How to use Nail Primer - Guide Preparation: Start by cleaning your hands and nails to remove dirt and impurities. Remove any old nail polish. Push Cuticles: Gently push cuticles back with a cuticle stick. File the nail surface: Use a nail file to gently file the natural nail to remove the natural shine of the nail. This helps the Gel adhere better. Nail Primer: Apply Primer to your natural nail and let it air dry for about 20 seconds.