What role does a top coat serve in nail care?

A top coat plays a vital role in nail care by serving two primary purposes: protecting the color of the nail polish and adding a shiny finish. The protective layer that a top coat provides helps to prevent chipping, scratching, and fading of the polish beneath. This ensures that the manicure lasts longer and retains its fresh and vibrant appearance. Additionally, the shine offered by the top coat enhances the overall aesthetic of the nails, contributing to a polished and well-groomed look.

On the other hand, the other options focus on aspects that are not the functions of a top coat. Enhancing the texture of the nail does not specifically relate to a top coat, as it is more associated with base coats or other nail treatments. Removing residue is not applicable to the function of a top coat; that task pertains to the application process of nail products prior to polishing. Lastly, a top coat does not influence nail growth; it is purely for cosmetic protection and enhancement.