Science
Mechanism of Action
It forms a continuous, flexible, and often water-resistant film on the skin, aiding moisture retention and smoothing microrelief. Additionally, it stabilizes emulsions by increasing viscosity and suspending particles.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Human Repeated Insult Patch Tests (HRIPT) showed it was non-irritating and non-sensitizing at 25% aqueous dilution and 30% solids concentration.
- 02 Related acrylate crosspolymers also showed no irritation or sensitization up to 2.5% in human testing.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Its stability and solubility are highly pH-dependent, typically requiring neutralization to achieve full thickening and clarity. Once neutralized, it remains stable across a wide pH range of 3-12.
Conflicts
- Cationic ingredients (due to its anionic nature)
- High concentrations of electrolytes/salts (can cause viscosity loss)
- Strongly acidic environments (may precipitate if not specifically acid-stable)
Safety
Safety Profile
The CIR Expert Panel considers this ingredient safe for use in cosmetics when properly formulated to prevent irritation. A key safety consideration is residual monomer content, which is tightly controlled below 1000 ppm in cosmetic-grade polymers.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This copolymer is a valuable ingredient for improving texture, film-forming, and water resistance in a wide range of cosmetic products due to its excellent safety profile.
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References
Sources