Hello, laser lip hair removal usually takes 4 times a course of treatment. Treatment should be carried out in strict accordance with the doctor's advice, and the interval should not be too long, otherwise the treatment will easily fail. Few people's hair follicles are strong. Although there are still a few hairs growing after a course of laser permanent hair removal, the hairs at this time are generally small, similar to bristles, and do not affect the appearance. If it is obvious, it will take another course of laser permanent hair removal treatment to obtain satisfactory laser permanent hair removal effect.