Ingredient review
Carboxymethyl Hydroxyethylcellulose
INCI: CARBOXYMETHYL HYDROXYETHYLCELLULOSE
A gentle, non-irritating thickener that improves product texture without clogging pores.
In plain English
Carboxymethyl hydroxyethylcellulose is a plant-derived, semi-synthetic ingredient that helps give skincare products a smooth, creamy, or gel-like texture. It works by absorbing water and swelling, which thickens the formula and keeps ingredients evenly mixed. It is very gentle on skin and unlikely to cause irritation or breakouts.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Carboxymethyl Hydroxyethylcellulose is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Carboxymethyl Hydroxyethylcellulose.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A chemically modified form of cellulose (the main structural fiber in plants), processed to make it water-soluble and effective as a thickener and stabilizer.
How it works
When added to water, the cellulose chains unwind and form a network that traps water molecules, increasing the viscosity of the product. This also helps suspend other ingredients (like oils or powders) and prevents them from separating.
Pros
Gentle on skin
Carboxymethyl hydroxyethylcellulose has a very low irritation and comedogenic risk, making it suitable for sensitive and acne-prone skin types.
Improves product feel
It creates a smooth, elegant texture in creams, lotions, and gels without leaving a heavy or greasy residue.
Cons and cautions
Not a skin active
This ingredient only affects the texture and stability of a product; it does not provide direct skin benefits like hydration or anti-aging.
Can feel tacky at high levels
If used in very high concentrations, it may leave a slightly sticky or tacky feel on the skin, which some users find unpleasant.
Best for
- Anyone who prefers lightweight, non-oily textures
- People with sensitive or acne-prone skin looking for gentle thickeners
Use caution if
- Those who prefer completely natural, unmodified ingredients
Usage tips
Safety summary
Carboxymethyl hydroxyethylcellulose is considered safe and non-irritating for topical use. It has a low potential for skin sensitization and is not known to be comedogenic.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that modified cellulose polymers like this one are safe for use in cosmetics at concentrations up to 100%, though typical use is much lower.
Common label clues
- Typical concentration
- 0.1% to 2%
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission, with no known safety concerns at typical concentrations.
- Common uses
- Creams, Lotions, Serums, Gels, Cleansers
- Environmental note
- Derived from renewable plant sources (wood pulp or cotton), but the chemical modification process involves synthetic reagents.
Good to know
- It is often used in combination with other thickeners like carbomer to fine-tune texture.
- This ingredient is considered vegan-friendly as it is derived from plant cellulose.
Common questions
What is Carboxymethyl Hydroxyethylcellulose in beauty products?
Carboxymethyl hydroxyethylcellulose is a plant-derived, semi-synthetic ingredient that helps give skincare products a smooth, creamy, or gel-like texture. It works by absorbing water and swelling, which thickens the formula and keeps ingredients evenly mixed. It is very gentle on skin and unlikely to cause irritation or breakouts.
What does Carboxymethyl Hydroxyethylcellulose do in a beauty product?
When added to water, the cellulose chains unwind and form a network that traps water molecules, increasing the viscosity of the product. This also helps suspend other ingredients (like oils or powders) and prevents them from separating.
Is Carboxymethyl Hydroxyethylcellulose safe for most people?
Carboxymethyl hydroxyethylcellulose is considered safe and non-irritating for topical use. It has a low potential for skin sensitization and is not known to be comedogenic.
Who should be careful with Carboxymethyl Hydroxyethylcellulose?
Those who prefer completely natural, unmodified ingredients
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.