The method of permanent removal of moustache (i.e. lip hair) for girls is laser hair removal. Lip hair is severe and may not only affect the aesthetic appearance, but may also cause psychological burden to the patient. There are various ways to remove lip hair, such as using hair removal creams, shaving knives, etc., but the maintenance time after hair removal is relatively short, and need to repeat the operation. Clinically, girls who permanently remove lip hair mostly use laser treatment, such as intense pulsed light, semiconductor hair removal. The principle of laser hair removal is to destroy the melanin in the hair follicle through photoelectric effect, so as to achieve the effect of removing hair. However, due to the different growth cycles of hair, this operation requires multiple treatments to achieve permanent hair removal. For some female candidates who want to remove lip hair by laser means, it is recommended to go to a regular hospital and under the operation of a professional doctor for treatment.