Science
Mechanism of Action
This zwitterionic polymer establishes a continuous, protective film upon application to the skin, potentially assisting in hydration by mitigating transepidermal water loss (TEWL). Its distinct polymeric structure, which incorporates a betaine unit, also confers antistatic properties.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polymers containing a betaine unit, such as POLYMETHACRYLOYL ETHYL BETAINE, exhibit excellent water solubility across an expansive pH range, specifically from 1.3 to 12.7, indicating stability in both highly acidic and alkaline environments. These polymers are noted for their robust nature, resisting degradation from additives and showing resilience against precipitation even with the incorporation of electrolytes.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel determined that Methacryloyl Ethyl Betaine/Acrylates Copolymer is safe for topical application at concentrations up to 11%, provided the finished formulation is designed to be non-irritating and non-sensitizing. General alkyl betaines were also found safe under similar formulation conditions. Specific SCCS or FDA status for this polymer is not explicitly available in the reviewed data.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYMETHACRYLOYL ETHYL BETAINE is a valuable film-former that helps to protect the skin barrier and potentially reduce transepidermal water loss, with a well-defined safety profile up to 11% when properly formulated.
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References
Sources