Science
Mechanism of Action
It acts by upregulating the expression of Aquaporin-3 (AQP3) and Occludin (OCLN), essential proteins for cellular water transport and tight junction integrity. Simultaneously, it protects the skin's structural matrix by inhibiting Kallikrein-5 (KLK5) and hyaluronidase enzymes, while providing antioxidant defense via DPPH radical scavenging and reducing inflammation through COX-1/COX-2 inhibition.
Research
Clinical Evidence
High confidence3%
Key findings
- 01 A 2022 split-face clinical study demonstrated that a 3.0% formulation outperformed 3.0% niacinamide in reducing trans-epidermal water loss (TEWL) and boosting hydration.
- 02 Manufacturer-validated trials indicate that concentrations between 0.3% and 3.0% significantly accelerate cellular renewal and improve complexion radiance without irritation.
Transparency
Dusting Analysis
Frequently included in 'botanical blends' at trace amounts for marketing purposes. To achieve the clinically validated benefits for barrier repair and cell turnover, the extract should be present at a minimum of 0.3%, with 3.0% required for superior hydration performance.
The Formula
Formulation
Stability
Highly sensitive to acidic environments; stability and efficacy degrade significantly when formulated below pH 4.0.
Synergies
- Empetrum Nigrum (Crowberry) Extract
- Glycerin
- Hyaluronic Acid
Conflicts
- Strong Alpha Hydroxy Acids (AHAs)
- Low pH L-Ascorbic Acid
- Acidic chemical exfoliants
Safety
Safety Profile
Generally regarded as non-sensitizing, though its natural astringent properties may cause mild tightness if used at extremely high concentrations in dry skin types.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A high-performance botanical active that offers clinically superior barrier support and hydration compared to standard humectants like niacinamide when used at the 3% threshold.
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References
Sources