Ingredient review

Aminoethylacrylate Phosphate/Acrylates Copolymer

INCI: AMINOETHYLACRYLATE PHOSPHATE/ACRYLATES COPOLYMER

A safe, synthetic film-former that improves water resistance and wear time without clogging pores.

beautyskincarefilm-former

In plain English

This ingredient is a type of plastic-like polymer that forms a thin, flexible film on your skin. It helps other ingredients stick around longer, so your sunscreen stays effective after swimming or sweating, and your makeup doesn't slide off. It's not absorbed into the skin—it sits on the surface and washes off with cleanser.

Quick decision guide

Useful, but context matters

Aminoethylacrylate Phosphate/Acrylates 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 Aminoethylacrylate Phosphate/Acrylates 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 aminoethylacrylate phosphate and acrylate monomers, designed to create a flexible, water-resistant film on the skin.

How it works

When applied, the polymer chains spread out and link together as the water or solvent evaporates, forming a continuous, breathable film. This film helps lock in other ingredients and resists being washed away by water or sweat.

Pros

Boosts water resistance

Helps sunscreens and makeup stay effective even when you sweat or go swimming, so you don't have to reapply as often.

Lightweight feel

Creates a thin, flexible film that doesn't feel heavy or sticky, making it comfortable for daily wear under makeup or alone.

Cons and cautions

Synthetic origin

Made from petroleum-based materials, which may not appeal to those seeking natural or biodegradable ingredients.

Potential tightness on dry skin

The film can feel slightly tightening or drying if your skin is already very dry or compromised, though this is rare.

Best for

  • Anyone wanting longer-lasting sunscreen or makeup
  • People with oily or combination skin who prefer a matte finish

Use caution if

  • Those with extremely dry or compromised skin barriers who may find film-formers too occlusive

Usage tips

Apply to damp skin for a more even spread and less chance of pilling.
Use a gentle oil-based cleanser or micellar water to fully remove products containing this polymer at the end of the day.

Safety summary

Considered safe for cosmetic use at typical concentrations. Low irritation and comedogenic risk. Not absorbed into the skin. Safe for most skin types, including sensitive skin.

Research notes

Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that acrylate copolymers are safe when formulated properly. No significant human or environmental toxicity has been reported at cosmetic use levels.

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics globally, including by the U.S. FDA and EU CosIng database, with no known restrictions at typical concentrations.
Common uses
Sunscreens, Makeup primers, Foundations, Setting sprays, Water-resistant lotions
Environmental note
As a synthetic polymer, it is not biodegradable. However, it is used in low concentrations and is removed during wastewater treatment.

Good to know

  • This ingredient is commonly found in 'water-resistant' sunscreens and long-wear foundations.
  • It is not absorbed into the skin and is considered safe for topical use by cosmetic safety panels.

Common questions

What is Aminoethylacrylate Phosphate/Acrylates Copolymer in beauty products?

This ingredient is a type of plastic-like polymer that forms a thin, flexible film on your skin. It helps other ingredients stick around longer, so your sunscreen stays effective after swimming or sweating, and your makeup doesn't slide off. It's not absorbed into the skin—it sits on the surface and washes off with cleanser.

What does Aminoethylacrylate Phosphate/Acrylates Copolymer do in a beauty product?

When applied, the polymer chains spread out and link together as the water or solvent evaporates, forming a continuous, breathable film. This film helps lock in other ingredients and resists being washed away by water or sweat.

Is Aminoethylacrylate Phosphate/Acrylates Copolymer safe for most people?

Considered safe for cosmetic use at typical concentrations. Low irritation and comedogenic risk. Not absorbed into the skin. Safe for most skin types, including sensitive skin.

Who should be careful with Aminoethylacrylate Phosphate/Acrylates Copolymer?

Those with extremely dry or compromised skin barriers who may find film-formers too occlusive

Research sources

Cosmetic Ingredient Review (CIR) - Acrylates Copolymer SafetyOpenEU CosIng Database - Aminoethylacrylate Phosphate/Acrylates CopolymerOpenPubMed - Safety of 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.