Corns and calluses are a build-up of hard, thick areas of skin that develop over time from friction, rubbing, or pressure on the skin. You can remove corns and calluses at home, but it can be a slow process.  Soak your feet in warm water for about 10 minutes. Use a wet pumice stone or emery board to gently scrape off dead tissue. Scrub in one direction and take care to not remove too much skin in one sitting. Then apply a moisturizing cream or lotion to your feet.  Repeat two or three times a week until your feet are smooth. Keep in mind that it takes time for corns and calluses to form, and it will also take time to work them off.