What is the function of base coat in nail polish application?

The function of a base coat in nail polish application is primarily to act as an adhesive. Base coats are formulated to bond the nail polish to the nail plate, which helps the polish adhere better and last longer. This adhesive property minimizes the risk of chipping and peeling, leading to a more durable manicure.

Additionally, base coats often contain ingredients that may also condition and protect the nails, preventing staining from colored polishes and providing a smooth surface for the application of the colored polish. However, their key role is indeed to create a strong foundation that enhances the overall performance of the nail polish applied on top of it.