Which method is NOT used to soften calluses during a pedicure?

The method that is not typically used to soften calluses during a pedicure is acid-based treatments. Acid-based treatments can be effective for certain skin issues, as they may help to break down tough skin through chemical exfoliation. However, they are generally not a standard practice in the context of a basic pedicure focused on softening calluses.

In contrast, exfoliating scrubs, pumice stones, and hot towels are common techniques used by nail technicians to soften and remove callused skin. Exfoliating scrubs contain granulated particles that physically slough off dead skin, while pumice stones provide a more abrasive means of smoothing out thickened skin. Hot towels are often used to provide warmth and hydration, which can help to loosen callused skin, making it easier to manage and remove during the pedicure process. These methods align more closely with the standard practices for callus softening in pedicures.