A nail file is a small tool used to shape and smooth the edges of fingernails and toenails. It typically has a flat surface made of abrasive material, such as emery or glass, which helps to gently file down rough or uneven nail edges. Nail files come in various shapes and sizes, making them suitable for different nail types and personal preferences. Using a nail file is a simple process. You hold the file at a slight angle and move it back and forth along the edge of the nail. This helps to prevent snags and breakage, promoting healthier nails. Regular use of a nail file can enhance the appearance of nails and is often part of a manicure routine.