Well it's that time of year and the MT2 questions are flooding the DMs so thought if quickly cover how I personally like to use MT2 to get all the possitives and Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan II A Sun Kissed Look, and a Confident You. Peptides for tanning do exist. Melanotan 1 and Melanotan 2 both work at increasing melanin in the skin. Melanotan 1 takes longer to activate. Melnotan 1 is FDA approved. Melanotan 2 does libido, Melanotan 2 Reviews, Clinical Trials, and Safety