What is a Foot file primarily used for?

A foot file is primarily designed to address the specific needs of the foot's skin, particularly in areas prone to dryness and calluses. The primary function of a foot file is to effectively remove dry, flaky skin and smooth out calluses. This helps in maintaining not only the appearance of the feet but also their health by preventing issues that can arise from overly thickened skin.

While other tools and practices exist for toenail care, such as filing and shaping, trimming, or cleaning under the toenail, these functions do not align with the intended use of a foot file. It is specifically crafted for exfoliating and refining the skin's surface, which is crucial for a polished and well-groomed look. Thus, focusing on the characteristics of foot files clarifies that their main application centers around foot care and callus management.