Our new Lightning Powder Aerosol Fingerprint Powder uses the same powder that you have come to trust over the years, but in a convenient, controlled aerosol spray. The cleanest way to apply powder for processing suspected fingerprints. For use for maximum contrast against a dark-colored background. After dusting the surface, lift the print the same as you would with white powder. However, when you lift the developed print with tape or a Lightning Lift™, place it on a black backing card or use a Handi-Lift™ with a black backer.