Sodium Polyglutamate
An amino-acid humectant and film-former. It holds moisture and smooths skin. Well tolerated.
Evidence by route
Topical application
A functional humectant. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Sodium Polyglutamate (INCI: Sodium Polyglutamate) is a humectant and film former derived from the amino acid glutamic acid. It attracts and holds water at the skin's surface and leaves a light film that makes the skin feel smoother and more flexible. On efficacy, it is a reasonable humectant. It does not have the backing of actives like hyaluronic acid or glycerin, but it delivers real surface hydration and a good feel. It works as support within a well-built formula. Applied topically it poses no systemic risk, so it can be used during pregnancy and breastfeeding. Tolerance is high, with low irritation potential and low allergy risk. It is a good choice for sensitive skin and has no notable comedogenic profile.
Frequently asked questions
Is Sodium Polyglutamate safe during pregnancy?
Sodium Polyglutamate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Sodium Polyglutamate for?
Sodium Polyglutamate suits: normal, dry, combination, oily, sensitive.
What is Sodium Polyglutamate and what does it do in cosmetics?
An amino-acid humectant and film-former.
What's the INCI name for Sodium Polyglutamate?
The INCI name is Sodium Polyglutamate.
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