Science
Mechanism of Action
It functions as an associative, alkali-swellable emulsion (ASE) polymer. Upon neutralization, its acid groups ionize and repel, causing swelling and increased viscosity, while hydrophobic steareth-20 groups form a stabilizing 3D network.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Studies indicate it improves spreading characteristics, sensory feel, and synergistic efficacy of active ingredients in skin lightening formulations.
- 02 Research suggests this copolymer rinses more easily from skin and hair compared to many synthetic polymers, minimizing long-term build-up.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Supplied as a low-viscosity emulsion, it requires neutralization with a base to achieve its thickening effect. It demonstrates exceptional stability in aggressive alkaline environments and in the presence of hydrogen peroxide.
Synergies
- Active ingredients (improves synergistic efficacy)
Conflicts
- Low pH environments (viscosity drops below pH 6.0)
- High concentrations of cationic surfactants (potential precipitation if not pre-neutralized)
- Heavy metal ions
Safety
Safety Profile
The CIR Expert Panel concluded Acrylates Copolymers are safe when used up to 5% and formulated to be non-irritating. Residual monomer levels are strictly controlled below 20-100 ppm.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This copolymer is a valuable rheology modifier, offering excellent thickening and stabilization, especially in challenging high-pH formulas, with a favorable safety and skin compatibility profile.
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Similar Ingredients
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References
Sources