Underarm hair removal methods are physical hair removal, chemical hair removal and laser hair removal, different hair removal methods, there will be different situations of hair removal reaction: 1, blade shaving, tweezing and other direct hair removal method: hair removal is easy to make the epidermis or hair follicle injury, can cause pore size, pigmentation, but also make the armpit hair more dense and coarse than before hair removal, and the maintenance time is short. Because the armpit is the body fold parts, often friction, if the hair removal is not kept locally clean or caused by local breakage, easy to cause infection; 2, traditional laser hair removal, ice point hair removal and other permanent hair removal method: traditional laser hair removal because of the adoption of laser treatment, some people may feel pain during the treatment process. If the laser energy used is too high or the patient’s physique is sensitive, the patient’s epidermis may appear red spots and even blisters. Since the hair follicle is close to the sebaceous gland, it may harm the sebaceous gland while removing hair and make the skin less moisturized. Scarred patients may have scarring as well as the formation of pigmentation; 3. Hair removal cream hair removal: because hair removal cream contains chemical ingredients, it can stimulate the skin and lead to skin allergy, people with sensitive skin need to use it with caution. Some patients are worried that laser hair removal will damage sweat glands and lymph, but since the location of hair follicles is not adjacent to sweat glands and lymph, it will not affect sweat glands and lymph function.