Can your fingerprints wear off?

No. Even if you injure the skin on your fingers, your fingerprints grow back as they were. Why? Because the dermal papillae - which are responsible for creating your fingerprints - are not in the top layer of your skin (epidermis). The dermal papillae are like tiny pegs in the dermis, a deeper skin layer. The papillae poke up from the dermis and are protected by the epidermis, creating the ridges of your fingerprints.