Snapshot
- Overview
- A fermentation-derived ingredient that locks in lasting moisture.
- Category
- Hydration, Skin Conditioning, Barrier Support
- Type
- Humectant
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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Our take
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.
What it does
Skin Benefits
It delivers long-lasting moisture for a dewy, bouncy feel, and helps reduce visible flakiness while keeping skin feeling cushioned and supple.
Where you'll find it
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.
Before you use it
Safety
It's typically low irritation and suitable for most skin types, though occasional sensitivity can occur. No common regulatory restrictions are known.
Products with Sodium Polyglutamate
