Science
Mechanism of Action
It functions primarily through the delivery of phenolic compounds like gallic acid and methyl gallate, which neutralize free radicals to prevent oxidative stress. Additionally, it has been shown to modulate macrophage response to enhance the skin's innate antimicrobial defenses and may act as a secondary photoprotective booster by increasing the efficacy of synthetic UV filters.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Identified as the EC50 for significant free radical scavenging activity due to its rich phenolic composition.
- 02 Demonstrated a measurable increase in in vitro SPF when used as a booster for traditional UV filters.
Transparency
Dusting Analysis
Because it is a botanical extract with measurable antioxidant activity at very low concentrations (µg/mL range), many brands include it at 'label-only' levels (below 0.01%) to claim hazelnut benefits without providing the functional 0.1%+ concentration needed for UV boosting or significant oxidative protection.
The Formula
Formulation
Stability
Extracts are generally stable in polar solvents; however, the polyphenolic content may be sensitive to oxidation over time if not properly stabilized within the emulsion.
Synergies
- Synthetic UV Filters
- Gallic Acid
- Vitamin E
Safety
Safety Profile
While generally safe for topical use, individuals with known tree nut allergies should exercise caution. The CIR currently lacks exhaustive longitudinal data on specific dermal toxicity, though it is widely used in food-grade applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A promising botanical antioxidant and SPF booster that offers precision protection against oxidative damage, provided it is formulated at active concentrations.
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References
Sources