Polyglutamic Acid
What Polyglutamic Acid is & what it does
A fermentation-derived humectant that forms a moisture-locking film on the skin, binding water even more strongly than hyaluronic acid. It leaves a smooth, plump finish and helps hold hydration in place.
What does Polyglutamic Acid do in skincare?
Polyglutamic Acid is a humectant made of linked glutamic acid units that helps draw and hold water at the skin surface. It can leave skin feeling plump, smooth, and hydrated, and is sometimes paired with other humectants like hyaluronic acid. It works mainly as a moisture-binding agent.
Is Polyglutamic Acid safe?
Polyglutamic Acid is a hydrating ingredient generally regarded as gentle and low risk in topical products at standard levels. It is a large molecule that works at the skin surface to bind water. People with known sensitivities should still check the full product label.
Is Polyglutamic Acid vegan?
Polyglutamic Acid used in cosmetics is commonly produced by fermentation, which can make it suitable for vegan formulas. Because production methods vary, vegan status is best confirmed on the finished product. The ingredient itself is not derived from animal tissue in typical cosmetic grades.
Sunscreens with Polyglutamic Acid
We rate 36 sunscreens that contain it, showing the top 10 by overall score:
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Make prem
Make P:rem Hyal Water-fit Sun Cream SPF 50+ Pa++++
96/100
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Bielenda Professional Supremelab Sun Protect Moisturizing Protective Cream SPF 50
94/100
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Bielenda Future Beauty Hybrid Eye Cream SPF 50
94/100
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Bielenda dr medica Overpigmentation SPF50
94/100
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Bielenda Cera Lipidium Multiceramide Nourishing Barrier Cream SPF 50
93/100
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Bielenda C Marine Care Hydro-Cream SPF 50
90/100
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SKINCYCLOPEDIA Hydrating Face Fluid SPF 50
87/100
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Synchroline Rosacure Intensive Spf 30
85/100
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Naked Sundays Beautyscreen Mineral Peptide Foundation Tint SPF 50
83/100
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Focallure UVA UVB Blue Light Sun Protector Sunscreen Gel SPF 50 Pa+++
82/100