What it is

Melanotan I is afamelanotide, written chemically as [Nle4, D-Phe7]-alpha-MSH: thirteen amino acids, straight-chained, a hardened copy of a hormone your own pituitary and skin already make. It acts on MC1R, the pigment receptor on melanocytes, and drives the cell to make dark eumelanin. The documented product form is a 16 mg implant, about the size of a grain of rice, placed under the skin by a specialist and releasing slowly over about two months. A catalog powder vial of 1 mg is the same molecule in a different package, and is not that implant.