Fingerprint dust is not designed to stick to the surface, just the oils or whatever in fingerprints. Dust the area lightly to remove all the loose dust and then clean as normal. I recommend using Optimum No Rinse in a spray bottle and rinse with a nice fluffy microfiber. Once all the residue is gone I would clay the area just in case. Make sure all the dust is off with the no rinse before claying and keep the clay well lubricated.