Melanotan II GenScript Tanning Purity Peptides Melanotan II in Santa Barbara, CA Eternity Health Partners 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, No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky