Melanotan II reverses memory impairment induced by a short term HF diet ScienceDirect Melanotan Tanning Injections The Low Down Lynton Lasers 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 Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News