Sally Hansen's Double Duty™ Base & Top Coat is a versatile 2-in-1 nail treatment designed to simplify your manicure while delivering robust protection. As a base coat, the Panthenol-infused formula smooths the nail surface to create an ideal canvas and improve color adhesion. When applied as a top coat, it utilizes Nylon and Pro-Vitamin B5 to form a hard, shiny, and chip-resistant shield over your polish. This dual-action product strengthens nails, extends the life of your manicure, and ensures a flawless, long-lasting finish.