Peptides are short-chain amino acids. Peptides are the building blocks of the proteins such as collagen, elastin and keratin. When applied topically, peptides can help signal skin to perform a specific corrective action or function as a carrier of ingredients to specific areas of the skin. The Neck Serum is infused with a 9% peptide blend featuring five (5) peptides at clinical proven concentrations. The peptides in The Neck Serum trigger skin's own collagen production to help address early to advanced signs of tech neck and aged neck.