There are more reasons for boys to have a lot of facial hair, including idiopathic hirsutism, insulin resistance and medicated hirsutism, which need to be eliminated by choosing medication or physical therapy according to the different causes. It can be eliminated permanently by laser hair removal, OPT photon hair removal, E light hair removal, etc. However, it usually requires multiple treatments to achieve permanent hair removal. 1. Idiopathic hirsutism: also known as familial or somatic hirsutism, with obvious family tendency. Hairiness begins at puberty and continues to develop for decades afterward. Hair removal can be achieved through laser hair removal, which acts on the hair follicle at the root of the hair, destroying the hair follicle tissue and losing the regeneration ability. 2. Insulin resistance: high level of insulin in the body leads to hirsutism with acanthosis nigricans, insulin resistant drugs such as metformin can be taken to reduce insulin resistance, and obese patients need to lose weight. 3. drug hirsutism: although rare, but the following drugs can cause hirsutism, such as testosterone, danazol, glucocorticoids, etc., need to be in the disease healed, under the guidance of the doctor to stop eliminating the drug. Boys have a lot of hair on the face of the causes are more, it is recommended that the need to remove the hair of the boys to the regular hospital, under the guidance of the doctor to choose the appropriate treatment program, in order to achieve the desired results.