Science
Mechanism of Action
This oil-soluble derivative, rich in proanthocyanidins and polyphenols, functions primarily by neutralizing free radicals, thereby reducing oxidative stress and inflammation within the skin. It actively strengthens the skin barrier, minimizing transepidermal water loss (TEWL), and stimulates cell restoration and collagen synthesis to improve skin suppleness and firmness. Furthermore, it accelerates wound healing processes and possesses properties that help inhibit bacterial growth.
Research
Clinical Evidence
Medium confidence2%
Key findings
- 01 A double-blind clinical trial observed that a topical 2% Grape Seed Extract (GSE) cream facilitated complete wound repair in an average of 8 days for subjects with surgery wounds, significantly outperforming the 14 days recorded for the placebo group.
- 02 A 12-week clinical study involving 40 volunteers who applied an anti-aging serum containing grape seed extract-loaded hyalurosomes reported measurable improvements in skin hydration, a reduction in wrinkle depth, and slight decreases in both melanin and erythema levels.
Transparency
Dusting Analysis
No data available to suggest common 'dusting' of this ingredient, which typically refers to the use of an ingredient at concentrations too low to be effective, often below a common efficacy threshold.
The Formula
Formulation
Stability
Grape seed extract formulations exhibit stability for at least three months when encapsulated in liposomes or hyalurosomes and stored at 4°C. Generally, the ingredient is stable under typical use and storage conditions, though it should be protected from moisture, dust, and oxygen exposure. Its primary antioxidant benefits are linked to its oil-soluble compounds.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel previously deemed related ingredients like Vitis Vinifera (Grape) Seed Oil and Hydrogenated Grapeseed Oil safe for cosmetic use. While Oleoyl Grape Seed Extract lacks specific individual CIR review, it is derived from generally safe grape seed components. The FDA has acknowledged Grape Seed Extract (GSE) as Generally Recognized As Safe (GRAS) for specific antioxidant applications in food. Dermal irritation and sensitization testing on Vitis vinifera-derived ingredients typically indicates a low risk; for instance, a human 2-week study using 0.15% Vitis Vinifera (Grape) Seed Extract showed no irritation, despite one historical rabbit study noting moderate irritation with neat application.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Oleoyl Grape Seed Extract is a valuable ingredient, offering significant antioxidant protection, promoting robust wound healing and collagen production, and improving skin hydration and firmness with a low risk of irritation across all skin types.
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