Introducing the 1cc CollaShot Plumping Serum from Kiehl's Since 1851, a revolutionary treatment crafted to restore visible plumpness and firmness. The advanced formula harnesses Recombinant Collagen Polypeptides within an innovative Supra-Liposomal delivery system, ensuring deep skin surface penetration up to 10 layers. Biosynthetic collagen polypeptides similar to protein fragments found in human collagen.