Science
Mechanism of Action
Its acrylate/methacrylate backbone provides film-forming and viscosity control, while the vinylpyrrolidone (VP) component imparts hydrophilic properties. This unique structure forms a continuous barrier on the skin, enhancing hydration and improving product longevity.
Research
Clinical Evidence
High confidence0.75-1%
Key findings
- 01 Optimal thickening and film-forming properties are observed within the 0.75-1% concentration range, ensuring easy rinse-off.
- 02 Clinical assessments confirm it remains on the stratum corneum, preventing skin barrier penetration and systemic toxicity.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As an amphiphilic copolymer, with hydrophobic stearyl methacrylate and hydrophilic VP segments, it is an excellent emulsion stabilizer.
Conflicts
- High concentrations of electrolytes/salts
- Strongly acidic environments (may precipitate)
- Cationic surfactants (potential complexation)
Safety
Safety Profile
The 2018 CIR Expert Panel deemed it safe in current practices when formulated to be non-irritating. Residual monomer levels are strictly controlled to less than 100 ppm to prevent sensitization.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A valuable multi-functional ingredient, it enhances moisture retention and formulation stability while providing film-forming properties with a low risk of irritation or comedogenicity.
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References
Sources