Every beautiful lady wants to have a smooth and clean skin, but due to heredity, abnormal hormone levels and some medications can lead to abnormal hair growth. Excess hair affects the aesthetic appearance and can even bring mental pain, so getting rid of unwanted hair is not only an important part of people’s pursuit of physical beauty, but also an effective means of lifting psychological barriers. 1.What are the methods of hair removal? In the past, the common methods of hair removal include shaving method, waxing method, tweezing method, mechanical hair removal, chemical agent hair removal and so on. Although these methods are effective, they are only temporary and the common disadvantage is that the hair regenerates quickly. Electrolysis method is to use an electric needle inserted into the hair follicle, the hair follicle will be destroyed, although it can effectively prevent hair regeneration, but the operation is cumbersome, time-consuming, the treatment process is very painful, on the face and other smooth parts of the skin there is a possibility of scarring, especially in the back or legs need to be removed when the method is almost impossible to use. 2.What are the advantages of laser hair removal? What is its principle? In recent years, with the development of laser technology and clinical application, laser hair removal has become the main means of removing unwanted hair with its convenience, safety and efficiency. The principle of laser hair removal is based on the theory of selective photothermolysis, so that a specific wavelength of laser light penetrates the epidermis (without damaging the epidermis), the hair follicles, the melanin in the trunk of the hair selectively absorbs the laser energy, thus making the hair follicles coagulate and necrotic by heat, and the hairs no longer grow. After repeated clinical application, the efficacy is reliable, has passed the U.S. FDA certification. 3.Is laser hair removal safe? Will it affect sweating? Laser emission only targets the melanin in the hair follicle, which is highly targeted. Hair removal will not affect sweating, because sweating mainly depends on small sweat glands, and the opening of small sweat glands is not in the hair follicle. Laser hair removal has almost no effect on the skin and is very safe. 4.How many times do I need to do hair removal? Generally, 3~6 times are needed. This is because hairs go through three phases: anagen, regression and resting phase. Only the hairs in the anagen phase have a role in removing. 5.What should I pay attention to before laser hair removal? Hair removal parts should pay attention to sunscreen one week before treatment, and hair removal parts should not be plucked, waxed or depilatory creams and other methods of hair removal before treatment. 6.Will the hair grow back after laser hair removal? After laser hair removal, most of the hairs will fall off, or the hairs will become thinner and lighter in color. In a few patients, the hair will partially regrow. White and very fine gray hairs are not good for hair removal.