Many people have more armpit hair and produce more sweat stains and odor, and the hair follicles in the armpits are characterized by being deeper and larger. When armpit hair removal, the laser damage to the hair follicles will be greater, there will be a certain degree of folliculitis reaction. This type of folliculitis is not an infection, but only a kind of inflammatory reaction that destroys the hair follicles after normal laser treatment, which can destroy the hair follicles and make the hair no longer grow. In addition to the short-term appearance of certain folliculitis-like performance, individual patients may have itching or burning sensation, but are short-term phenomenon, can be repaired through hydration and moisturizing. In addition, after hair removal, a short period of time can appear dry skin, because the laser can be mild damage to the epidermal structure, the skin transdermal water loss increased, short-term dryness. These hazards are within the tolerable range, is a normal reaction. After normal hydration and moisturizing, the use of moisturizing repair milk, can solve the problem. However, if the equipment or treatment technology chosen for hair removal is not appropriate, the choice of parameters is not enough or the parameters are too large, the parameters are wrong, it will produce skin burns, blisters, and even make the patient infected, with the risk of scarring. It is recommended that patients choose professional places and professionals when doing hair removal in order to ensure safety and effectiveness.