For a typical treatment, you can expect between 4 and 6 sessions scheduled about a month apart. Maybe more depending on the area and the equipment being used. It takes that long because human hair grows in phases. There is the growth phase, the rest phase, and the falling-out phase.
Meanwhile, laser hair removal works by allowing the dark pigment of the hair to absolve heat energy, which sends it down to the hair follicle beneath the skin and disables it, rendering that follicle unable to produce hair ever again. So if the hair of a particular follicle is at a phase that stops the laser from hitting it, that hair won’t be affected by the laser treatment. Hence the need for several sessions
As for each session, their length will vary depending on the equipment being used. A full male back may take upwards of an hour per session in some clinics, but you can also find hair removal in Kent that does the same in around ten minutes.
