Humectant
SODIUM POLY GAMMA-GLUTAMINE
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A bio-derived polymer of gamma-glutamic acid in sodium-salt form — often called PGA. Acts as a strong humectant, drawing in and holding water, while forming a smooth breathable film on the skin surface.
Function
Skin benefits
- Excellent moisture retention and humectant action
- Forms breathable hydrating film
- Smooths skin texture over time
Known concerns
- Cost premium versus simple humectants
- Limited large-scale clinical data
- Stability sensitive to formulation pH
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related humectants
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.