Color up your nails with the new Pedi nail stickers from the collaboration between BTS and Gelatory Factory. It comes in purple color with the BTS logo, and a glitters to add accent. You can also wear this with the Jellymix Nail Purple It Up (DISCO Edition).. What's Inside. Component: 1 BTS x Gelato Factory [DYNAMITE] Jellymix Pedi - Purple Ping Pong. How to use. Before attaching it, remove oil and water with the prep pad.. After attaching it, do not touch it with water for 2-3 hours.