Been testing out MT 1 peptide (Melanotan I) lately and honestly this stuff works. Originally developed for skin protection and UV resistance, but most people know it now for boosting melanin and giving Think twice before injecting peptides bought online: unauthorized products can seriously harm you Canada.ca Melanotan II A Sun Kissed Look, and a Confident You. Melanotan II (Tan Jabs): Why They're Not Worth The Risk 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,