What is the primary function of a top coat?

The primary function of a top coat is to seal the nail polish. A top coat provides a protective layer over colored nail polish, which helps to prevent chipping and increases the longevity of the manicure. By sealing the polish, the top coat enhances shine and creates a smooth surface, giving the nails a polished and finished look. Additionally, it can help to speed up the drying process of the nail polish beneath it. Top coats are essential for protecting the colors underneath from damage and wear, ensuring that the manicure remains vibrant and intact for an extended period.