Premier solutions Pumice Stone smooths the soles of your feet and is gentle enough for daily use. Its large, oval surface is easy to grasp, and using it in a light, buffing motion, can help prevent dry skin build-up. Keep out of reach of children. Do not use if the skin is inflamed or broken. Directions: Briefly soak skin in warm water with soap. Wet pumice stone and rub rough areas in a circular motion, applying light pressure. Rinse pumice stone after use to remove residue. A white powdery substance may appear on the stone due to water conditions in your area. This will not affect the stone and may be removed by rinsing in warm water.