Ingredient review

Acrylates/Dimethiconol Acrylate Copolymer

INCI: ACRYLATES/DIMETHICONOL ACRYLATE COPOLYMER

A safe, effective film-former that improves water resistance and wear time in cosmetics, but may feel heavy on some skin types.

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In plain English

This is a synthetic polymer made from acrylic and silicone building blocks. When applied, it dries down to form a thin, flexible, water-resistant film on skin or hair. Think of it like a clear, breathable raincoat — it helps makeup last longer, keeps sunscreen from washing off, and gives hair a smooth, styled hold without flaking. It's not absorbed into the skin, so it sits on the surface and can be washed off with soap and water.

Quick decision guide

Useful, but context matters

Acrylates/Dimethiconol 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 Acrylates/Dimethiconol 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 created by combining acrylate monomers with a silicone-based dimethiconol group. It is a high-molecular-weight ingredient that does not penetrate the skin.

How it works

After the water or solvent in a product evaporates, the copolymer molecules link together to form a continuous, flexible film on the surface. This film resists water and oil, helping active ingredients (like sunscreen filters) stay put and preventing makeup from smudging or fading. It also adds a silky, smooth feel and can thicken a formula.

Pros

Boosts water resistance

Helps sunscreen and makeup stay effective even when you sweat or get wet, so you don't have to reapply as often.

Creates a smooth finish

The film fills in fine lines and pores temporarily, giving skin a soft-focus, silky appearance that helps makeup glide on.

Cons and cautions

Can feel heavy

On oily or acne-prone skin, the film may feel sticky or occlusive, potentially contributing to clogged pores or a greasy sensation.

Requires thorough removal

Because it's water-resistant, a simple splash of water won't remove it. You'll likely need an oil-based cleanser or micellar water to break down the film.

Best for

  • People who want long-wearing, water-resistant makeup or sunscreen
  • Those with normal to dry skin looking for a smooth, protective film

Use caution if

  • Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming products

Usage tips

Use an oil-based cleanser or cleansing balm first to dissolve the film, then follow with a water-based cleanser.
If you have oily skin, look for formulas where this ingredient is listed lower on the ingredient list to minimize heaviness.
In hair products, apply to damp hair for even distribution and a flexible hold.

Safety summary

Acrylates/Dimethiconol Acrylate Copolymer is considered safe for topical use in cosmetics. It has low irritation and comedogenic potential, though individual reactions are possible. It is not absorbed through the skin and is generally well-tolerated.

Research notes

Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that acrylate copolymers are safe in current usage concentrations. Research focuses on their film-forming properties and environmental persistence, with no significant human health concerns reported.

Common label clues

Typical concentration
1% to 10%
Regulatory status
Approved for use in cosmetics in the US (FDA), EU (CosIng), and many other regions. No concentration limits are typically imposed, but manufacturers follow good formulation practices.
Common uses
Sunscreens, Long-wear foundations, Waterproof mascaras, Hair styling products, Moisturizers
Environmental note
As a synthetic silicone-acrylate polymer, it is not readily biodegradable. Some studies suggest it may persist in aquatic environments, so eco-conscious consumers may prefer products with biodegradable alternatives.

Good to know

  • This ingredient is often used in combination with other film-formers to fine-tune the feel and durability of a product.
  • It is considered safe by major regulatory bodies when used as intended in cosmetics.

Common questions

What is Acrylates/Dimethiconol Acrylate Copolymer in beauty products?

This is a synthetic polymer made from acrylic and silicone building blocks. When applied, it dries down to form a thin, flexible, water-resistant film on skin or hair. Think of it like a clear, breathable raincoat — it helps makeup last longer, keeps sunscreen from washing off, and gives hair a smooth, styled hold without flaking. It's not absorbed into the skin, so it sits on the surface and can be washed off with soap and water.

What does Acrylates/Dimethiconol Acrylate Copolymer do in a beauty product?

After the water or solvent in a product evaporates, the copolymer molecules link together to form a continuous, flexible film on the surface. This film resists water and oil, helping active ingredients (like sunscreen filters) stay put and preventing makeup from smudging or fading. It also adds a silky, smooth feel and can thicken a formula.

Is Acrylates/Dimethiconol Acrylate Copolymer safe for most people?

Acrylates/Dimethiconol Acrylate Copolymer is considered safe for topical use in cosmetics. It has low irritation and comedogenic potential, though individual reactions are possible. It is not absorbed through the skin and is generally well-tolerated.

Who should be careful with Acrylates/Dimethiconol Acrylate Copolymer?

Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming products

Research sources

Cosmetic Ingredient Review (CIR) – Safety Assessment of Acrylate CopolymersOpenPubChem – Acrylates/Dimethiconol Acrylate CopolymerOpenEuropean Chemicals Agency (ECHA) – Substance InformationOpen

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.