Using these nail files is a breeze. First, pick the side you need - use the 100 grit side for faster shaping or when you need to remove a lot of nail material, and the 180 grit side for a smoother finish. Hold the file at a slight angle and gently move it back and forth across your nail. Remember to file in one direction to avoid splitting the nails. As for maintenance, keep them dry and clean. You can wipe them with a clean cloth if they get dirty. Also, store them in a dry place away from heat and moisture. If you notice the grit starting to wear out, it's time to replace the file.
