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

The primary purpose of using a base coat in nail polish application is to protect the natural nail. A base coat acts as a barrier between the nail surface and the colored polish, preventing the pigments in the color polish from staining the nails. Moreover, it can help to strengthen the nails and improve adhesion, allowing the color polish to adhere better and extend its wear. Additionally, the base coat can create a smooth surface, which improves the overall look and longevity of the manicure. This fundamental role in protecting the nails contributes significantly to nail health and ensures that the polish looks fresh and vibrant for a longer period.