Ingredient review

Acrylamide/Ammonium Acrylate Copolymer

INCI: ACRYLAMIDE/AMMONIUM ACRYLATE COPOLYMER

A synthetic polymer that helps products spread smoothly and stay put, but its acrylamide content raises minor purity concerns.

beautyskincaretexturizer

In plain English

This is a man-made ingredient that helps lotions and creams feel silky and spread evenly. It also forms a thin, invisible film on your skin or hair, which can help other ingredients stay in place longer or provide light water resistance. Think of it like a gentle glue that holds the product together without feeling sticky.

Quick decision guide

Useful, but context matters

Acrylamide/Ammonium Acrylate 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Acrylamide/Ammonium Acrylate Copolymer.
  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 synthetic copolymer made from acrylamide and ammonium acrylate monomers, designed to thicken formulas and create a flexible film on skin or hair.

How it works

When applied, the polymer chains spread out and link together, forming a thin, breathable film. This film helps lock in moisture, smooth the skin's surface, and improve the wear time of makeup or sunscreen. It also increases the viscosity of a product, giving it a richer, more luxurious feel.

Pros

Enhances product feel

Creates a smooth, silky texture that makes creams and lotions easier to apply and more pleasant to use.

Boosts wear time

Forms a flexible film that helps makeup and sunscreen stay in place longer, even in humidity or water exposure.

Cons and cautions

Purity concerns

The manufacturing process can leave trace amounts of acrylamide, a substance of concern. However, cosmetic-grade versions are purified to meet strict safety limits.

Environmental footprint

As a synthetic polymer, it is not readily biodegradable and may contribute to microplastic pollution over time.

Best for

  • People who want long-wearing makeup or water-resistant sunscreen
  • Those who prefer a silky, non-sticky texture in moisturizers

Use caution if

  • Individuals with known sensitivity to acrylamide or synthetic polymers (rare)

Usage tips

Use products with this ingredient as directed; avoid over-application to prevent a heavy film feel.
Pair with water-based serums for best layering results under makeup or sunscreen.

Safety summary

Generally recognized as safe for topical use at typical concentrations. Regulatory bodies strictly limit residual acrylamide to very low levels. No significant irritation or allergy concerns for most people.

Research notes

Studies confirm its effectiveness as a film former and thickener. Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded it is safe when formulated to meet purity standards.

Common label clues

Typical concentration
0.1% to 5%
Regulatory status
Approved for use in cosmetics globally. In the EU and US, residual acrylamide is limited to 0.1 ppm (parts per million) in leave-on products.
Common uses
Moisturizers, Sunscreens, Makeup primers, Hair styling products
Environmental note
As a synthetic polymer, it is not biodegradable. Some manufacturers are developing bio-based alternatives to reduce environmental impact.

Good to know

  • This ingredient is often listed near the end of an ingredient list, indicating a low concentration.
  • It is commonly used in 'water-resistant' sunscreens to help the formula stay effective during swimming or sweating.

Common questions

What is Acrylamide/Ammonium Acrylate Copolymer in beauty products?

This is a man-made ingredient that helps lotions and creams feel silky and spread evenly. It also forms a thin, invisible film on your skin or hair, which can help other ingredients stay in place longer or provide light water resistance. Think of it like a gentle glue that holds the product together without feeling sticky.

What does Acrylamide/Ammonium Acrylate Copolymer do in a beauty product?

When applied, the polymer chains spread out and link together, forming a thin, breathable film. This film helps lock in moisture, smooth the skin's surface, and improve the wear time of makeup or sunscreen. It also increases the viscosity of a product, giving it a richer, more luxurious feel.

Is Acrylamide/Ammonium Acrylate Copolymer safe for most people?

Generally recognized as safe for topical use at typical concentrations. Regulatory bodies strictly limit residual acrylamide to very low levels. No significant irritation or allergy concerns for most people.

Who should be careful with Acrylamide/Ammonium Acrylate Copolymer?

Individuals with known sensitivity to acrylamide or synthetic polymers (rare)

Research sources

Cosmetic Ingredient Review (CIR) – Safety AssessmentOpenEuropean Chemicals Agency (ECHA) – Acrylamide restrictionsOpenPubMed – Film-forming polymers 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.