Research Implications of Melanotan 2 Peptides Core Peptides Loving Tan Platinum 2 HR Express Mousse 3.3 fl oz Ulta Beauty: Self Tanner, Whole Body, Scented Melanotan 1 and Melanotan 2 are peptides that boost melanin to darken your skin without the sun. Melanotan 1 is FDA approved for rare light sensitivity conditions and gives a more gradual Tan without frying in the sun? Yep. Melanotan II boosts your body's own melanin production, giving you a natural bronze with less UV exposure. Plus, it comes with some surprising extra benefits