Since hair grows in cycles, a series of treatments are performed every 5-6 weeks. The number of treatments required will vary for each person depending on skin colour, hair colour, coarseness of hair & hormones. You may find that one treatment has very impressive results, but several treatments are usually needed for best results. Most people will require between 6-8 treatments as the laser hair removal process is only effective on hair during the early growing cycle. Repeat treatments are needed to destroy these follicles when they re-enter the early growth phase.