What is the main purpose of applying a base coat before nail polish?

The primary purpose of applying a base coat before nail polish is to create a barrier between the natural nail and the colored polish. This barrier serves several important functions. First, it helps to prevent staining of the nails, particularly when using darker polishes that can leave a discoloration on the nail surface. Additionally, the base coat can provide a smoother surface for the polish to adhere to, which can improve the overall application and longevity of the manicure.

A base coat is often formulated to promote adhesion of the nail polish, which helps in preventing chipping and peeling. This protective layer can also smooth out minor imperfections on the nail surface, ensuring a more polished final appearance. Overall, the use of a base coat is a foundational step in achieving a beautiful and lasting manicure, making it an essential product in nail care routines.