Which type of e-file bit is best suited for polishing the nail surface?

The best choice for polishing the nail surface is the buffing bit. Buffing bits are specifically designed to create a smooth, shiny finish on both natural nails and enhancements. Their unique texture allows for effective polishing without causing damage to the nail surface, making them particularly suitable for achieving a high-gloss shine.

In contrast, carbide bits and diamond bits are primarily used for shaping and refining nail enhancements. These bits are more abrasive and are intended for removing product or shaping the nail, which does not lend itself to the gentler polishing required for a finished look. Sanding bands serve a similar purpose to carbide and diamond bits and are used mainly for filing, smoothing edges, and reducing bulk rather than polishing to a shine.

Therefore, the buffing bit stands out as the ideal option for providing a polished and aesthetically pleasing finish on the nail surface.