Peptides are small building blocks made of amino acids that can join together to form proteins. In skincare, peptides focus on specific issues in the skin through a targeted approach. Matrixyl™ 3000 is a blend of two peptides—palmitoyl tripeptide-1 and palmitoyl tetrapeptide-7—that helps reduce visible signs of aging by supporting key structural components within the skin. Research has shown that it supports skin's natural collagen, which helps smooth out the look of wrinkles and fine lines.