Science
Mechanism of Action
Dextran Sulfate functions as a potent anti-inflammatory agent by binding to proinflammatory cytokines like IL-1β, IL-6, and TNF-α, and inhibiting mediators such as PGE2. It also exhibits anti-angiogenic effects by reducing VEGF, thereby helping to mitigate redness and sensitivity. This ingredient enhances skin hydration by supporting moisture retention and strengthens the skin's barrier. Furthermore, it promotes microcirculation for improved oxygen and nutrient delivery and demonstrates an anti-virulent action by downregulating *Staphylococcus aureus* virulence factors and inhibiting δ-toxin release.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Dextran Sulfate demonstrates significant anti-inflammatory and anti-angiogenic activity. It inhibits PGE2 production, reduces KLK5 and MMP-9 mRNA expression, and decreases IL-8, IL-1α, and VEGF production, making it beneficial for sensitive skin prone to redness and as an adjunctive rosacea treatment.
- 02 It exhibits anti-virulent properties by dose-dependently inhibiting *Staphylococcus aureus* δ-toxin release and downregulating various virulence factors, suggesting its potential relevance for skin pathologies such as atopic dermatitis.
- 03 In specific biomedical applications, dextran sulfate polymer wafer treatment was effective in modulating inflammation and fibrosis, inhibiting scarring and opacification, indicating broader tissue repair capabilities.
Transparency
Dusting Analysis
Dextran Sulfate has a recognized maximum safe concentration of 0.5% in leave-on cosmetics by the CIR, and its benefits are observed at functional levels. It is not typically used at negligible concentrations solely for marketing claims without contributing to efficacy.
The Formula
Formulation
Stability
Supplied primarily as stable sodium salt forms, Dextran Sulfate is freely soluble in water, forming clear solutions at high concentrations (e.g., 100 mg/mL). It exhibits excellent long-term stability (over 6 years) when stored dry in well-sealed containers at ambient temperatures. Formulations must avoid very low pH, as the free acid form is extremely acidic and undergoes rapid autohydrolysis.
Conflicts
- Calcium ions (forms insoluble calcium salt)
- Strong acids (can hydrolyze dextran at high temperatures, rapid autohydrolysis of free acid form at very low pH)
- Oxidizing agents (e.g., nitric acid, permanganates)
- High humidity and high temperature (>60°C)
Safety
Safety Profile
The independent Cosmetic Ingredient Review (CIR) panel has deemed sodium dextran sulfate safe for use in leave-on cosmetic products at concentrations up to 0.5%. While the raw material may be noted as an irritant in some broader biomedical contexts, for topical cosmetic applications at recommended levels, it is generally considered non-irritating due to its poor skin absorption, which minimizes systemic toxic effects. No specific SCCS or FDA approval status for cosmetic use was found, but FDA considers CIR reviews.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Dextran Sulfate is a valuable active ingredient for its proven anti-inflammatory, decongestant, and hydrating properties, making it particularly beneficial for sensitive, redness-prone, and problematic skin types.
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