Ingredient review
Perfluoroalkyl Acrylate Copolymer
INCI: Butyl Acrylate/C6-14 Perfluoroalkylethyl Acrylate/Mercaptopropyl Dimethicone Copolymer
A synthetic film former that helps makeup and sunscreen resist water and last longer, but raises environmental concerns due to its perfluoroalkyl structure.
In plain English
This is a man-made polymer that forms a flexible, water-resistant film on skin or lashes. Think of it like a clear, invisible raincoat for your makeup. It helps products stay put through sweat, humidity, and tears. The 'perfluoroalkyl' part means it contains fluorine-carbon bonds, which are very stable and repel both water and oil. However, these same bonds are linked to environmental persistence concerns.
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
Perfluoroalkyl 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Perfluoroalkyl Acrylate 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 three monomers: butyl acrylate (a common film former), a perfluoroalkyl acrylate (provides water and oil repellency), and a silicone-containing monomer (adds flexibility and spreadability). It is a high-performance ingredient designed for extreme durability.
How it works
When the product dries, the copolymer molecules link together to form a continuous, flexible film on the skin or hair. The perfluoroalkyl segments orient toward the surface, creating a low-energy barrier that water and oil droplets cannot easily wet or penetrate. This film also helps lock in pigments and active ingredients.
Pros
Exceptional water resistance
The perfluoroalkyl component makes this copolymer extremely effective at repelling water and oil, so your makeup stays put through sweat, rain, and tears.
Flexible, non-cracking film
Unlike some older film formers, this copolymer includes a silicone segment that keeps the film flexible, preventing the tight, cracking feeling on skin or lashes.
Cons and cautions
Environmental persistence concerns
Perfluoroalkyl substances are known as 'forever chemicals' because they break down very slowly in the environment. Their production and disposal raise ecological concerns.
Requires thorough removal
Because it forms such a strong water-resistant film, this ingredient can be stubborn to remove. You may need an oil-based cleanser or a double-cleansing routine to avoid residue.
Best for
- People who need waterproof or long-wear makeup for events, swimming, or humid climates
- Those with oily skin who struggle with makeup sliding off
Use caution if
- Individuals concerned about PFAS environmental impact or seeking fully biodegradable products
Usage tips
Safety summary
Generally considered safe for topical use at typical concentrations based on current data, but the broader PFAS class is under review due to environmental persistence and potential long-term health effects. The risk from occasional cosmetic use is likely low, but consumers concerned about PFAS may choose to avoid it.
Research notes
Studies confirm the film-forming and water-repellent properties of perfluoroalkyl acrylate copolymers. Safety assessments by the Cosmetic Ingredient Review (CIR) have found similar PFAS ingredients safe for use, but recent regulatory attention focuses on environmental and bioaccumulation concerns.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US and EU, but the EU is considering stricter limits on PFAS in cosmetics. Some US states (e.g., California, Maine) have introduced bills to restrict PFAS in beauty products.
- Common uses
- Long-wear foundations, Waterproof mascaras, Sunscreens, Lip products
- Environmental note
- Perfluoroalkyl compounds are highly persistent in the environment and can accumulate in living organisms. Their production and disposal contribute to long-term pollution.
Good to know
- This ingredient is part of a broader class of PFAS (per- and polyfluoroalkyl substances) that are under increasing regulatory scrutiny in cosmetics.
- It is often found in 'waterproof' or '24-hour wear' products, so check labels if you prefer PFAS-free options.
Common questions
What is Perfluoroalkyl Acrylate Copolymer in beauty products?
This is a man-made polymer that forms a flexible, water-resistant film on skin or lashes. Think of it like a clear, invisible raincoat for your makeup. It helps products stay put through sweat, humidity, and tears. The 'perfluoroalkyl' part means it contains fluorine-carbon bonds, which are very stable and repel both water and oil. However, these same bonds are linked to environmental persistence concerns.
What does Perfluoroalkyl Acrylate Copolymer do in a beauty product?
When the product dries, the copolymer molecules link together to form a continuous, flexible film on the skin or hair. The perfluoroalkyl segments orient toward the surface, creating a low-energy barrier that water and oil droplets cannot easily wet or penetrate. This film also helps lock in pigments and active ingredients.
Is Perfluoroalkyl Acrylate Copolymer safe for most people?
Generally considered safe for topical use at typical concentrations based on current data, but the broader PFAS class is under review due to environmental persistence and potential long-term health effects. The risk from occasional cosmetic use is likely low, but consumers concerned about PFAS may choose to avoid it.
Who should be careful with Perfluoroalkyl Acrylate Copolymer?
Individuals concerned about PFAS environmental impact or seeking fully biodegradable products
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.