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 Melanotan 2: 10 mg for Research UK SARMs Melanotan 2 (MT 2) Orovia Wellness Melanotan 2 Starter Kits Sunshine Tanners Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun