Most pumice erupts from magmas which have been highly billed with gas and possess a rhyolitic composition. Not often, pumice can erupt from gasoline-billed magmas of basaltic or andesitic composition. Rub the abrasive aspect on the pumice stone more than the skin in a very circular movement with gentle tension. https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/