Peptides promise glowing skin, a ripped body and better sex but are they safe? Variation of the clavicle's muscle insertion footprints a cadaveric study Scientific Reports Clavicular OPENED UP about using PEPTIDES to get TAN and explained how it works So that Melanotan thing it's a peptide you take that increases melanin? It increases the amount of Clavicular opened up to Akademiks about using peptides to get a tan and broke down how it actually works Clavicle, a neglected bone: Morphology and relation to arm movements and shoulder architecture in primates Voisin 2006 The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology Wiley Online Library