Keep rubbing until eventually you've taken out all of the dry or calloused pores and skin in the region. When you're finished, rinse off the pumice stone and use some moisturizer to the skin. For recommendations on caring for your 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/