The phrase can be utilized synonymously with "volcanic ash." It really is mined from volcanic ash deposits, or it can be made by crushing rock pumice. When you’re soaking the skin, also soak your pumice stone in warm h2o. Never make use of a dry pumice stone on your skin. https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/