Oral pigmentation in children: a diagnostic challenge Archives of Disease in Childhood Dentistry and Medicine: Pigmentation and Discoloration of Oral and Facial Tissues Tanning from the inside out = Highly Dangerous and Illegal! Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such Treatment of labial melanotic macules on the lip. These are benign spots that appear on the lips for no apparent reason. The causes are mostly genetic, but similar spots can appear in smokers, after