Science
Mechanism of Action
This copolymer utilizes a balanced molecular structure where hydrophobic alkyl chains ensure water resistance and sebum-adhesion, while hydrophilic HEMA units maintain a smooth sensory profile and allow for effortless removal. Upon application, it evaporates to leave a flexible, continuous film that shields the skin from friction and stabilizes UV filters or color particles.
Research
Clinical Evidence
High confidence3%
Key findings
- 01 Evaluations by the CIR Expert Panel confirm that related acrylate copolymers are non-sensitizing up to 5% in leave-on skin applications.
- 02 Data indicates that concentrations between 1% and 3% significantly enhance the wear-time of topical formulations and reduce mechanical irritation.
Transparency
Dusting Analysis
As a functional texture and film-forming agent, it is rarely 'dusted' for marketing purposes; however, levels below 0.5% may fail to provide the intended water-resistance or long-wear benefits.
The Formula
Formulation
Stability
Highly stable across the physiological pH range, though it may require alkaline neutralizers like AMP to achieve maximum film clarity and flexibility.
Synergies
- UV Filters
- Mineral Pigments
- Humectants
Conflicts
- High electrolyte concentrations
- Cationic surfactants
- Strongly acidic environments (pH < 4.0)
Safety
Safety Profile
The polymerized molecule is biologically inert and too large to penetrate the skin barrier. While the starting monomer HEMA is a sensitizer, residual levels in the finished copolymer are strictly limited to less than 100 ppm for safety.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential high-performance polymer for ensuring the durability and even distribution of precision skincare and cosmetic actives.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources