Which tool is specifically designed to clean under the free edge of nails?

The tool specifically designed to clean under the free edge of nails is the curette. A curette is a small, scoop-shaped instrument that has a sharp edge, allowing for precision in cleaning. Its design makes it efficient for removing debris, dead skin, and any buildup that can accumulate beneath the nail. This is essential for maintaining nail hygiene and preventing infections.

While there are other tools such as files and cuticle pushers that are used in nail care, they have different functions. Files are primarily used to shape nails, and cuticle pushers are designed to push back the cuticles rather than specifically clean under the nail. Scissors have their own distinct purpose, mainly for cutting, and are not suited for intricate cleaning tasks under the free edge of nails. Thus, the curette stands out as the ideal tool for this specific cleaning requirement.