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

The purpose of a base coat in nail application is primarily to protect the natural nail and improve polish adhesion. It acts as a barrier between the nail and the colored polish, ensuring that the pigments from the polish do not stain the natural nail. By enhancing adhesion, the base coat allows the colored polish to adhere better, which helps to extend the longevity of the manicure. Additionally, a base coat can provide a smooth surface, improving the overall application of the nail polish and leading to a more even and professional-looking finish.

While preventing staining and providing a glossy finish are beneficial aspects of using various nail products, these are not the primary functions of a base coat. Similarly, a base coat does not serve the purpose of adding color, as it is typically a clear or lightly tinted polish designed to create the ideal foundation for colored nail polish application.