Eco-friendly and Non-toxic, this set includes (20) pieces, (1) wooden stick, and (1) mini nail file. Made with 100% gel polish, they can last for 14 days without the need for a top coat. A UV/LED lamp is required for curing (cure for 60 seconds). No glue is needed for easy application and removal on natural nails, acrylic, gel nails, and shellac. Please note that colors may vary on screen due to lighting and color resolution. The lasting power depends on the application and how you treat your hands.