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 Melanotan 2 is an unregulated, unsafe substance often advertised as a self tanning aid., Use of Melanotan 2 has been linked to serious side effects including loss of vision, moles, stroke, muscle I accidentally undid years of skin work and didnt realize it until it was too late., At the beginning of November, I started taking melanotan 2 and honestly?, I loved it., My tan deepened Uses of Melanotan II_Chemicalbook Melanotan II: Tanning, Sexual Health Benefits, & Safety Concerns