Ingredient review
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
INCI: HYDROXYETHYL ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE COPOLYMER
A safe, synthetic thickener that gives lightweight gels and creams a smooth, non-sticky feel.
In plain English
This is a synthetic ingredient that helps thicken water-based products like serums and gels. It creates a smooth, silky texture without leaving a heavy or greasy feeling on your skin. It also helps keep the product stable so the water and oil parts don't separate.
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer 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 Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer.
- 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 high-molecular-weight polymer made from two monomers: hydroxyethyl acrylate and sodium acryloyldimethyl taurate. It is produced synthetically and is widely used in cosmetics as a rheology modifier.
How it works
When added to water, the polymer chains swell and form a network that traps water molecules, increasing the viscosity of the formula. This gives the product a gel-like consistency and helps suspend other ingredients evenly. It also stabilizes emulsions by forming a thin film around oil droplets.
Pros
Lightweight feel
Unlike some thickeners that leave a heavy or sticky residue, this polymer creates a silky, non-tacky finish that works well under makeup or sunscreen.
Excellent stability
It helps keep water and oil phases mixed, preventing your product from separating over time, which extends shelf life and ensures consistent performance.
Cons and cautions
Synthetic origin
It is made in a lab from petrochemical-derived monomers, so it won't appeal to consumers looking for plant-based or natural alternatives.
Potential tackiness at high levels
If used above 5%, it can leave a slightly sticky or film-like feeling on the skin, though most formulas stay well below that threshold.
Best for
- Anyone who prefers lightweight, fast-absorbing gels or serums
- People with oily or combination skin who want a matte finish
Use caution if
- Those seeking 100% natural or organic formulations
Usage tips
Safety summary
This ingredient has a low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin, and has no known toxicity concerns at cosmetic-use levels.
Research notes
Safety assessments by the Cosmetic Ingredient Review panel and other bodies confirm its safety as a cosmetic thickener. No significant human or environmental hazards have been identified in published literature.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics worldwide, including the EU, USA, and Japan. The CIR panel has reviewed it and deemed it safe at typical use concentrations.
- Common uses
- Gels, Serums, Creams, Lotions, Sunscreens
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in small amounts and is not known to bioaccumulate significantly.
Good to know
- This ingredient is often found in gel-cream hybrids that promise a 'water cream' texture.
- It is considered safe by major regulatory bodies including the Cosmetic Ingredient Review (CIR) panel.
Common questions
What is Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer in beauty products?
This is a synthetic ingredient that helps thicken water-based products like serums and gels. It creates a smooth, silky texture without leaving a heavy or greasy feeling on your skin. It also helps keep the product stable so the water and oil parts don't separate.
What does Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer do in a beauty product?
When added to water, the polymer chains swell and form a network that traps water molecules, increasing the viscosity of the formula. This gives the product a gel-like consistency and helps suspend other ingredients evenly. It also stabilizes emulsions by forming a thin film around oil droplets.
Is Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer safe for most people?
This ingredient has a low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin, and has no known toxicity concerns at cosmetic-use levels.
Who should be careful with Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer?
Those seeking 100% natural or organic formulations
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.