The hair follicle has to be permanently damage in order to stop growing the hair out. It may be done in the first go for a few of our clients, but it may also be half damaged in some. Therefore we can say that you may or may not need a few treatments to permanently damage the growth f your hair follicle. It depends on the type of your skin, hair and its follicle. However you may get a detailed insight to cater your individual needs t the time of treatment.