Science
Mechanism of Action
This copolymer functions primarily as a film-forming agent, establishing a protective and smooth barrier on the skin's surface. Its polymeric structure significantly enhances the water resistance of cosmetic formulations and serves as an effective thickening agent. By forming occlusive hydrocarbon gels, it demonstrably contributes to reducing trans-epidermal water loss (TEWL), thus promoting skin hydration, and also effectively aids in the suspension of various ingredients.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A related zinc salt of ethylene acrylic acid (EAA) copolymer exhibited stability across a temperature range of 4 °C to 60 °C over a three-month period.
Conflicts
- cationic ingredients
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Ethylene/Zinc Acrylate Copolymer safe for cosmetic use, provided formulations are non-irritating, based on an assumption of low dermal absorption. While the broader category of acrylates copolymers has been associated with irritation but not sensitization, this specific ingredient is permitted in various cosmetic applications globally, including FDA allowance as an indirect food additive in packaging.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This copolymer is a valuable formulation component for enhancing water resistance, providing a smooth skin feel, reducing trans-epidermal water loss, and contributing to product texture, particularly in products designed for dry skin or requiring film-forming properties.
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References
Sources