Peptides are short chains of amino acids that occur naturally within the skin, forming the building blocks of proteins, and acting as signal molecules, triggering the production of skin-supporting proteins.
Peptides are the basis of numerous studies, and have proven firming, soothing and hydrating abilities, leading to a stronger skin barrier, fewer fine lines and wrinkles, reduced inflammation and more elastic skin. Peptides to look out for include copper peptide, carnosine, n-acetylcarnosine, palmitoyl tripeptides, tetrapeptides and hexapeptides.