Thickener

Hydroxyethylcellulose

A natural thickener based on cellulose — hydroxyethylcellulose provides gels and serums with that characteristic smooth, jelly-like texture without a film feel. One of the most popular thickeners in Korean gel creams and water-based formulas.

ThickenerGelling agentNaturalcellulose

✓ Safe

Comedogenic Rating

0/5

Irritation Potential

0/5

What is it?

Hydroxyethylcellulose (HEC) is a cellulose derivative (plant polysaccharide) modified with hydroxyethyl groups for water solubility. In INCI: Hydroxyethylcellulose. A powder that dissolves in water and forms clear or semi-transparent gels. Stable over a wide pH range (2–12) — compatible with AHA, BHA, and vitamin C.

The main gelling agent and thickener in water-based serums, gel creams, gel toners, and eye contours. Provides formulas with a jelly texture and helps evenly distribute actives on the skin. Widely used in K-beauty glass skin formulas.

Key Benefits

✦

Jelly texture without a heavy feel

HEC forms lightweight clear gels with a characteristic bouncy feel — usually less sticky than xanthan gum. Washes off with water and is well-suited for light water textures.

◈

Broad compatibility with actives and pH

Stable in acidic environments (pH 2–4) — an ideal thickener for AHA toners, vitamin C serums, and BHA peels, where other polymers (carbomer) lose viscosity.

✧

Film formation and protection

A thin hydroxyethylcellulose film on the skin's surface provides a light moisture seal, softens, and protects the stratum corneum — especially noticeable in eye-area products.

Suitable for

Suitable for all skin typesOily skinSensitive skin

Main Actions

✓ Thickening✓ Gelling✓ Formula stabilization✓ Light hydration

Texture, not active treatment

Hydroxyethylcellulose makes the formula more convenient: thickens, stabilizes, and helps evenly distribute actives. Its light film can reduce the feeling of tightness, but for pronounced hydration or barrier restoration, humectant and lipid actives are needed alongside.

Check if this ingredient works for your skin — analyze your full product formula for free.

Analyze your product