US POLYMERS › HPP 8546 (E 560) HPP 8546 (E 560) $0.00 US POLYMERS HPP 8546 (E 560) is a Nitrocellulose solution and is designed to enhance properties for nail polish applications. Quantity: Add To Cart Added! US POLYMERS HPP 8546 (E 560) is a Nitrocellulose solution and is designed to enhance properties for nail polish applications.