Science
Mechanism of Action
It acts through electrostatic stabilization and hydrophobic modification, forming a 3D network around oil droplets. The beheneth-25 methacrylate co-monomer provides hydrophobic groups, increasing affinity for oils and silicones, stabilizing emulsions even without traditional emulsifiers.
Research
Clinical Evidence
Medium confidence1%
Key findings
- 01 A 1% aqueous solution achieves high viscosity (~53,600 cP) when used alone.
- 02 Demonstrates synergistic thickening with Scleroglucan, improving viscosity in electrolyte-containing systems.
Transparency
Dusting Analysis
No specific data on dusting was found in the provided research, suggesting it is not a common issue for this ingredient.
The Formula
Formulation
Stability
This ingredient is pre-neutralized, cold-processable, and stable under UV light. It is compatible with polar organic solvents like ethanol, but may release ammonia in highly alkaline conditions (pH > 9.0).
Synergies
- Scleroglucan (for enhanced thickening in electrolyte systems)
Conflicts
- High electrolyte concentrations (when used as a standalone thickener)
- Strong oxidants
- Highly alkaline environments (pH > 9.0)
Safety
Safety Profile
The CIR Expert Panel found it safe for use due to its large molecular size and negligible skin penetration. Manufacturers should ensure residual acrylamide monomers are limited to 0.1 mg/kg in leave-on products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This crosspolymer is a versatile and effective thickening and stabilizing agent, well-suited for a wide range of formulations and skin types due to its low irritancy and robust performance.
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References
Sources