Swarovski Flat Backs No Hotfix are crystal elements backed with platinum foiling for extra brilliance and protection. They can be easily applied to a variety of carrier materials using standard glues and are available in a multitude of sizes, colors, shapes, and cuts.
For nail art, we recommend using gel to adhere the crystals. Gel does not harm the foil backing or the crystal surface as most nail glues do. Cyanoacrylate is a corrosive chemical found in most glues approved for use on nails, it will damage the foil backing of the crystal as well as create a cloudy appearance if it touches the crystal surface.