I have light skin and medium hair that i tried to have removed from my back and shoulders . I paid for 6 treatments and saw just a little reduction on the regrowth. I was not satisfied with the results, so they gave me 3 more treatments for free under their guarantee.
After that I just gave up. A few months later, it was exactly the same as when I started. No miracles here, sadly. A huge waste of time and money! It will slightly reduce growth if you do it for a lifetime. That was a few years ago, and I'm still waiting for a new miracle laser.