Polyglucuronic Acid
Reviewed by Emma · Last updated 18 Aug 2026
Plant-derived or synthetic polysaccharide ingredient | Serves as a film-forming agent and has humectant properties
Addresses
EWG Safety Score
What Is Polyglucuronic Acid?
Polyglucuronic acid is a polysaccharide that occurs in many natural gums. It serves as a film-forming agent in cosmetics and has humectant properties that smooth skin and prevent dehydration. Usage levels of polyglucuronic acid in cosmetics range from 1–3%, the latter being if it’s part of a blend with other hydrators. Although it may be plant-derived, it is often made via bacterial fermentation since this process offers greater yield and quality control.
Clinical Evidence & References
Published Research
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A survey and analysis of the role of molecular chaperone proteins and imidazole-containing dipeptide-based compounds as molecular escorts into the skin during stress, injury, water structuring and other age-related pathology [https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1468-2494.2010.00601.x]
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Structural and mechanistic classification of uronic acid-containing polysaccharide lyases [https://academic.oup.com/glycob/article-abstract/20/12/1547/1987972]
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