Eruptive Dysplastic Nevi Following Melanotan Use Actas Dermo Sifiliogrficas Freckles vs. Age Spots: Can You Tell the Difference? Skin Solutions Dermatology 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 Melanotanassociated melanoma in situ Ong 2012 Australasian Journal of Dermatology Wiley Online Library