Sr-Cat Polypeptide-3

Sr-Cat Polypeptide-3 is a peptide—a short chain of amino acids—designed to function as an antioxidant and skin protectant in skincare formulations. Peptides are increasingly used in cosmetic chemistry because they are relatively small molecules that can penetrate the skin's outer layers, potentially influencing skin condition and appearance.This ingredient serves multiple functions: it helps neutralise free radicals that can damage skin cells, conditions the skin barrier, and provides protective benefits against environmental stressors. It is typically found in serums, moisturisers, and tar…

Sr-Cat Polypeptide-3 works primarily as a free radical scavenger. Free radicals are unstable molecules that form when skin is exposed to environmental stressors; they can damage cell structures and accelerate visible ageing. As an antioxidant, this peptide donates electrons to neutralise these free radicals, reducing their potential to cause harm.The peptide also interacts with the skin's outer layers to enhance hydration retention and strengthen the skin barrier. This dual action—protecting against oxidative damage whilst improving moisture retention—contributes to a more resilient, condit…

Sr-Cat Polypeptide-3 is best used as part of a layered routine. Apply it to clean skin, either in a serum or moisturiser, before heavier creams or oils. It pairs well with other antioxidants (such as vitamin C or niacinamide) and works in both morning and evening routines. Consistent use over several weeks will give the clearest sense of its effects on your skin.

Sr-Cat Polypeptide-3 is generally well-tolerated in skincare formulations. As with any ingredient, patch test before widespread use if you have very sensitive skin or are prone to reactions.