What is the purpose of a foot file?

The purpose of a foot file is to smooth and reduce thick calluses. Calluses often develop on the soles of the feet due to friction and pressure, and they can be uncomfortable or unsightly. A foot file is specifically designed with a rough surface that effectively sloughs off dead skin, making it an essential tool in pedicure practices to maintain healthy feet.

Using a foot file helps to reveal softer skin underneath while preventing the buildup of calluses, which can be beneficial for overall foot health and comfort. Regular use of a foot file can enhance the appearance of the feet and improve the effectiveness of moisturizing treatments applied afterward. The other options do not accurately reflect the primary function of a foot file, as it is not designed for grinding products, applying nail polish, or cutting toenails.