Keep rubbing until eventually you've got removed most of the dry or calloused skin in the region. When you are concluded, rinse from the pumice stone and use some moisturizer to the skin. For recommendations on caring to get a 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/