The tria laser system does work, but it takes a lot of time, focus, and continued dedication. I was hoping to do my entire legs, but I've only be able to do my bikini line because of two kids at home. How much time can I really have to myself? So you really need lots and lots of spare time to use this system as needed. The laser window is so tiny that you have to have utmost of focus to treat the area you want to. You can't just zone out and zap away or randomly do it. If you did, you would never know if you had treated the area you wanted to or if you had covered it completely. I've been using the laser on my bikini area for 9 months and it does work. The hair has slowly disappeared and what does come back is very thin and light. I have dark borwn hair, by the way. So I'm very happy with the results, it just takes forever for the treatments and almost a year of religious use. Just wish the window was bigger.