What started as a small dry spot on the heel became a larger area that felt like sandpaper, after using the Ped Egg skin-grater. It became a vicious cycle; tender, raw spots on the feet or rough calluses. Have started using Flexitol heel balm to correct the problem, which wasn't that bad in the first place. Wish I had found the balm first; will be glad just to get my feet back to their original condition. Definitely do NOT recommend the Ped Egg.