I've been using the Gen.2 ipl for 6 or 7 weeks (legs, armpits and bikini) and I can see results. (I have unsensitive light skin and dark hair, by the way) The hair growth have been signitificantly slowed down. Instead of shaving my armpits every 2 days or so, I only have to do it before the ipl treatment, once a week! I'm looking forward to more results in the next weeks. Also, I use the device at the level 5 and feel no pain at all, only a warm feeling. Very happy user so far!