What do peptides do for skin?

Peptides are short chains of amino acids that serve as signaling molecules in the skin, instructing cells to produce more collagen, elastin, and hyaluronic acid. Different peptides have different functions — some are collagen-stimulating, others are neuropeptides that relax facial muscles, and some help repair the skin barrier. They are a gentle, well-tolerated anti-aging ingredient suitable for all skin types including sensitive.