Moles are spots on the skin that are brown, blue, black, or flesh-colored.
They are collections of pigment cells that may stay smooth, become raised or wrinkled, or may even fall off in old age. Moles on the face are sometimes called beauty marks. Most people have moles somewhere on their bodies. Most moles appear by age 20 and persist for an average of 50 years. There usually are more of them after the age of 50.