What is one of the benefits of using a base coat before nail polish?

Using a base coat before applying nail polish serves several important functions, one of which is to prevent staining of the nails. When colored nail polishes are applied directly onto the natural nail without a protective layer, pigments can seep into the nail and cause discoloration, resulting in yellow or stained nails over time.

A base coat acts as a barrier between the nail and the color, ensuring that any strong dyes in the polish do not adhere directly to the nail surface. This protective layer helps maintain the natural appearance of the nails, allowing them to stay healthy and free from the potentially harmful effects of prolonged exposure to pigmented polishes.

While a base coat can have other benefits, such as improving polish adhesion or providing a smooth surface for application, its role in preventing nail staining is particularly significant for maintaining the aesthetics and health of the nails in the long run.