Buy 10 Get 1 Free, This tool was specially designed to make the process of removing dry skin and calluses from the foot and heel a breeze. There is no need to pre-soak feet prior to using this tool. It was been developed to be used on dry skin. Align the tool with the blade side to the area that is to be worked on. Gently pass the tool back and forth on the area, slowly apply more pressure until the callous or dry skin is removed.