The ingredient, explained
Polyglutamic Acid
Polyglutamic Acid has published research relevant to the stated experimental context.
Ingredient guide
What it is and what it does
Polymer of glutamic acid
About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗
- Skin conditioning
- A broad cosmetic role for maintaining skin condition. It does not identify a particular clinical benefit.
Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗
Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.
A closer look
What the research shows
Laboratory research
Polyglutamic acid increased tracer migration in control skin but decreased it in detergent-disrupted skin, showing context-dependent barrier effects in the assay.
What this does not tell us
Laboratory tracer endpoint with three tissues per condition; no human hydration trial. Molecular size and production details are not established here.
Sources for this summary. DOI 10.1159/000529630 ↗
Research review checked Oct 1, 2026
Selective exact-identity review of 12 supplied local candidates and the targeted primary-source search recorded below. Bounded review, not a systematic search.
Ingredient research is not proof that a product containing this ingredient works.
Read the 1 selected study
Follow the formula
Products containing this ingredient
From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.
Names and identifiers
Registry identity
Polymer of glutamic acid
- INCI name on ingredient lists
- POLYGLUTAMIC ACID
- CAS registry number
- 25513-46-6
Sources for this ingredient record
- EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗ · ODbL 1.0 (Open Beauty Facts database) · Recorded Aug 8, 2026