Sodium Polyglutamate

Sodium Polyglutamate is the sodium salt of polyglutamic acid, a fermentation-derived biopolymer from glutamic acid. It's used to attract and retain water, create a light film that supports barrier feel, and boost softness in hydrating formulas.
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Ingredient Snapshot

Overview
A fermentation-derived ingredient that locks in lasting moisture.
Category
Hydration, Skin Conditioning, Barrier Support
Type
Humectant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

It delivers long-lasting moisture for a dewy, bouncy feel, and helps reduce visible flakiness while keeping skin feeling cushioned and supple.

Uses In Skincare & Cosmetics

It's included in essences, hydrating serums, moisturizers, eye creams, and hand creams to improve water retention and a supple finish.

Comedogenic Rating

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

Safety

It's typically low irritation and suitable for most skin types, though occasional sensitivity can occur. No common regulatory restrictions are known.

Is Sodium Polyglutamate a Good Ingredient?

It rates Good as a film-forming humectant that improves moisture retention and softness, supporting a cushioned feel. Supportive data exist, but its clinical evidence base is smaller than benchmarks like hyaluronic acid, which keeps it below Great.

Products with Sodium Polyglutamate

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