The 7 Stars nail stickers will give you the art vibe of being funky, it has a reflective glitter that will make you nails look dazzling.. What's Inside. Component: 1 BTS x Gelato Factory Jellymix Nail Purple It Up (DISCO Edition). How to use. Before attaching it, make sure to remove oil and water with the prep pad.. After attaching it, do not touch it with water for 2-3 hours.