How are corns and calluses treated in alternative medicine?

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. Corns should peel away after about 10 days of the treatment.

Vitamin E or A
Before bed, use a needle to prick a vitamin E or A capsule, then rub the oil into your corn. After letting the oil sit for a few minutes, put on a white cotton sock and head to bed. Repeat nightly until the corn is gone.