What is the purpose of using a base coat before nail polish application?

Using a base coat before applying nail polish serves multiple crucial purposes, the most significant being to protect the natural nail and enhance the adherence of the polish. The base coat creates a smooth surface that allows the polish to bond more effectively, helping to prevent chipping and peeling. Additionally, it acts as a barrier between the nail and the polish itself, which can prevent staining or discoloration of the natural nail, particularly with darker or more pigmented polishes. This protective layer ensures that the manicure lasts longer and maintains its appearance.

While other options play a role in nail care, they do not encompass the primary function of a base coat. For example, while a top coat might help with the appearance of imperfections and gloss, it's not the main purpose of a base coat. Adding color is a function of polish itself and not a characteristic of base coats. Making removal easier pertains more to specific formulations designed for that purpose rather than the fundamental role of a base coat.