The primary use of a nail file is to shape and smooth the edges of the nails. Nail files come in various materials, including emery boards, glass, and metal, each designed to help achieve specific shapes and finishes for the nails. When a nail file is used correctly, it helps to remove any roughness, preventing snagging or breaking, and allows for a clean, polished appearance.
By focusing on shaping the nails, a nail file helps prepare them for further manicuring techniques, such as polishing or applying nail enhancements. This foundational step is crucial for both the aesthetic quality of a manicure as well as the overall health of the nails, ensuring they are maintained in good condition.