Science
Mechanism of Action
Operating via an alkali-swellable mechanism, its carboxylic acid groups ionize above pH 6, causing polymer chains to uncoil and expand due to electrostatic repulsion. This creates a high-viscosity network that effectively suspends particles and stabilizes oil-in-water emulsions by forming structural barriers.
Research
Clinical Evidence
High confidence0.3%
Key findings
- 01 Typical usage in leave-on products effectively modifies rheology and stabilizes emulsions without significant skin irritation.
- 02 Effective in rinse-off products for viscosity control and maintaining formulation stability.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Requires neutralization with a base to achieve an optimal pH of 6-8 for maximum thickening and clarity, as it exhibits low viscosity at low pH. It remains stable in the presence of UV light and oxygen.
Conflicts
- Low pH environments (< 5.5) leading to precipitation
- High concentrations of electrolytes/salts which can collapse the polymer network
- Cationic surfactants or polymers
Safety
Safety Profile
The CIR Expert Panel concludes safety when formulated to be non-irritating. Key safety considerations include avoiding polymerization in benzene and minimizing residual HEMA monomer to prevent potential sensitization.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This crosspolymer is a valuable ingredient for formulation stability and texture enhancement, demonstrating high safety and broad skin compatibility across various product types.
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References
Sources