Chemical Snapshot: What You Need to Know
- PFAS (per- and polyfluoroalkyl substances) are found in food packaging across major UK supermarkets and takeaway chains, with one study finding them in 8 out of 9 major UK supermarkets and 100% of takeaways tested.
- These chemicals migrate directly into food — particularly fatty foods — meaning every bite from a PFAS-lined wrapper is a potential exposure point.
- When PFAS-laden packaging is discarded, it doesn't disappear. It leaches into soil and water from landfills, creating contamination that can persist for centuries.
- Major retailers representing over 150,000 stores and $654 billion in combined sales have made commitments to eliminate or reduce PFAS in packaging — but progress is uneven.
- PFAS-free alternatives already exist and are readily available, which raises an uncomfortable question: why are so many retailers still dragging their feet?
Your takeaway container might be doing more than just holding your lunch. Fidra, an environmental organisation based in the UK, has put together a comprehensive resource on PFAS in food packaging that lays out exactly how widespread this problem is — and why it matters for every consumer who eats food that comes in a wrapper, box, or bag.
Retailers Are Still Packaging Food With Forever Chemicals
Around 30% of food packaging tested in a major UK study was found likely to contain PFAS. That's not a fringe finding from a niche lab — it's a result pulled from mainstream supermarket shelves and everyday takeaway outlets. The scale of the problem is hiding in plain sight, tucked inside the grease-resistant coating on your burger wrapper or the lining of your microwave popcorn bag.
PFAS (per- and polyfluoroalkyl substances) are a family of more than 4,700 synthetic chemicals engineered to resist heat, water, and grease. Those properties make them incredibly useful for food packaging manufacturers — and incredibly difficult to remove from the environment once they get in. The name “forever chemicals” isn't marketing language. It's a reference to the fact that PFAS do not break down naturally, in the environment or in your body.
- Fast food wrappers — grease-resistant coatings are a primary use case
- Microwave popcorn bags — heat resistance requires heavy chemical treatment
- Butter and dairy wrappers — direct contact with fatty foods accelerates PFAS migration
- Greaseproof cake liners — used in both retail and home baking products
- Paper bags for dry goods — even lower-risk packaging can contain PFAS at background levels
- Moulded fibre containers — a common “eco-friendly” option that often still contains PFAS
What makes this particularly frustrating is that alternatives exist. PFAS-free packaging options are already on the market, already being used by forward-thinking retailers, and already proven effective. The issue isn't technological — it's a matter of will, policy, and consumer pressure.
What PFAS Are and Why They End Up in Food Packaging
PFAS are primarily added to cardboard and paper packaging for one reason: to stop grease and moisture from breaking down the material. A burger wrapper without a PFAS coating becomes a soggy mess within minutes. Manufacturers use these chemicals because they work exceptionally well — a thin coating can repel oil and water while keeping the packaging structurally intact. The problem is that the same chemical bonds that make PFAS so effective also make them essentially indestructible in natural environments.
Which Food Packaging Products Most Commonly Contain PFAS
Grease-resistant paper and paperboard products are the highest-risk category. This includes fast food wrappers, microwave bags, and baking liners — essentially any paper-based packaging that needs to hold up against oil or moisture. Moulded fibre products, often marketed as compostable or eco-friendly alternatives to plastic, have also been found to contain PFAS, which creates a false sense of security for environmentally conscious consumers. Even packaging for dry foods can carry background contamination levels of PFAS, though intentionally added PFAS is most concentrated in grease-barrier applications.
Why PFAS in Food Packaging Is a Serious Problem
The health and environmental risks attached to PFAS exposure are well-documented and serious. These aren't theoretical concerns being debated in academic circles — regulatory agencies and independent researchers across multiple countries have linked PFAS exposure to a range of significant health outcomes. The issue is compounded by the fact that PFAS accumulate in the body over time, meaning repeated small exposures from everyday food packaging add up.
How PFAS From Packaging Enter the Human Body
PFAS migrate from packaging into food — and the rate of migration increases significantly with fatty foods. Research has confirmed that people who eat more food packaged in PFAS-containing materials have measurably higher levels of these chemicals in their blood. This isn't a slow, passive process. Contact between a PFAS-coated surface and an oily or fatty food accelerates transfer, meaning a greasy slice of pizza in a treated box or buttered popcorn in a lined bag represents a direct and meaningful exposure event.
The migration pathway is straightforward: PFAS coating contacts food, chemicals transfer during storage or heating, food is consumed, and PFAS accumulate in body tissue. There is no safe threshold officially established for many PFAS compounds, and because they don't metabolize normally, each exposure builds on the last.
What PFAS Contamination Does to the Environment
When PFAS-containing packaging enters a landfill, the chemicals don't stay in the packaging. They leach into surrounding soil and groundwater, contaminating water supplies that can stretch far beyond the original disposal site. PFAS have been detected in drinking water sources, agricultural soil, and even remote ecosystems with no direct industrial connection — carried there through water systems and atmospheric deposition.
Why “Single-Use” Packaging Creates a Permanent Chemical Problem
There's a fundamental mismatch at the heart of this issue. A PFAS-coated food wrapper might be used for five minutes before being thrown away. But the chemicals it contains will persist in the environment for centuries. Single-use packaging is, by design, disposed of almost immediately — which means PFAS from food packaging are being continuously deposited into landfills, composting streams, and recycling systems at massive scale. Compostable packaging that contains PFAS is particularly problematic, as the composting process breaks down the packaging material but leaves the PFAS behind, contaminating the resulting compost and, subsequently, the agricultural land it's applied to.
32 Retail Chains Have Committed to Phasing Out PFAS
The good news is that the retail sector is starting to move — just not fast enough, and not comprehensively enough. Retailers representing more than 150,000 store locations and over $654 billion in combined annual sales have made formal commitments to eliminate or reduce PFAS in food packaging, textiles, or other products. That's a meaningful shift in market direction, driven by a combination of regulatory pressure, consumer advocacy, and reputational risk.
McDonald's announced a global ban on PFAS in food packaging, joining a growing list of major food service and grocery brands making public commitments. Six additional retailers with more than 13,000 combined locations and over $47 billion in annual sales have pledged to reduce or eliminate PFAS from their packaging specifically. These aren't small players making symbolic gestures — these are companies with enough supply chain leverage to drive real industry-wide change when they decide to act.
But commitments are not the same as completion. The gap between a retailer announcing a PFAS phase-out and actually removing PFAS from every product in their packaging supply chain is significant. Timelines vary, verification is inconsistent, and not every commitment covers every category of packaging. Consumers and advocacy organisations continue to push for faster, more transparent, and more comprehensive action.
Which Major Grocery Chains Have Banned PFAS From Food Packaging
McDonald's made headlines with its global PFAS ban across food packaging — one of the most visible corporate commitments in the space. In the UK, three major supermarkets responded directly to a petition carrying nearly 12,000 signatures by committing to phase PFAS out of their own-brand food packaging. Amazon, Lowe's, and a growing list of major grocery and fast-casual chains have adopted formal PFAS elimination policies. Toxic-Free Future's campaign reports, including Packaged in Pollution (2020), documented PFAS presence in fast food and fast-casual packaging and helped apply the consumer pressure that pushed several of these commitments forward.
How Much of the Retail Market Has Actually Made the Switch
Despite high-profile commitments, full market adoption remains a work in progress. Retailers representing enormous combined sales figures have pledged action, but pledges and verified phase-outs are two different things. Many commitments cover only own-brand packaging, leaving branded products on shelves untouched by the policy. Third-party verification of PFAS elimination is still inconsistent across the industry, and timelines for full compliance stretch years into the future for some retailers. The gap between announced intention and actual shelf-level change is where consumer advocacy organisations continue to focus their pressure.
PFAS-Free Packaging Alternatives Already Exist
- Uncoated paper and paperboard — suitable for many dry food applications where grease resistance isn't critical
- Silicone-coated paper — provides grease and moisture resistance without PFAS chemistry
- Wax-coated paper — a traditional, widely available alternative for wrapping fatty foods
- Aluminium foil laminates — effective barrier packaging without fluorinated chemistry
- Verified PFAS-free moulded fibre — available from suppliers who have eliminated fluorinated water-proofing treatments
- Bioplastic liners — used in some food service applications as a PFAS-free moisture barrier
The existence of these alternatives fundamentally changes the conversation. This is not a situation where industry is waiting on a technological breakthrough — PFAS-free food packaging is already being manufactured, already being used by leading retailers, and already proven effective in real-world food service conditions. Toxic-Free Future has published a comprehensive list of PFAS-free food packaging alternatives that shows just how many viable options are currently available to procurement teams making sourcing decisions today.
The performance argument that once justified PFAS use is increasingly hard to defend. Silicone-coated and wax-coated papers handle grease resistance effectively. Verified PFAS-free moulded fibre products are already in use at scale. The cost differential between PFAS-containing and PFAS-free options continues to narrow as demand for safer alternatives grows and supply chains mature. For large retailers with significant purchasing power, the transition cost is manageable — particularly when weighed against the regulatory and reputational risk of continuing to use chemicals under growing public and legislative scrutiny.
What's slowing adoption isn't availability or performance — it's inertia, existing supplier relationships, and in some cases a lack of urgency from leadership that hasn't yet felt sufficient pressure from regulators or consumers. That equation is shifting, but not as fast as the science on PFAS health risks would suggest it should.
How Global Regulation on PFAS Packaging Is Changing
Regulatory momentum around PFAS in food packaging has been building steadily, with some jurisdictions moving from guidance to hard law. The direction of travel is clear: PFAS in food contact materials is increasingly treated as an unacceptable risk, not a manageable one. Countries and trading blocs that have moved first are already seeing market responses from retailers and manufacturers operating within their borders — and those market changes are beginning to ripple into global supply chains.
What the EU and Denmark Have Already Done
Denmark was among the first countries in the world to implement a national ban on PFAS in food contact paper and board, a move that demonstrated both the political will and the practical feasibility of PFAS-free packaging at national scale. The European Union has been moving toward a broader restriction on PFAS across multiple product categories under its chemicals strategy, with food contact materials identified as a priority area. These regulatory actions have effectively set a new baseline expectation for packaging manufacturers supplying the European market, and the effect on global supply chains — particularly for multinational retailers — is already being felt.
Where UK Regulation Currently Stands
Post-Brexit, the UK has maintained some alignment with EU chemicals policy but has moved more slowly on PFAS-specific restrictions for food packaging. Advocacy organisations including Fidra and CHEMTrust have been actively pushing UK regulators and major supermarket CEOs to accelerate action, including a petition delivered to nine major supermarket chains in 2021. The UK regulatory position remains a work in progress, with NGO pressure and voluntary retailer commitments currently doing more of the heavy lifting than binding legislation. That gap between voluntary action and legal requirement is exactly the kind of space where consumer pressure matters most.
How to Avoid PFAS in Food Packaging as a Consumer
You can't always know with certainty which packaging contains PFAS — manufacturers aren't required to label it. But there are practical steps that meaningfully reduce your exposure and shift purchasing power toward retailers who have made verified commitments to PFAS-free packaging.
1. Check for Grease-Resistant Coatings on Paper Packaging
Any paper or cardboard packaging that resists grease or moisture is a candidate for PFAS treatment. Fast food wrappers, microwave popcorn bags, pizza boxes, butter wrappers, and baking liners are the highest-risk categories. When a paper product repels oil visibly — water or grease beading on the surface rather than soaking in — that's a functional indicator of a water- and grease-resistant coating, which may be PFAS-based. Choosing retailers or brands that have made verified PFAS-free commitments for these specific product categories is the most reliable way to reduce exposure. For more information, you can explore environmental impact assessments to understand the broader implications of PFAS usage.
2. Use the Bead Test as a Quick Indicator at Home
Fidra developed and popularised the bead test as a preliminary screening method for PFAS in food packaging. The principle is straightforward: place a few drops of water on the paper or cardboard surface. If the water beads up and rolls off rather than absorbing into the material, the packaging has been treated with a water-resistant substance — which could be PFAS, though not exclusively. The bead test is not a definitive chemical analysis, but it's a useful first-pass indicator that has been widely adopted by researchers and consumer advocates as a practical field tool.
Used alongside retailer commitment research, the bead test gives consumers a simple, zero-cost way to identify packaging that warrants closer scrutiny. If water beads on your takeaway container or fast food wrapper, that packaging is doing exactly what PFAS was designed to make it do — and that's worth factoring into your purchasing decisions going forward.
3. Prioritise Retailers With Verified PFAS-Free Commitments
Not all retailer commitments are equal. A pledge to “investigate PFAS” is meaningfully different from a verified, time-bound commitment to eliminate PFAS from all food contact packaging. When choosing where to shop, look for retailers who have gone on record with specific phase-out timelines, cover both own-brand and branded products, and have engaged with third-party verification. Fidra and Toxic-Free Future both maintain updated information on which retailers have made substantive commitments versus vague statements of intent.
In the UK, three major supermarkets made formal commitments following the 2021 petition campaign. In the US, retailers including Amazon, McDonald's, and several fast-casual chains have adopted formal PFAS elimination policies. Choosing to spend your money with retailers who have made and followed through on these commitments sends a direct market signal — and shifts revenue away from brands that haven't acted.
If you're unsure where a retailer stands, their sustainability or packaging policy page is the first place to check. Look specifically for language around PFAS, per- and polyfluoroalkyl substances, or fluorinated chemicals in food contact materials. Generic “sustainability” language without specific chemical commitments is not the same as a PFAS phase-out — and the distinction matters.
4. Avoid Microwaveable Bags and Fast Food Wrappers Where Possible
Microwave popcorn bags and fast food wrappers are two of the highest-risk PFAS exposure categories for consumers. Both involve paper-based packaging that requires significant grease and moisture resistance, both involve heat — which accelerates PFAS migration into food — and both are used in direct, sustained contact with fatty food products. Reducing how often you use these specific packaging types is one of the most targeted exposure-reduction steps available to consumers right now.
Switching microwave popcorn bags for stovetop or air-popped alternatives eliminates the packaging contact entirely. Choosing fast food restaurants that have made verified PFAS-free packaging commitments, or transferring food to a non-coated plate or container immediately on receipt, meaningfully reduces contact time between PFAS-treated packaging and your food. These aren't dramatic lifestyle changes — they're small, practical adjustments that reduce cumulative exposure over time.
Butter wrappers and greaseproof baking liners are worth flagging too. Standard greaseproof paper sold for home baking, and the waxed or treated paper wrapped around butter and margarine products, can both contain PFAS. Silicone baking mats are a straightforward PFAS-free alternative to greaseproof liners, and several brands now produce verified PFAS-free butter and dairy wrappers. The alternatives exist — it's a matter of knowing where to look.
PFAS Will Stay in Our Food Chain Until Retailers Are Forced to Act
The evidence is clear: PFAS-free packaging works, alternatives are available, and the health and environmental costs of continuing to use forever chemicals in single-use food packaging are well-documented and serious. What's missing is universal, binding pressure that removes the option of inaction. Voluntary commitments have moved the market, but they've also left enormous gaps — in product coverage, in timelines, and in verification. Until regulation catches up with the science, consumer pressure and informed purchasing decisions remain the most immediate levers available.
The 12,000 signatures delivered to UK supermarket CEOs in 2021 produced real, named commitments from three major chains. Market pressure works when it's sustained and specific. Supporting advocacy organisations tracking PFAS in packaging, choosing retailers who have acted, and continuing to push for binding legislation in the UK and beyond are the practical actions that will ultimately close the gap between where the industry is now and where the science says it needs to be.
Frequently Asked Questions
PFAS in food packaging raises a lot of specific, practical questions — here are the most important ones answered clearly, based on what the current research actually shows.
- PFAS stands for per- and polyfluoroalkyl substances — a group of over 4,700 synthetic chemicals
- They are used in food packaging primarily to resist grease and moisture
- They are called “forever chemicals” because they do not break down in nature or in the human body
- Exposure occurs through direct food contact migration, particularly with fatty foods
- PFAS-free alternatives are already commercially available across all major food packaging categories
The questions consumers ask most often centre on exposure risk, the effectiveness of alternatives, and what regulatory protections are actually in place right now. The honest answer across most of these questions is that the protections are still catching up to the problem — which is exactly why consumer awareness matters so much in the interim.
Are all food packaging materials likely to contain PFAS?
No — not all food packaging contains PFAS, but paper and cardboard packaging that resists grease or moisture is the highest-risk category. Glass, stainless steel, and untreated paper products are not PFAS sources. Around 30% of food packaging sampled in UK supermarket testing was found likely to contain PFAS, with fast food wrappers, microwave bags, and moulded fibre containers representing the categories of greatest concern. Plastic packaging is generally not a PFAS source, though it carries its own set of chemical concerns separate from this issue.
Is PFAS-free packaging as effective at resisting grease and moisture?
Yes — PFAS-free alternatives have been demonstrated to perform effectively across real-world food service applications. The argument that PFAS is irreplaceable in food packaging is no longer supported by market evidence. Retailers and food service operators who have completed PFAS transitions report that alternatives including silicone-coated papers, wax-coated boards, and verified PFAS-free moulded fibre perform adequately for their intended applications.
The performance gap that existed in earlier generations of PFAS-free coatings has been significantly narrowed as demand for alternatives has grown and manufacturers have invested in developing better-performing PFAS-free chemistry and mechanical barrier solutions. Cost remains a factor for some operators, particularly smaller food businesses without the purchasing leverage of major chains, but the performance barrier is no longer the primary obstacle to adoption.
The OECD/UNEP Global Perfluorinated Chemicals Group has published a dedicated report outlining the availability of current chemical and non-chemical alternatives to PFAS in paper and paperboard food packaging — confirming at an intergovernmental level that viable alternatives exist across the key application categories.
PFAS-Free Packaging: Alternatives by Application
Packaging Type
PFAS Use
PFAS-Free Alternative
Fast food wrappers
Grease barrier coating
Wax-coated or silicone-coated paper
Microwave popcorn bags
Heat and grease resistance
PFAS-free barrier liners; stovetop alternatives
Moulded fibre containers
Moisture and grease resistance
Verified PFAS-free moulded fibre
Baking liners
Non-stick, grease-proof surface
Silicone baking mats
Butter and dairy wrappers
Moisture barrier
Verified PFAS-free foil or wax laminates
Paper bags for dry goods
Background contamination / light barrier
Uncoated or wax-treated paper
Can PFAS from food packaging leach directly into food?
Yes, and this is one of the most directly confirmed concerns in the research. PFAS migrate from packaging into food — the rate of migration is higher with fatty foods, with heat, and with extended contact time. Studies measuring PFAS blood levels in people who frequently eat from PFAS-treated packaging have found measurably elevated concentrations compared to those with lower packaging exposure. Microwave popcorn bags are a particularly studied example, given the combination of heat, fat content, and prolonged contact during the cooking process.
This isn't a speculative pathway — it's a confirmed transfer mechanism. The practical implication is that repeated daily exposure to PFAS-treated food packaging represents a meaningful and cumulative contribution to total body burden of these chemicals, even if no single exposure event appears dramatic in isolation.
Why haven't all retailers switched to PFAS-free packaging yet?
The barriers are primarily economic and organisational rather than technical. Switching packaging suppliers requires reformulating specifications, vetting new suppliers, updating contracts, and in some cases absorbing higher per-unit costs in the short term. For large retailers with complex, global supply chains, this is a significant operational undertaking — even when the commitment to do it is genuine. For retailers who haven't yet made the commitment, the calculation often comes down to whether regulatory or reputational pressure has reached the threshold where inaction costs more than action. That threshold is rising, but it hasn't yet been reached universally. For more information on how retailers are committing to phase out PFAS, visit this detailed guide.
Is packaging labelled “compostable” or “recyclable” safe from PFAS?
Not necessarily — and this is one of the most important misconceptions to correct. Research has shown that many compostable food packaging products contain PFAS. The compostable label refers to the breakdown of the structural material, not to the chemical safety of any treatments applied to it. When PFAS-containing compostable packaging breaks down in a composting facility, the structural material degrades but the PFAS remain, contaminating the resulting compost. For more insights into the environmental impact of packaging, consider consulting an environmental consultant.
That contaminated compost is then applied to agricultural land, creating a direct pathway for PFAS to enter soil and, ultimately, food crops. It's a particularly troubling cycle because consumers choosing compostable packaging as an environmentally responsible option may actually be introducing PFAS into the food system through the composting stream without realising it. For more insights into environmental impacts, consider consulting with environmental impact assessments.
Recyclable labelling carries a similar caveat. PFAS-coated paper and board can contaminate paper recycling streams, reducing the quality of recycled fiber and potentially introducing PFAS into products made from recycled content. The recyclable or compostable designation on packaging does not indicate anything about PFAS content — those are entirely separate considerations that require separate verification.
When choosing packaging marketed as eco-friendly, look specifically for verified PFAS-free certification rather than relying on compostable or recyclable labels alone. Organisations including Toxic-Free Future and Fidra maintain resources identifying verified PFAS-free packaging options, which is currently the most reliable way to confirm that an eco-friendly packaging claim also means PFAS-free.
If you want to reduce your exposure to forever chemicals while staying informed on environmental health issues that affect what you eat every day, Fidra's PFAS-free campaign tracks retailer commitments, publishes testing data, and provides practical resources for consumers pushing for faster, more accountable action from the food industry.
PFAS, also known as “forever chemicals,” have been a growing concern due to their persistence in the environment and potential health risks. Many retailers are now under scrutiny for their continued use of PFAS in packaging materials. As consumers become more environmentally conscious, there is a rising demand for transparency and safer alternatives. In response, some companies are conducting environmental impact assessments to evaluate the effects of their packaging choices and explore sustainable solutions.
