How Man Made Things on Instagram: "A forensic expert dusts an area for fingerprints by carefully applying a fine fingerprint powder, usually made of graphite or other materials, to the surface where prints are suspected. The powder adheres to the natural oils and sweat residues left by the ridges of a finger, making the otherwise invisible print visible. A soft brush is used to gently spread the powder without smudging the details. Once the fingerprint becomes clear, it is photographed for docum