Continue to keep rubbing until you've got taken out all of the dry or calloused skin in the area. When you're finished, rinse off the pumice stone and use some moisturizer to your skin. For tips about caring for the pumice stone so it lasts for a longer period, scroll https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/