Most customers begin to notice a noticeable reduction of hair growth after just 3-4 weeks, with treatments done once a week, and complete results after 12 weeks. The hair will grow back more sparse and slower after each treatment eventually turning into a permanent reduction in hair growth. To maintain hairless smooth skin after that, use the handset once every 2 to 3 months for a touch up or as needed. Results and treatment length needed may vary from person to person.According to the FDA, permanent hair removal means the “long-term, stable reduction in the number of hairs regrowing after a treatment regime.” Which is what our handset provides! But this may differ from the average interpretation of ‘permanent’. Remember even in-clinic laser is not fully permanent. In any case, if you don’t mind just one touch up every 3-4 months after the full treatment is complete, then I’d say it’s a pretty darn good deal!!