What tool is used to clean under the nails in nail care?

The tool specifically used to clean under the nails in nail care is the nail scraper. It is designed to effectively remove dirt, debris, and dead skin that can accumulate beneath the nail tip. This helps maintain hygiene and prevent potential infections, which is especially important in nail care practices.

While other tools like the nail file, nail clipper, and nail buffer serve different purposes, they do not target the under-nail area. The nail file is primarily for shaping and smoothing the edges of nails, the nail clipper is used for trimming nails to the desired length, and the nail buffer is meant for polishing and shining the nail surface. Therefore, the nail scraper is the most appropriate choice for cleaning under the nails.