What is the purpose of a nail buffer?

The purpose of a nail buffer is to smooth the surface of the nail and enhance its shine. Buffers are designed with fine, soft materials that help to gently polish the nail surface, removing minor imperfections and leaving a smooth, reflective finish. This process can make the nails look healthier and more aesthetically pleasing without the need for additional products. The enhanced shine also contributes to a more polished appearance, which is often desired in manicures and nail care routines.

In contrast, removing nail polish or cutting the nails involves different tools and techniques that do not focus on the smoothing and shining aspects of nail care. Strengthening nails typically requires the use of specific products or treatments aimed at improving nail integrity, rather than merely buffing the surface. Therefore, the primary role of a nail buffer is effectively captured by the focus on smoothing and shining the nails, making this the correct answer.