What is the primary purpose of using a nail file?

The primary purpose of using a nail file is to shape nails. This tool is designed to help achieve the desired nail length and contour by smoothing and refining the edges. A nail file can be made of various materials, including emery boards, glass, or metal, allowing for different levels of grit suited for specific purposes. Properly shaping the nails not only contributes to their aesthetic appeal but also helps prevent issues such as snagging or breaking. While nail polish application, shine enhancement, and hangnail removal are essential aspects of nail care, they do not directly pertain to the primary function of a nail file, which focuses specifically on shaping and contouring the nails.