This duo pack contains Infinite Shine Primer and Top Coat with new Prostay technology. Use them with one of Infinite Shine's shades for up to 11 days* of gel-like wear and shine. Together, the ProStay Primer and Gloss provide: Optimum sticking power, less chipping, 60% higher gloss retention and 25% higher shine. Includes: Infinite Shine Top Coat, 15ml Infinite Shine Primer Base Coat, 15ml