When a criminal attempts to obscure his or her fingerprints by applying a chemical agent to the pads of the fingers?

They might be trying to interfere with the ridge patterns on their fingerprints to avoid identification through fingerprint matching. This can make it challenging for law enforcement to gather evidence linking the individual to a crime scene. However, forensic experts have techniques to still potentially recover identifiable fingerprints through various methods, such as chemical treatments or alternative light sources.