Nitisinone increases melanin in people with albinism National Institutes of Health (NIH) Melanotan II in Santa Barbara, CA Eternity Health Partners She reportedly darkened her skin through hormone injections 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