Melanin Nasal Spray Before and After TikTok 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 What It Is and Its Relation to Skin Cancer Hypopigmented burn hypertrophic scar contains melanocytes that can be signaled to re pigment by synthetic alpha melanocyte stimulating hormone in vitro PLOS One