Ingredient review
Acrylate/Dimethicone Copolymer
INCI: C8-22 ALKYL ACRYLATE/BUTYL DIMETHICONE METHACRYLATE COPOLYMER
A safe, synthetic film-former that helps makeup last longer and feel smoother without clogging pores.
In plain English
This ingredient is a plastic-like polymer combined with silicone. When applied to skin, it dries down to form a flexible, invisible film that helps makeup stay put, resists water and sweat, and gives a silky, non-greasy feel. Think of it as a gentle 'glue' that holds your foundation or sunscreen in place without feeling heavy or sticky.
Review score
Safety, usefulness, and evidence
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
Quick decision guide
Useful, but context matters
Acrylate/Dimethicone 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Acrylate/Dimethicone Copolymer.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere 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-based methacrylate. It is designed to combine the film-forming strength of acrylates with the smooth, flexible feel of silicones.
How it works
After the product is applied and the solvent (water or alcohol) evaporates, the copolymer molecules link together into a thin, continuous film on the skin. This film physically locks in pigments and active ingredients, reduces transfer to clothing or masks, and creates a barrier that slows water loss from the skin.
Pros
Boosts wear time
Creates a flexible film that helps makeup resist smudging, fading, and transferring onto masks or clothes for hours.
Non-comedogenic
Despite being a film-former, it has a low comedogenic rating and is unlikely to clog pores or cause breakouts for most skin types.
Cons and cautions
Synthetic origin
It is a lab-made polymer, which may not align with preferences for naturally derived or 'clean' ingredient lists.
Can feel drying
On very dry or dehydrated skin, the film can create a slight tightening sensation, so pairing with a hydrating moisturizer underneath is recommended.
Best for
- Anyone wanting long-wearing foundation or waterproof mascara
- People with oily or combination skin who struggle with makeup fading
Use caution if
- Those who prefer 100% natural or silicone-free routines
- Individuals with very dry or dehydrated skin who dislike any film-forming feel
Usage tips
Safety summary
Extensively reviewed and considered safe for topical cosmetic use. Low irritation and allergy potential. Not a known endocrine disruptor. Avoid eye contact in its raw form.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that acrylate copolymers are safe as used in cosmetics. No significant human or animal toxicity concerns have been identified at typical exposure 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 concentration restrictions.
- Common uses
- Long-wear foundations, Waterproof mascaras, Sunscreens, Lip products, Primers
- Environmental note
- As a synthetic silicone-modified polymer, it may not be biodegradable. However, it is used in low concentrations and is not known to accumulate in the environment.
Good to know
- This ingredient is often used in 'transfer-proof' and 'waterproof' formulas.
- It is considered safe by major cosmetic safety panels at typical use levels.
Common questions
What is Acrylate/Dimethicone Copolymer in beauty products?
This ingredient is a plastic-like polymer combined with silicone. When applied to skin, it dries down to form a flexible, invisible film that helps makeup stay put, resists water and sweat, and gives a silky, non-greasy feel. Think of it as a gentle 'glue' that holds your foundation or sunscreen in place without feeling heavy or sticky.
What does Acrylate/Dimethicone Copolymer do in a beauty product?
After the product is applied and the solvent (water or alcohol) evaporates, the copolymer molecules link together into a thin, continuous film on the skin. This film physically locks in pigments and active ingredients, reduces transfer to clothing or masks, and creates a barrier that slows water loss from the skin.
Is Acrylate/Dimethicone Copolymer safe for most people?
Extensively reviewed and considered safe for topical cosmetic use. Low irritation and allergy potential. Not a known endocrine disruptor. Avoid eye contact in its raw form.
Who should be careful with Acrylate/Dimethicone Copolymer?
Those who prefer 100% natural or silicone-free routines Individuals with very dry or dehydrated skin who dislike any film-forming feel
Research sources
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.