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Hey. How's life? Melanotan 2 (MT2) is a synthetic incretin that is similar to a hormone found in the body called melanocyte. Melanin is a pigment whose presence is responsible for the skin's hue and its susceptibility to tanning. If you have light skin and you can't tan, or if you do manage to tan your skin quickly, Melanotan 2 is a real lifesaver for you.