Ingredient review

Acrylates Crosspolymer Thickener

INCI: SODIUM ACRYLOYL DIMETHYL TAURATE/PEG-8 DIACRYLATE CROSSPOLYMER

A safe, effective thickener that gives water-based products a smooth, non-sticky feel.

beautyskincaretexturizer

In plain English

This ingredient is a synthetic powder that absorbs water and swells into a gel. It helps skincare products feel silky and spread easily without leaving a greasy or sticky residue. Think of it as a thickening agent that also keeps the product stable so it doesn't separate into oil and water layers.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 5

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
How reviews are scored

Quick decision guide

Useful, but context matters

Acrylates Crosspolymer 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Acrylates Crosspolymer Thickener.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A high-molecular-weight synthetic polymer made from acrylic acid derivatives. It is designed to thicken water-based formulas and stabilize emulsions (mixtures of oil and water).

How it works

When added to water, the polymer chains absorb water and expand, creating a network that increases the viscosity (thickness) of the product. This network also helps suspend other ingredients and prevents oil and water from separating.

Pros

Lightweight texture

Creates a silky, non-greasy feel that absorbs quickly, ideal for gel-based serums and moisturizers.

Excellent stabilizer

Helps keep oil and water mixed together, preventing separation and extending product shelf life.

Cons and cautions

Synthetic origin

Made from petrochemical derivatives, which may be a concern for consumers seeking natural or eco-friendly ingredients.

pH sensitivity

Performance can drop in formulas that are very acidic or very alkaline, limiting its use in some specialty products.

Best for

  • Anyone who prefers lightweight, non-sticky textures
  • People with oily or combination skin who dislike heavy creams

Use caution if

  • Those seeking 100% natural or organic formulations

Usage tips

Use in water-based formulas at 0.5–1.5% for a medium gel texture.
Add slowly to water while mixing to avoid clumping.
Combine with other thickeners for customized viscosity.

Safety summary

Considered safe for topical use at typical concentrations. Low irritation and comedogenic potential. No significant safety concerns reported in cosmetic use.

Research notes

Widely used in cosmetics for decades with a strong safety record. Few peer-reviewed studies focus specifically on this polymer, but its safety is supported by industry consensus and regulatory approvals.

Common label clues

Typical concentration
0.1% to 2%
Regulatory status
Approved for use in cosmetics globally, including by the U.S. FDA and EU CosIng database.
Common uses
Gels, Serums, Creams, Lotions
Environmental note
As a synthetic polymer, it is not biodegradable. However, it is used in very low concentrations and is not known to accumulate in the environment.

Good to know

  • Often used in combination with other polymers to fine-tune texture.
  • Commonly found in gel cleansers, sheet mask serums, and lightweight moisturizers.

Common questions

What is Acrylates Crosspolymer Thickener in beauty products?

This ingredient is a synthetic powder that absorbs water and swells into a gel. It helps skincare products feel silky and spread easily without leaving a greasy or sticky residue. Think of it as a thickening agent that also keeps the product stable so it doesn't separate into oil and water layers.

What does Acrylates Crosspolymer Thickener do in a beauty product?

When added to water, the polymer chains absorb water and expand, creating a network that increases the viscosity (thickness) of the product. This network also helps suspend other ingredients and prevents oil and water from separating.

Is Acrylates Crosspolymer Thickener safe for most people?

Considered safe for topical use at typical concentrations. Low irritation and comedogenic potential. No significant safety concerns reported in cosmetic use.

Who should be careful with Acrylates Crosspolymer Thickener?

Those seeking 100% natural or organic formulations

Research sources

CosIng - European CommissionOpenPersonal Care Council - Safety AssessmentOpenPubMed - Polymer Safety in CosmeticsOpen

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.