After using the coarse roller over an area for a few seconds (the instructions advise only focusing on one spot for 3-4 seconds at a time), you can literally see your feet transform as the dry skin falls off. It's disturbing, yet gratifying, and the overall process takes me less than five minutes. I've been doing it roughly every two weeks, followed by a foot mask and polish application. The result is that I no longer feeling mortified about my feet sounding and feeling like sandpaper when they touch. It's just a bonus that the routine gives me that self-care feeling I typically get at a salon, as I dedicate those few minutes to me.