Ingredient review

Acrylates/Silicone Copolymer

INCI: ACRYLATES/STEARYL ACRYLATE/DIMETHICONE METHACRYLATE COPOLYMER

A synthetic film-former that helps products stay put and resist water, but may feel tight or heavy on some skin types.

beautyskincarefilm-former

In plain English

This ingredient is a type of plastic-like polymer that forms a thin, flexible film on your skin or hair. It's used in many long-wear and waterproof cosmetics to help them stay in place, resist sweat and humidity, and create a smooth, even surface. Think of it as a gentle, invisible glue that helps your makeup or sunscreen last longer without smudging.

Quick decision guide

Useful, but context matters

Acrylates/Silicone 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 Acrylates/Silicone 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 acrylic acid derivatives and a silicone-containing monomer. It's designed to create a flexible, water-resistant film on the skin or hair.

How it works

When applied, the polymer molecules link together to form a continuous, breathable film. This film helps other ingredients (like pigments or UV filters) adhere to the skin, reduces transfer, and provides a barrier against moisture loss or external elements.

Pros

Long-lasting wear

Helps makeup and sunscreen stay in place for hours, reducing the need for touch-ups.

Water and sweat resistant

Forms a protective film that resists moisture, making it ideal for active lifestyles or humid climates.

Cons and cautions

Can feel tight or heavy

On dry or sensitive skin, the film may create a noticeable tightness or a heavy, mask-like feel.

Requires thorough removal

Because it's water-resistant, it often needs an oil-based cleanser or double cleansing to fully remove, or it may clog pores.

Best for

  • People who want long-lasting, waterproof makeup or sunscreen
  • Those with oily or combination skin who need products that stay put

Use caution if

  • Individuals with very dry or dehydrated skin who prefer lightweight, breathable formulas

Usage tips

Use an oil-based cleanser or micellar water to remove products containing this polymer.
If you have dry skin, layer a hydrating serum or moisturizer underneath to minimize any tight feeling.
Shake or mix the product well before use, as the polymer can sometimes settle.

Safety summary

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. Some individuals may experience tightness or clogged pores if not properly removed.

Research notes

Safety data is based on industry assessments and regulatory reviews. No significant human or animal studies indicate toxicity at cosmetic use levels. The polymer is not absorbed through the skin.

Common label clues

Typical concentration
0.5–5% in most formulas
Regulatory status
Approved for use in cosmetics in the US (FDA), EU (CosIng), and other major markets. No known restrictions at typical use levels.
Common uses
Sunscreens, Long-wear foundations, Waterproof mascaras, Primers, Lip products
Environmental note
As a synthetic polymer, it is not biodegradable. However, it is used in small amounts and is not known to accumulate significantly in the environment.

Good to know

  • This ingredient is commonly found in 'long-wear' and 'waterproof' labeled products.
  • It is not a silicone oil (like dimethicone), but a polymer that contains a silicone component for flexibility.
  • It is considered safe for use in cosmetics by major regulatory bodies when used as directed.

Common questions

What is Acrylates/Silicone Copolymer in beauty products?

This ingredient is a type of plastic-like polymer that forms a thin, flexible film on your skin or hair. It's used in many long-wear and waterproof cosmetics to help them stay in place, resist sweat and humidity, and create a smooth, even surface. Think of it as a gentle, invisible glue that helps your makeup or sunscreen last longer without smudging.

What does Acrylates/Silicone Copolymer do in a beauty product?

When applied, the polymer molecules link together to form a continuous, breathable film. This film helps other ingredients (like pigments or UV filters) adhere to the skin, reduces transfer, and provides a barrier against moisture loss or external elements.

Is Acrylates/Silicone Copolymer safe for most people?

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. Some individuals may experience tightness or clogged pores if not properly removed.

Who should be careful with Acrylates/Silicone Copolymer?

Individuals with very dry or dehydrated skin who prefer lightweight, breathable formulas

Research sources

CosIng - European Commission ingredient databaseOpenPersonal Care Council - Safety Assessment of Acrylates CopolymersOpenPubMed - Review 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.