PDF] Pseudoleucoderma after injections of afamelanotide in a patient with atopic dermatitis. Semantic Scholar People are injecting a tanning peptide to get darker skin without the sun., Its called Melanotan., It works by stimulating melanin production in the body but regulators have raised serious safety 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 Tanning Injections & Nasal Sprays: Everything You Should Know