Melanotan Tanning Injections The Low Down Lynton Lasers Melanocortin Erectile Dysfunction: Exploring the Pathway and Supplement Options Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and longer lasting than Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan II an overview ScienceDirect Topics JLE European Journal of Dermatology Eruptive naevi and darkening of pre existing naevi 24 h after a single mono dose injection of melanotan II