Cute Pedi nail sticker from BTS and Gelato Factory collaboration comes in pastel colors with donut designs that are pleasing to the eyes and revive the teenage years in you. You can also wear it with Jellymix Nail Purple Donut (DISCO Edition).. What's Inside. Component: 1 BTS x Gelato Factory [DYNAMITE] Jellymix Pedi - Sweet Donut. 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.