Make Your Feet Beautiful with the Allura Callus Shaver. No more painful, dry, and cracked calluses. With Allura Callus Shaver, you can easily have the beautiful feet you've always dreamed of. These high quality callus shavers are great for removing the even the most stubborn calluses quickly and effortlessly. How to Use: (1) Clean and soak feet in warm water for 15-30 minutes to prep and soften hard skin. After soaking, wipe both feet dry with a towel. (2) Feel for rough spots on your feet (usually the ball of the foot, heel, top of your toes, and foot sides). Once you have determined which areas to work on, gently glide shaver across hard skin to remove thin, dead layers. (3) To smooth skin using rasp, install the rasp on the handle. Once rasp tool is locked into place, glide the rasp up and down to smooth the skin.