Which layer is applied to enhance the overall look of polished nails and add a finish?

A topcoat is specifically designed to enhance the overall look of polished nails and provide a protective finish. It creates a shiny layer on top of the color polish, which not only improves the aesthetic appeal by adding gloss but also helps to seal in the color, preventing chipping and extending the longevity of the manicure. The topcoat can also help to smooth any imperfections that may be present in the colored polish, contributing to a flawless appearance.

In contrast, a base coat serves as a foundation that is applied before the color polish; it is meant to protect the natural nail from staining and improve adhesion of the color. Cuticle oil is used to moisturize and nourish the cuticles and surrounding skin, but it does not contribute to the appearance of the nail surface itself. Gel polish, while it does provide a durable and often shiny finish, is a type of color product rather than a finishing layer applied over color.