This listing is for one bottle of mystery 18. This mystery polish is magnetic. The magnetic effect is subtle, and I recommend using a strong neodymium magnet for best results. It does not need to be worn magnetic. It can be worn as a regular crelly. When applying this polish and using a magnet, apply your first coat and let dry. Use a thick second coat and apply magnet directly over nail as close as you can immediately before moving on to next nail. Opaque in 2 coats. Apply topcoat for smoothest finish.