What is the function of a base coat in nail care?

A base coat serves a crucial role in nail care by protecting the natural nails and creating a smooth surface for applying colored polish. This protective layer acts as a barrier, preventing staining of the nails that can occur from pigmented polishes. Additionally, the base coat often helps to adhere the polish more effectively, enhancing its longevity and minimizing the chances of chipping.

While adding color to the nails is a function more appropriately associated with colored polishes, and providing a glossy finish is typically a characteristic of top coats, the base coat is specifically formulated to prepare and protect the nail surface. It can also sometimes contain ingredients that help strengthen weak nails, but its primary function remains centered on preparing the nail for color application and protecting the underlying surface.