MT 2 (Melanotan II) Polar Peptides MT Peptide Research Grade Beyond Peptides Melanotan II is a synthetic peptide developed with the original scientific goal of stimulating the body's natural melanin production. Researchers explored it as a potential way to help protect skin from UV 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