Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome 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 PT 141 10mg Peptide Bank Labial melanotic macule (brown spot on lip) (Stony Brook Case 1) dermatology dermatopathology PT 141 Bremelanotide Research Spartan Peptides PT 141 10mg Cellpept Research