What Are Peptides?
Peptides are biologically occurring short chains of amino acid monomers linked by peptide (amide) bonds.
Peptides are fragments of proteins. On their own, peptides are made up of amino acids. When amino acids are combined in certain formations they create specific peptides (and there are hundreds of peptides), and when peptides are formed in a certain way, they make specific proteins.
Proteins are the fundamental building blocks of skin.