What grit file should be used to prevent damage to natural nails?

Using a file with a grit of 240 is ideal for preventing damage to natural nails. This grit is fine enough to smooth edges and remove light imperfections without being too abrasive. A finer grit like 240 helps maintain the health and integrity of the natural nail by minimizing the risk of splitting, tearing, or excessive filing that could weaken the nail structure.

Files with a lower grit number, such as 120, are coarser and more aggressive, which can easily lead to damage when used on natural nails. Similarly, while a grit of 180 can serve well for shaping artificial nails or acrylic overlays, it is still more abrasive than necessary for delicate natural nails. The 320 grit is even finer and can be useful for polishing but may not be as effective for the initial filing needed to shape the nails properly. Thus, the 240 grit stands out as the most suitable choice for safe and effective nail care.