INCI · humectant · CIR review pending · used in 11 products
Polyglutamic Acid
Polyglutamic Acid is a natural, high-molecular weight amino acid polymer composed of repeated glutamic acid subunits (CAS #: 25513-46-6). It is a film-forming polymer that works to improve both the moisture binding and retention properties of the skin. Its large molecular size means it primarily acts on the skin's surface rather than penetrating deeply.
Evidence level
weakEWG score
—Comedogenic
—Category
humectant● Benefits
Claimed to have strong skin hydrating properties, reportedly surpassing hyaluronic acid in moisture retention. It improves both moisture binding and retention on the skin surface through its film-forming action.
hydratingbarrier-supportfilm-forming
● Cautions
