Polyglutamic Acid

Polyglutamic acid is a biopolymer produced by fermenting glutamic acid. It's valued for strong water-binding and slip, forming a lightweight film that reduces moisture loss in a wide range of leave-on and rinse-off formulas.
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Ingredient Snapshot

Overview
A strong moisture-binder that keeps skin dewy and supple longer.
Category
Hydration, Barrier Support
Type
Humectant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Gives a dewy, bouncy feel and helps skin stay hydrated longer by forming a breathable veil. Can make the complexion look smoother and more supple.

Uses In Skincare & Cosmetics

Popular in hydrating serums, sheet masks, and moisturizers to boost cushion and layer well under makeup. Also used in eye gels to improve immediate skin comfort.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally low risk for irritation and suitable for daily use. In layered routines it can occasionally pill, which is a texture issue rather than a safety concern. No common regulatory restrictions noted.

Is Polyglutamic Acid a Good Ingredient?

It's a fermentation-derived humectant and film-former with supportive in vitro and early clinical data for hydration and smooth feel, plus a low irritation profile, good enough for a Good rating. Its water-soluble, stable nature helps it layer well in varied formulas.

Products with Polyglutamic Acid

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