Maintain rubbing till you've got taken out all the dry or calloused pores and skin in the area. When you are finished, rinse off the pumice stone and use some moisturizer to the skin. For recommendations on caring for just a pumice stone so it lasts more time, scroll down! https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/