Calluses are built to protect your feet from friction. Certain skin types callus more easily and quickly — Mediterranean skin types and women of color. (I have found that African-American women can easily build a callus that is 1/2- inch deep in just two months!)
If they are deep and painful, the calluses should first be shaved by a podiatrist. Once this has been pared down, daily use of a uric acid cream (Carmol 20 over-the-counter or Carmol 40 in prescription strength) or lactic acid preparation (AmLactin over-the- counter or Lac-Hydrin by prescription) in the morning and at night will remove skin and help prevent build-up. Sometimes in a very high arched foot, an arch support with a soft extension can be custom-fabricated to your foot. They are expensive ($400 in my office), but a necessity for certain people. If it is not prohibited in your area, I see no problem with an experienced, competent pedicurist using a credo blade to reduce built-up callus. A fresh blade should be used each time. Check with your state board for local regulations. — Dr. Johanna Youner