The Hidden Dangers of Tanning Nasal Sprays That You Should Be Aware Of No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky 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 Black and Brown: Non neoplastic Pigmentation of the Oral Mucosa Head and Neck Pathology Springer Nature Link