Polyglucuronic acid is a water-soluble polysaccharide derived from glucuronic acid units. It's used as a humectant to attract moisture and improve skin feel, though published cosmetic performance data remain limited.
A humectant that draws water to skin for a plumper look.
Category
Hydration
Type
Humectant
Ratings
Overall Rating
Fair
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Polyglucuronic Acid a Good Ingredient?
It rates Fair: it provides basic humectant hydration, but published cosmetic performance data are limited, so its benefits against established humectants remain uncertain. Minor drawbacks can include tackiness or formula pilling in some systems.
What it does
Skin Benefits
Draws water to the skin’s surface for a plumper look and improved comfort; however, evidence for superior performance is still limited. Suitable for adding lightweight hydration without heaviness.
Where you'll find it
Uses in Skincare & Cosmetics
Included in watery serums and essence toners to build hydration layers and complement other humectants. Also used in gel moisturizers for a refreshed finish.
Before you use it
Safety
Typically well tolerated with low irritation potential. No widely recognized regulatory restrictions for leave-on use. Those with very reactive skin should patch test due to limited data.