Undecylenoyl Grape Seed Extract
INCI: UNDECYLENOYL GRAPE SEED EXTRACT
Reviewed by Emma · Last updated 14 Aug 2026
Also known as: Undecylenoyl Grape Seed Extract
A stabilised grape extract with antioxidant properties for protecting skin from environmental stress
Best For Skin Types
All, Oily, Combination, Mature
Addresses
Usage Frequency
Daily
What Is Undecylenoyl Grape Seed Extract?
Undecylenoyl Grape Seed Extract is a derivative of grape seed extract, chemically modified with an undecylenoyl chain to improve stability and skin penetration. Grape seed is rich in polyphenols, particularly proanthocyanidins, which are compounds known for their antioxidant activity.
In skincare formulations, this ingredient functions primarily as an antioxidant, helping to neutralise free radicals generated by environmental factors such as UV radiation and pollution. The chemical modification aims to make the extract more effective at remaining stable in cosmetic products and reaching deeper skin layers.
Benefits for Your Skin
How It Works
Free radicals are unstable molecules generated by UV exposure, pollution, and normal metabolic processes. They can damage skin cells and accelerate visible signs of ageing. Antioxidants like undecylenoyl grape seed extract neutralise these free radicals by donating electrons, rendering them harmless.
The undecylenoyl modification is designed to improve how well the grape extract penetrates the skin barrier and remains active in formulations, potentially making it more effective than unmodified grape seed extract.
Clinical Evidence & References
Grape seed extract itself has a reasonable body of research supporting its antioxidant and polyphenol content. However, specific clinical evidence for the undecylenoyl-modified version is limited in published literature. The modification is theoretically sound for improving stability and penetration, but robust human studies demonstrating its efficacy in skincare remain sparse.
As with many antioxidant ingredients, benefits are most realistic when used as part of a comprehensive sun protection and skincare routine rather than as a standalone anti-ageing solution.
How to Use
This ingredient is typically found in serums, moisturisers, and treatment products. Use daily as part of your routine, alongside a broad-spectrum SPF 30 or higher during the day. Antioxidants work best in a layered routine; apply to clean skin before heavier creams or oils, as it may have better efficacy on slightly damp skin.
Safety & Precautions
Frequently Asked Questions
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