During sexual maturity, testosterone secretion increases in boys, which in turn leads to the phenomenon of long lip hair. Lip hair in boys generally do not need treatment, patients with treatment needs can be removed through depilatory cream or shaver hair removal, laser hair removal and other ways to get rid of. 1. Hair removal cream or razor hair removal: you can use depilatory or razor hair removal. Because the root of the hair is not removed, the hair follicle still has the function of regeneration. Therefore, this kind of hair removal needs to be repeated. 2. Laser hair removal: laser hair removal is based on the principle of selective photothermodynamics. The laser can pass through the surface layer of the skin to reach the root of the hair follicle and destroy the hair follicle tissue, thus making the lip hair lose regeneration ability, to achieve the purpose of lasting lip hair removal. It should be noted that male growth of lip hair is a normal phenomenon, generally without treatment. Patients with treatment needs should go to the dermatology department of a regular hospital and under the guidance of the doctor for regular treatment.