This product is AMAZING. A few weeks ago, I used it on my right leg, foot, & big toe. I wanted to compare it to my left leg after a few days. Well, I got busy, & I shave every day & didn’t think much about it. I finally decided to let my hair grow for 2 days & the difference is crazy! After just one use, there is SO much less hair on my right leg. The pictures don’t do it justice, but the hair on my right leg is very patchy now, while my left leg still has growth all over. I also included pictures of my big toes. You can see that hair is growing on my left toe, & I have NO HAIR growing on my right toe! After one use! I am so excited about this now & ready to use it all over my body! Haha.I do have the optimal skin & hair color for this device. My skin is light & my hair is very dark brown or black.I would definitely recommend this device to anyone looking for a cheap alternative to professional laser hair removal!