I have light skin with dark hair, which is supposedly ideal for laser hair removal to really work. That said, I gave it longer than the 90 day window because the hair on my legs did seem to be lessening and coming in slower, and am still shaving. I started in early March and am still going in June. I am super disappointed. I am bummed I am outside of the return window (I didn’t realize there was a maximum amount of time, it seems like something that you should be able to give more time to without getting penalized). It is also much more time consuming as you need to pass each area three times, so if you want to do legs, bikini, and under arms, I don’t see how it is much under an hour? Their times are way off.