Laser hair removal is currently one of the most advanced permanent hair removal methods, based on the principle of selective thermodynamics, releasing laser light, penetrating the skin surface and eventually being absorbed by the hair follicle, causing the hair follicle to be heated to produce photothermal effect, thus destroying the hair papilla of the hair follicle, so it can not only remove unwanted hair in a large area, but also effectively protect the surrounding skin, without damaging the skin and sweat glands. After the laser hair removal, the hair removal area may produce slight redness, skin sensitivity and hot or itchy feeling, use ice to reduce the pain. After hair removal, it is necessary to avoid sun exposure and apply sunscreen as prescribed by the doctor to reduce sun exposure. After the surgery, you need to pay attention to the hair removal area not to use hot water to scald and scrub hard. In addition, do not go to the unqualified beauty salon for laser hair removal operation, must choose the regular qualified medical beauty institutions or regular hospital plastic surgery for laser hair removal.