This is a common rash on the face of infants when petroleum jelly (Vaseline) is rubbed onto the skin. Vaseline blocks the sebaceous glands causing many small papules. It may also cause contact dermatitis. The rash disappears when petroleum jelly is no longer used. Greasy substances, such as petroleum jelly, should not be used on the face.
Vaseline is a common cause of a fine papular rash on the face of infants.