Using sandpaper on your face is the first thing I've heard that is possibly more tragic than the leg buffers to remove hair (which, I thought, was as close as anyone would get to using sandpaper on their skin). I used one of the rotating hair buffers before, and not only did it give me friction burns, it also peeled off some skin (and I was using it gently), so I could never imagine using something rougher in texture than that, especially on your face... ewww