Palmitoyl tetrapeptide-7 is a synthetic peptide compound that combines several chains of amino acids to reduce skin inflammation and skin damage. This compound is believed to stimulate the regeneration of collagen fibers in the dermis by acting as a cellular messenger. Palmitoyl tetrapeptide-7 is thought to increase the amount of hyaluronic acid in the skin, helping to tighten the skin by attracting moisture to the epidermis and is therefore used the cosmetic industry in anti-aging products.