The peptide has to penetrate the outer skin barrier (stratum corneum), which limits how much active compound reaches the deeper dermal layers where collagen and elastin are produced
Bell, L., Whyte, A., Duysburgh, C., Marzorati, M., Van den Abbelle, P., Le Cozannet, R., Fana-Berthon, P., Fromentin, E.m & Williams, C
Immune & Longevity Support chat 24/7 Customer Support labs Lab tested for purity & quality local_shipping Ships from Canada within 24 hours Free shipping on orders $300 & up Automatically applied at checkout Canada's only domestic premium peptide manufacturer Polar Peptides is Canada's only domestic manufacturer and supplier of premium research peptides, with production and fulfillment handled in Canada
2022 May 1;31(3):235-243