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

The purpose of a base coat in nail polish application is to protect the natural nail and improve the adhesion of the polish. The base coat acts as a barrier between the nail and the colored polish, which helps prevent staining and damage to the nail surface. This protective layer ensures that the polish adheres better, reducing the likelihood of chipping and prolonging the wear of the manicure. Additionally, the base coat provides a smoother surface for the colored polish, which can enhance the overall appearance and effectiveness of the manicure. By fulfilling these functions, it contributes significantly to maintaining healthy nails and achieving a beautiful finish.