[30] Pumice in powdered variety was an ingredient in toothpastes in historical Rome.[31] Nail treatment was essential in ancient China; nails have been kept groomed with pumice stones, and pumice stones were also employed to remove calluses. Then, rub a dry pumice stone more than the pilling in circular motions. https://bookmarklayer.com/story19444453/facts-about-pumice-stone-revealed