Dextran is a polysaccharide produced by fermenting sugars with Leuconostoc bacteria. Formulators use it as a rheology modifier and film former to stabilize emulsions, improve glide, and boost water binding on the skin's surface.
A sugar-based polymer that helps skin hold onto moisture.
Category
Hydration, Skin Conditioning
Type
Thickener
Ratings
Overall Rating
Good
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Dextran a Good Ingredient?
Good rating because this fermented polysaccharide improves water retention and texture, offering gentle, immediate hydration with low irritation. It works broadly across formulations without relying on potent actives.
What it does
Skin Benefits
Helps skin feel more supple by holding surface moisture. Contributes to a smoother, hydrated look in leave‑on formats.
Where you'll find it
Uses in Skincare & Cosmetics
Used in hydrating serums, eye gels, sheet mask essences, and soothing gel moisturizers for moisture support and texture refinement.
Before you use it
Safety
Typically low risk of irritation at common use levels. Rare sensitivity can occur; discontinue if redness or discomfort appears. No known cosmetic‑specific regulatory restrictions.