A chain of amino acids with various features and forms in skincare that help boost collagen production, reduce fine lines, relieve inflammation, prevent acne breakouts, strengthen skin barrier, and tighten skin. Although very common, there is limited experimentation on the dermal impact of peptides (excluding Copper Peptide, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, or Acetyl Hexapeptide-8).