Science
Mechanism of Action
This polymer thickens through two primary mechanisms: expanding when pH rises above 6.0 due to carboxyl group ionization, and forming a 3D network via hydrophobic interactions with Ceteth-20 side chains.
Research
Clinical Evidence
High confidence0.75%
Key findings
- 01 Provides significant rheology modification, thickening, and stabilization for surfactant-based systems and emulsions without leaving a heavy or tacky residue.
- 02 Enhances water resistance and fixative properties through film-forming capabilities in hair styling products and sunscreens.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Supplied as an acidic liquid, it requires neutralization (pH 6.0-12.0) to activate its thickening, achieving peak efficiency around pH 7.0-8.5 while maintaining high clarity in gels.
Conflicts
- Cationic ingredients
- Polyvalent metal ions
- High electrolyte concentrations
Safety
Safety Profile
The CIR Expert Panel (2018) deemed it safe as used when non-irritating, with residual monomer levels typically below 100 ppm and FDA-suggested 1,4-dioxane impurities below 1 ppm.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This valuable polymer effectively thickens, stabilizes, and imparts film-forming properties to formulations across various product types, exhibiting low irritancy and comedogenicity.
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References
Sources