White pumice is Amongst the lightest and most often observed varieties. It kinds from hugely siliceous lava and is usually used in the production of lightweight concrete. As you’re soaking the skin, also soak your pumice stone in warm water. Hardly ever use a dry pumice stone on the skin. https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/