Strong, chip-resistant nails. What it is: 2-in-1 base and top coat that strengthens your nails. How it Works: As a base coat, our panthenol formula smoothes nails' surface and helps hold on to color. As a top coat, nylon and pro-vitamin B5 shields nails with a hard, chip-resistant finish. The Results: Stronger, flawless manicures that last. Salon tested. sallyhansen.com. America's No. 1 nail brand. Made in USA.