What causes minutiae to form on fingerprints?

Fingerprints are individual and unique patterns formed by small ridges on the inside of the hand and fingers in humans, similar patterns are also found on the sole of the foot and fingers. The minutiae lines are arranged in patterns that do not change, and that are characteristic of person so that not even identical twins have the same imprint, thus allowing each person in the world to be identified through these patterns. Fingerprints are produced due to, among other things, fat particles that protect the skin and leave spots on certain surfaces that are visible to the naked eye. Thus, these indentations are produced on the surface of the skin, which end up being essential as a method of personal identification.