The term 'permanent hair reduction' is more accurate than 'permanent hair removal.' What happens is that the laser damages the hair follicles to the point where they either stop producing hair entirely or produce much finer, lighter hair that's barely noticeable. Most guys find that after completing their initial treatment plan, they might see some minor regrowth over time, especially in areas with hormonal influence like the face and chest. Typically you'd need a touch-up session maybe once or twice a year to maintain completely smooth results. Some people don't need any touch-ups at all after their initial sessions. It really varies based on your hormones, genetics, and how well your hair follicles responded to the initial treatments. The good news is that even if you do get some regrowth, it's usually much lighter and sparser than before.