Best For Skin Types
All, Mature
Addresses
Usage Frequency
Daily
What Is Sr-Cat Polypeptide-2?
Sr-Cat Polypeptide-2 is a peptide—a short chain of amino acids—designed to mimic and support natural skin proteins involved in cellular structure and protection. Peptides work by signalling to skin cells, potentially encouraging them to maintain or strengthen their structural components.
This ingredient functions primarily as an antioxidant and skin protectant, helping to defend against environmental stressors. It is also used in hair care formulations for conditioning properties, though its skincare applications are the focus here.
Benefits for Your Skin
How It Works
Sr-Cat Polypeptide-2 works through two primary mechanisms. As an antioxidant, it helps neutralise free radicals—unstable molecules that can damage skin cells and accelerate visible ageing. This protective action may reduce oxidative stress in the skin.
Additionally, this peptide is thought to communicate with skin cells, signalling the importance of maintaining structural proteins. This may help support the integrity of the skin's matrix, which naturally weakens over time and with environmental exposure.
Clinical Evidence & References
Research into lamin-associated polypeptides (the protein family this ingredient relates to) suggests these molecules play a role in cellular structure and stability within skin. Studies indicate that levels of these proteins decline with age, which correlates with changes in skin texture and firmness, though direct clinical data on Sr-Cat Polypeptide-2 specifically in cosmetic products remains limited.
The antioxidant and skin-protective functions are supported by the ingredient's chemical profile, but robust independent studies demonstrating visible results in human skin would strengthen the evidence base. Current use suggests tolerability and perceived benefits, though more targeted research would help clarify its efficacy in skincare formulations.
Published Research
How to Use
Sr-Cat Polypeptide-2 is typically found in serums, moisturisers, and treatment products. For best results, apply to clean skin before moisturiser, or layer into your existing routine. As with most peptide ingredients, consistent daily use is more beneficial than sporadic application, as peptides work gradually to support skin function over time.
Safety & Precautions
Frequently Asked Questions
From the Clinic
Not sure what your skin actually needs?
Two minutes, a few questions, and we’ll point you at what matters — no guesswork.
Take the skin quizRelated Ingredients
Sr-(Hexapeptide-40 Oligopeptide-232 Sh-Oligopeptide-1)
A peptide complex designed to support skin's structural integrity and resilience
Sr-(Oligopeptide-91 Clostridium Botulinum Polypeptide-1)
A peptide derivative designed to support skin conditioning and texture refinement
Sr-Cat Polypeptide-1
A peptide designed to support skin's natural protective mechanisms
Sr-Cat Polypeptide-3
A peptide with antioxidant and skin-conditioning properties
Sr-Cat Polypeptide-4
A peptide-derived ingredient offering antioxidant and conditioning benefits for skin and hair
Sr-Chicken Polypeptide-1
A peptide derived from chicken protein that supports skin's natural barrier function
Learn More About Skincare Ingredients
Explore our comprehensive ingredient glossary to understand what's in your products.
Browse All IngredientsShop Our Products
Find professional skincare solutions at Skintique.