Science
Mechanism of Action
This polyanionic dextran derivative operates by drawing water from the environment and deeper skin layers to the stratum corneum, thereby enhancing the skin's moisture content. This humectant action contributes to improved skin hydration and supports the integrity of the skin barrier.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sodium Carboxymethyl Dextran exhibits stability across a broad pH range of 4.0 to 9.0 and various temperature conditions; however, extreme environments may slightly diminish its efficacy. Optimal potency and purity are maintained for at least three years, extending beyond six years under dry storage in well-sealed, dark containers at ambient temperature. Its polyanionic nature and solubility are particularly enhanced in neutral to basic pH environments, becoming essentially uncharged at very low pH (0-2), with a pKa of approximately 4.
Conflicts
- cations
- positively charged molecules
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed Sodium Carboxymethyl Dextran, along with other microbial polysaccharide gums, concluding its safety for use at current practices and concentrations in cosmetic formulations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
As a safe and effective humectant, moisturizer, and formulation stabilizer, Sodium Carboxymethyl Dextran is a valuable component for enhancing skin hydration and product stability across various skin types.
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References
Sources