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 Can You Use Melanotan If You Have Very Fair Skin? Melanotan II in Santa Barbara, CA Eternity Health Partners Change in moles linked to use of unlicensed sun tan jab The BMJ Been testing out MT 1 peptide (Melanotan I) lately and honestly this stuff works. Originally developed for skin protection and UV resistance, but most people know it now for boosting melanin and giving White model Martina Big, who now a ''black' after taking tanning injections, announces plans to move to Africa.