Laser hair removal requires a series of treatments. As long as you are treated with the right laser, correct settings, and undergo the proper number of treatments, laser hair removal can be permanent. In some circumstances, a touch-up session may be required every few years. There are some underlying medical conditions such as polycystic ovarian syndrome that decrease the efficacy of laser hair removal. At Renew, we use the Candela Gentlelase Max which is highly effective at removing hair safely in all skin types.