Ingredient review
Acrylate Copolymer Thickener
INCI: SODIUM ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE/ACRYLAMIDE COPOLYMER
A safe, effective thickener that gives skincare products a smooth, non-sticky feel without clogging pores.
In plain English
This is a synthetic ingredient that helps skincare products have a nice, creamy texture. It acts like a thickening agent, turning watery liquids into gels or lotions so they spread easily and feel pleasant on your skin. It also helps keep the product stable so the oil and water 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
Acrylate Copolymer Thickener 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 Acrylate Copolymer Thickener.
- 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 synthetic polymer made from three monomers: sodium acrylate, sodium acryloyldimethyl taurate, and acrylamide. It is produced through controlled polymerization 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 creates a smooth, non-greasy gel or cream texture. It also helps stabilize emulsions by preventing oil and water from separating.
Pros
Lightweight texture
Creates a silky, non-sticky feel that absorbs quickly, making it ideal for gel-based moisturizers and serums.
Stable formulas
Helps keep oil and water mixed together, so your product stays consistent and effective throughout its shelf life.
Cons and cautions
Synthetic origin
Made from petroleum-derived monomers, which may not align with a preference for natural or plant-based ingredients.
Potential contaminant concern
Trace amounts of acrylamide monomer can remain after production, though cosmetic safety panels have deemed current levels safe.
Best for
- Anyone looking for lightweight, non-greasy moisturizers or serums
- People with oily or combination skin who prefer gel textures
Use caution if
- Those who strictly avoid all synthetic ingredients
- Individuals with known acrylate allergies (rare)
Usage tips
Safety summary
Considered safe for topical use at typical concentrations. The potential presence of acrylamide monomer is tightly controlled, and regulatory bodies have set strict limits to ensure consumer safety.
Research notes
Multiple safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that this copolymer is safe in cosmetic formulations. Studies show low skin irritation and sensitization potential.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics globally, including by the FDA (USA) and EU CosIng database. The Cosmetic Ingredient Review (CIR) panel has deemed it safe as used.
- Common uses
- Moisturizers, Serums, Sunscreens, Gels, Creams
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in small amounts and is not known to bioaccumulate.
Good to know
- This ingredient is often listed near the end of an INCI list because it is used at low concentrations.
- It is compatible with most other cosmetic ingredients, including active acids and antioxidants.
Common questions
What is Acrylate Copolymer Thickener in beauty products?
This is a synthetic ingredient that helps skincare products have a nice, creamy texture. It acts like a thickening agent, turning watery liquids into gels or lotions so they spread easily and feel pleasant on your skin. It also helps keep the product stable so the oil and water parts don't separate.
What does Acrylate Copolymer Thickener 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 creates a smooth, non-greasy gel or cream texture. It also helps stabilize emulsions by preventing oil and water from separating.
Is Acrylate Copolymer Thickener safe for most people?
Considered safe for topical use at typical concentrations. The potential presence of acrylamide monomer is tightly controlled, and regulatory bodies have set strict limits to ensure consumer safety.
Who should be careful with Acrylate Copolymer Thickener?
Those who strictly avoid all synthetic ingredients Individuals with known acrylate allergies (rare)
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.