I replaced my old hair removal device because even though the career seemed promising, the wax roller couldn't move comfortably, resulting in pain every time I applied the wax to my skin. Also, the hair didn't come out well. With my new device, I am completely satisfied. It heats the wax well and the roller moves smoothly, so I don't feel any pain or burning sensation at all. With one motion, the hair comes out immediately. I highly recommend it without hesitation!