What is the primary function of a top coat?

The primary function of a top coat is to provide a protective layer. A top coat is applied over nail polish to shield the underlying color from chips, scratches, and wear, extending the wear time of the manicure. Additionally, it adds a layer of shine, enhancing the overall appearance of the nails.

A top coat serves as a barrier against environmental factors, such as moisture and chemicals that could damage the nail polish. By sealing the color beneath it, the top coat helps maintain the integrity and vibrancy of the polish for a longer period. In some formulations, top coats can also help prevent staining of the natural nail. This protective quality is essential for maintaining the durability and aesthetic of the manicure, making the top coat an indispensable step in the nail care process.