What is the purpose of a base coat in nail applications?

The purpose of a base coat in nail applications is primarily to protect the nail. Applying a base coat creates a barrier between the natural nail and the colored polish, which helps prevent staining from darker pigments in nail colors. It can also contribute to the overall health of the nail by providing hydration and nourishment, especially if the base coat contains beneficial ingredients. Furthermore, this protective layer can improve the adherence of the polish, which enhances the longevity of the manicure by minimizing the chance of chipping or peeling. While it may have other benefits—such as aiding in the application process and improving the appearance of color—the foundational role of the base coat is indeed to safeguard the nail structure itself.