Science
Mechanism of Action
This ingredient boosts the skin's ability to retain moisture, leading to significant hydration and a soothing sensation. It stimulates nitric oxide (NO) synthesis within epidermal keratinocytes, which is crucial for improving blood flow and reducing localized swelling. Additionally, it acts as an anti-virulence agent by dose-dependently inhibiting the release of δ-toxin from *Staphylococcus aureus* and downregulating other bacterial virulence factors. In formulations, it also serves as a gel-forming and viscosity-controlling agent.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Accelerated nitric oxide (NO) synthesis in normal human epidermal keratinocytes, indicating potential improvements in blood flow and reduction of lower leg swelling.
- 02 Demonstrated a dose-dependent inhibition of δ-toxin release on in vitro *Staphylococcus aureus* cultures, suggesting anti-virulent effects and downregulation of virulence factors related to host immune evasion.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sodium Dextran Sulfate exhibits excellent stability, remaining intact for over 6 years when stored dry in well-sealed containers at ambient temperature. Solutions are stable for at least 21 days at room temperature, though a minor pH drop may occur. Optimal solution storage pH is 6-7, with broader stability across pH 4-10. High humidity and temperatures exceeding 60°C should be avoided.
Conflicts
- Oxidizing agents (e.g., nitric acid, permanganates)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Sodium Dextran Sulfate is safe for use in cosmetics when formulated to be non-irritating. While historically assessed for use up to 1% in leave-on products, a 2016 re-evaluation noted safe concentrations up to 2% in certain grooming aids, provided the final product remains non-irritating. Some GHS classifications for the raw material indicate potential for irritation; however, in cosmetic formulations, it is generally considered well-tolerated.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sodium Dextran Sulfate is a valuable, multi-beneficial ingredient offering enhanced hydration, microcirculation support, and anti-virulent properties, making it suitable for a broad spectrum of skin types in precision skincare formulations.
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