Common hair removal methods are physical hair removal, chemical hair removal and laser hair removal. Physical hair removal is simple and brutal, that is, directly pulling out the hair, hair follicles, or using wax hair removal, sticker hair removal, clip hair removal, all three of these are physical hair removal the method tends to irritate the skin easily, lasts for a short time, and the re-grown hair is often thicker and longer. Chemical hair removal is the use of hair removal creams or drugs for hair removal, this method uses the chemicals in them to dissolve the hair structure and bleach the hair to achieve a similar purpose of hair removal. Because these types of hair removal products contain various chemical ingredients, they may irritate the skin, especially people with sensitive skin should pay more attention so as not to cause uncomfortable skin reactions. In addition to the above two hair removal methods, laser hair removal is more widely used. Laser hair removal is a laser instrument that emits a certain wavelength of laser light, which penetrates the skin to reach the location of the hair follicle and acts on the root of the hair follicle so that it absorbs energy and is damaged, and the damaged root of the hair follicle causes the hair to fall off and cannot grow new hair because of tissue shrinkage. Laser hair removal requires a course of treatment, the effect is safe and effective, the maintenance time is long, for those thick and dark hair, hair removal effect will be more obvious.