Junior high school girls can use laser hair removal, but the armpits, perineum and other parts of the hair generally belong to the secondary sexual characteristics, junior high school students who are not mature do not recommend laser hair removal. Laser hair removal is usually based on the principle of photothermal dynamics, destroying the hair follicle tissue, so that the hair loses the ability to regenerate, is a safer and faster hair removal technology. Most lasers only work on hair follicles during the anagen phase, and multiple treatments are usually required to achieve permanent hair removal. But laser hair removal will also have local burns, infection, pigmentation risk; and junior high school girls are in the developmental stage, the secondary sexual characteristics are not stable, not recommended for the unsteady crowd premature laser hair removal treatment. It is recommended that you go to a regular medical institution and choose a hair removal method that suits your needs to avoid adverse consequences.