[30] Pumice in powdered sort was an ingredient in toothpastes in historic Rome.[31] Nail treatment was vital in historical China; nails were retained groomed with pumice stones, and pumice stones were also used to remove calluses. This hurry of gas within the vent shreds the magma and blows it out https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/