Ingredient review
Acrylate Copolymer Film Former
INCI: BIS-PENTAERYTHRITYL TRIACRYLATE POLY(1,4-BUTANEDIOL)-9/GLYCOL/IPDI COPOLYMER
A synthetic film former that helps makeup stay put, but offers no skincare benefit and may feel tight on dry skin.
In plain English
This ingredient is a man-made polymer that dries down to form a thin, flexible film on your skin or nails. Think of it like a clear, invisible glove that helps makeup resist water, sweat, and smudging. It's commonly found in long-wear lipsticks, waterproof eyeliners, and nail polishes. While it's generally safe and non-irritating, it doesn't hydrate or treat your skin—it's purely a cosmetic helper.
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 Copolymer Film Former 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 Copolymer Film Former.
- 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 created by reacting bis-pentaerythrityl triacrylate with poly(1,4-butanediol)-9, glycol, and IPDI (isophorone diisocyanate). It belongs to the acrylate family of film-forming agents.
How it works
When applied, the solvent in the product evaporates, leaving behind a continuous polymer film that adheres to the skin or nail surface. This film is flexible enough to move with your skin without cracking, yet strong enough to resist water and oil, extending the wear time of the cosmetic.
Pros
Excellent wear time
Helps lipsticks, eyeliners, and foundations last through meals, sweat, and humidity without smudging or fading.
Flexible film
Unlike some older film formers, this copolymer creates a pliable layer that moves with your skin, reducing the chance of cracking or flaking.
Cons and cautions
No skincare benefit
This ingredient is purely cosmetic—it won't hydrate, soothe, or improve your skin's health over time.
Can feel tight
On very dry or sensitive skin, the film may create a slight tightening sensation, especially in matte lipsticks or setting sprays.
Best for
- Anyone wanting long-lasting, waterproof makeup
- People with oily skin who struggle with makeup fading
Use caution if
- Those with very dry or dehydrated skin who prefer hydrating formulas
Usage tips
Safety summary
Considered safe for topical cosmetic use at typical concentrations. Low irritation and comedogenic risk. No known systemic toxicity concerns from normal use.
Research notes
Acrylate copolymers have a long history of safe use in cosmetics. Studies focus on film-forming performance rather than skin interaction. No significant safety flags have been raised by regulatory bodies.
Common label clues
- Typical concentration
- 1–10% in most formulas
- Regulatory status
- Approved for use in cosmetics in the US, EU, and most major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Long-wear lipsticks, Waterproof eyeliners, Nail polishes, Setting sprays
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in low concentrations and is not classified as a microplastic under current regulatory definitions.
Good to know
- This ingredient is often listed under various acrylate copolymer names—check the full INCI if you're avoiding specific polymers.
- It is not considered a microplastic because the polymer film is designed to stay intact and not break into tiny particles.
Common questions
What is Acrylate Copolymer Film Former in beauty products?
This ingredient is a man-made polymer that dries down to form a thin, flexible film on your skin or nails. Think of it like a clear, invisible glove that helps makeup resist water, sweat, and smudging. It's commonly found in long-wear lipsticks, waterproof eyeliners, and nail polishes. While it's generally safe and non-irritating, it doesn't hydrate or treat your skin—it's purely a cosmetic helper.
What does Acrylate Copolymer Film Former do in a beauty product?
When applied, the solvent in the product evaporates, leaving behind a continuous polymer film that adheres to the skin or nail surface. This film is flexible enough to move with your skin without cracking, yet strong enough to resist water and oil, extending the wear time of the cosmetic.
Is Acrylate Copolymer Film Former safe for most people?
Considered safe for topical cosmetic use at typical concentrations. Low irritation and comedogenic risk. No known systemic toxicity concerns from normal use.
Who should be careful with Acrylate Copolymer Film Former?
Those with very dry or dehydrated skin who prefer hydrating formulas
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.