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

The purpose of a base coat in nail application is primarily to improve color adhesion. This coat is applied directly onto the natural nail before any colored polish is added. It provides a smooth surface that helps the nail polish stick better, preventing chipping and ensuring a longer-lasting manicure. Additionally, the base coat can help to prevent the natural nails from staining due to pigmented nail polishes.

While sealing the nail, creating a glossy finish, and hardening the nail are important aspects of nail care, they do not encompass the primary function of a base coat. A base coat is specifically formulated to enhance the bond between the nail and the polish applied subsequently, thus ensuring that the color adheres properly and maintains its vibrancy and durability throughout wear.