What is the role of a base coat in nail polish application?

The role of a base coat in nail polish application is primarily to protect the natural nail and enhance the adhesion of the polish. A base coat creates a barrier between the nail surface and the colored polish, preventing potential stains and damage from pigments found in the polish. This protective layer allows the nail to maintain its health and appearance, while also providing a better surface for the color polish to adhere to, which can extend the longevity of the manicure.

Additionally, a high-quality base coat can help to fill in any ridges or imperfections on the nail surface, creating a smoother canvas for the color polish. This results in a more even application and a professional-looking finish. Therefore, using a base coat is an essential step in the nail application process for both aesthetic and protective reasons.