I accidentally undid years of skin work and didnt realize it until it was too late., At the beginning of November, I started taking melanotan 2 and honestly?, I loved it., My tan deepened 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 Love Island generation' skin cancer fear BBC News How Long Does Melatonin Take to Work? Can You Use Melanotan Long Term? Melanotan What It Is and Its Relation to Skin Cancer