PT 141 10mg OP Labs (Formerly Oxford Peptides) Pigmented macular lip lesion Clinical Advisor PT 141 Peptide UK Bremelanotide for Research Use 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 oral melanotic macule Search Science Photo Library