Calluses and corns are caused by repeated pressure or friction on an area of skin. The pressure causes the skin to die and form a hard, protective surface. A soft corn is formed in the same way, except that when sweat is trapped where the corn develops, the hard core softens. This typically occurs between toes. Other risk factors for developing a corn or callus include foot deformities and wearing shoes or sandals without socks, which leads to friction on the feet. Rubbing or pressure can cause either soft corns or plantar calluses.
Have a shoe shop stretch your shoes at any point that rubs or pinches. Use protective coverings. Wear felt pads, nonmedicated corn pads or bandages over areas that rub against your footwear. You can also try toe separators or some lamb's wool between your toes.
Castor Oil and Apple Cider Vinegar. Fill a basin with hot, soapy water, then add a cup of apple cider vinegar before soaking your feet in the water for at least 15 minutes.Calluses should be softened enough to be filed with a pumice stone. For corns, dab some castor oil on after soaking your feet.