PSI Texas State Board Nail Tech Practice Exam 2025 - Free Nail Technician Practice Questions and Study Guide

The primary function of nail polish top coat is to enhance shine and prolong durability. A top coat is specifically designed to provide a protective layer over the colored nail polish, which not only gives the nails a glossy finish but also helps to seal in the color beneath it. This added layer acts as a barrier against chips, scratches, and fading, ensuring that the manicure lasts longer and maintains its vibrant appearance. By providing these benefits, the top coat enhances the overall aesthetic of the nails and boosts the wear-time of the polish, making it an essential part of any nail care routine.