damage to the hair follicle. 2, the use of this method is generally not too obvious sequelae, but in the process of hair removal, there are many patients will obviously feel some slight pain, but these can be within tolerance, and in the treatment, the surface of the skin will also have some relatively minor redness and swelling phenomenon, usually after a few days can subside on their own. There are many ways to remove hair, but compared to laser hair removal, laser hair removal requires less pain, many people do not feel too obvious when laser hair removal, although it can eliminate the body hair, but for the skin surface is basically not too much damage.