Up to four compounds, side by side.

The first-generation tanning peptide. More selective than Melanotan II, with a cleaner side-effect profile.

Selective α-MSH analog at the MC1R receptor, stimulating eumelanin synthesis in melanocytes for UV-protective pigmentation.

~30 minutes (parent); pigmentation persists weeks

Generally well tolerated. Monitor moles for change — any melanocortin agonist can stimulate existing nevi.