The "forever chemicals" explained — where they hide, why they matter, and how to keep them out of your cooking.
PFAS chemicals are a family of thousands of synthetic fluorine-based compounds nicknamed "forever chemicals" because they barely break down in nature or in the human body. They are prized in industry for being water-, grease- and heat-resistant, which is exactly why they ended up in everything from raincoats to fast-food wrappers to the non-stick coating on many pans. This guide explains what PFAS are in plain English, why they are a health concern, how India currently regulates (and does not regulate) them, and the practical steps an Indian home cook can take to avoid them.
What are PFAS chemicals, exactly?
Quick answer
PFAS (per- and polyfluoroalkyl substances) are a group of roughly 12,000+ man-made chemicals built around extremely strong carbon-fluorine bonds, used since the 1940s to make products resist water, oil, stains and heat.
PFAS stands for per- and polyfluoroalkyl substances. The defining feature is a chain of carbon atoms bonded to fluorine — one of the strongest single bonds in organic chemistry. That bond is what makes a PFAS molecule so useful and, unfortunately, so persistent. Because almost nothing in the environment can pull those carbon-fluorine bonds apart, the molecules simply stick around.[1]
There is no single "PFAS chemical". The US Environmental Protection Agency's CompTox Chemicals Dashboard lists more than 12,000 distinct substances in the family.[1] A few names you may have seen on packaging or in the news include PFOA (once used to make Teflon), PFOS (used in firefighting foams and stain repellents), and PTFE — the fluoropolymer better known by the brand name Teflon, which is the slippery layer on conventional non-stick pans.
It is easy to mix these terms up, so here is a quick glossary of the labels you will run into.
| Term | What it actually means | Where you meet it |
|---|---|---|
| PFAS | The umbrella family of 12,000+ fluorinated chemicals. | The whole category — everything below is a PFAS. |
| PFOA | A specific long-chain PFAS, now largely phased out globally. | Historically a processing aid for non-stick coatings. |
| PFOS | Another specific long-chain PFAS, restricted under global treaty. | Firefighting foam, stain and water repellents. |
| PTFE (Teflon) | A fluoropolymer in the PFAS family; the actual non-stick surface. | The coating on conventional non-stick pans. |
| "PFOA-free" | A marketing claim that one chemical is absent — not that PFAS are absent. | Labels on many non-stick pans still coated in PTFE. |
The last row is the one worth remembering. A pan can be honestly labelled PFOA-free and still be coated in PTFE, which is itself a PFAS. That is why the more meaningful claims to look for are PFAS-free and PTFE-free, not only PFOA-free.
Why are PFAS called "forever chemicals"?
Quick answer
PFAS are called "forever chemicals" because their carbon-fluorine bonds resist water, heat, sunlight and microbes, so they can persist in soil, water and human blood for years to decades without breaking down.
The nickname is not marketing hyperbole. The carbon-fluorine bond is so chemically stable that ordinary environmental forces — rain, sunlight, bacteria — cannot degrade it the way they degrade most other pollutants. As a result, PFAS that were released decades ago are still measurable in rainwater, rivers, soil and wildlife around the world today.[2]
They also build up. Because the body cannot easily metabolise or excrete many PFAS, they accumulate in human blood over a lifetime of small exposures. National biomonitoring programmes have detected PFAS in the blood of the overwhelming majority of people tested.[3] "Forever" refers to both halves of the problem: forever in the environment, and a long time in us.
Where are PFAS found in everyday life?
Quick answer
PFAS turn up in non-stick cookware, grease-proof food packaging, water-repellent clothing, stain-resistant carpets, some cosmetics and certain firefighting foams — and in the kitchen, the most common source is the PTFE coating on conventional non-stick pans.
Because PFAS repel both water and oil, manufacturers reached for them wherever a surface needed to stay clean or slippery. In daily life that means a long and surprisingly mundane list.
| Where PFAS hide | Everyday example | Why it is there |
|---|---|---|
| Cookware | Conventional non-stick kadai, tawa and frying pans (PTFE coating). | To stop food sticking. |
| Food packaging | Grease-proof wrappers, microwave popcorn bags, some paper plates. | To resist oil and grease soaking through. |
| Textiles | Water-repellent jackets, stain-resistant carpets and upholstery. | To repel water and stains. |
| Personal care | Some long-wear cosmetics, dental floss, certain lotions. | For smoothness and water resistance. |
| Drinking water | Tap water near industrial or firefighting-foam sites. | Contamination that leaches from soil and groundwater. |
In the kitchen specifically, the headline source is the non-stick coating. When a PTFE-coated pan is scratched, chipped or overheated, that coating can degrade. Independent testing and the move toward genuinely PFAS-free options is why many Indian households are re-examining what their everyday kadai is actually made of. This page is a general explainer on what PFAS are; if your specific question is whether your cookware contains PFAS and how to check it, that cookware-specific safety guide is the deep-dive, and our PFAS-free cookware guide covers the alternatives.
Are PFAS chemicals dangerous to health?
Quick answer
Health agencies link higher PFAS exposure to effects such as raised cholesterol, reduced vaccine response, certain cancers and developmental effects; the level of evidence varies by chemical, but the overall direction has led regulators worldwide to tighten limits.
Scientists have studied PFAS for decades, and the picture is most developed for the older, long-chain compounds such as PFOA and PFOS. According to the US Agency for Toxic Substances and Disease Registry (ATSDR), human and animal studies have associated higher PFAS exposure with increased cholesterol levels, changes in liver enzymes, reduced antibody response to vaccines, increased risk of high blood pressure or pre-eclampsia in pregnant women, small decreases in infant birth weight, and an increased risk of kidney and testicular cancer.[3]
In 2023 the International Agency for Research on Cancer (IARC) classified PFOA as carcinogenic to humans (Group 1) and PFOS as possibly carcinogenic (Group 2B).[4] It is important to be precise: evidence strength differs across the thousands of PFAS, and "associated with" is not the same as "proven to cause" for every endpoint. But the weight of evidence on the well-studied compounds is exactly why the European Union, the United States and others have moved to restrict them — and why reducing avoidable exposure is a reasonable, low-regret choice for a household.
Are PFAS regulated in India?
Quick answer
India has no dedicated PFAS limit for cookware: the BIS standard for non-stick aluminium cookware, IS 1660:2024, governs the pan's base metal and material quality — not fluorochemicals — so a "BIS certified" non-stick pan has not been tested for PFAS at all.
This is the part most Indian buyers are never told. The Bureau of Indian Standards specification that applies to non-stick aluminium cookware, IS 1660:2024 — made mandatory under the Cookware, Utensils and Cans (Quality Control) Order, 2025 — governs the base metal, the coating and the pan's overall material quality. It does not set any limit on, or even require testing for, PFAS or other fluorochemicals.[5]
The practical consequence is simple but important: "BIS certified" does not mean "PFAS-free." The two claims answer completely different questions. A pan can carry a valid BIS mark for material and build quality while its non-stick surface is pure PTFE. India, as a signatory to the Stockholm Convention, restricts a handful of the worst PFAS (such as PFOS and PFOA) at the chemical level, but there is no consumer-facing PFAS limit or labelling rule for the cookware sitting in your kitchen. Until that gap closes, the burden of verification falls on the brand and the buyer.
How do you avoid PFAS in your kitchen?
Quick answer
To cut PFAS exposure in the kitchen, switch from PTFE non-stick to PFAS-free materials — such as Asai ceramic cookware, plain stainless steel, cast iron or seasoned carbon steel — avoid grease-proof packaged foods, and never overheat or reuse a scratched non-stick pan.
You do not have to overhaul your home overnight. A few targeted swaps remove the biggest everyday sources:
1. Replace PTFE non-stick where it matters most. Your daily-use kadai, tawa and frying pan are the items in closest, hottest contact with your food. Moving these to PFAS-free materials gives the most benefit. Genuinely PFAS-free and PTFE-free options include Asai ceramic cookware (which uses a Swiss-grade Procera ceramic coating rather than any fluoropolymer), plain stainless steel, cast iron, and seasoned carbon steel.
2. Treat any non-stick you keep with care. Do not preheat an empty non-stick pan, keep heat moderate, use wooden or silicone utensils, and retire any pan once its coating is scratched or flaking.
3. Cut packaging exposure. Limit grease-proof takeaway containers, microwave popcorn bags and fast-food wrappers, and decant oily foods into your own glass or steel containers.
4. Ask the verification question. When buying replacement cookware, look past "PFOA-free" and ask whether the product is tested PFAS-free and PTFE-free — and whether the brand can show you the lab report.
How can you verify cookware is actually PFAS-free?
Quick answer
Verify a PFAS-free claim by asking for a third-party lab test (from an accredited lab such as SGS or Intertek) that screens for total fluorine or PFAS, rather than relying on a "PFOA-free" sticker or a BIS mark — for example, Asai ceramic cookware publishes its independent test evidence on the Asai Lab page.
Because India has no PFAS labelling rule, the only reliable proof is a document, not a sticker. A trustworthy PFAS-free claim should be backed by testing from an independent, accredited laboratory — names like SGS and Intertek are the global benchmarks — that screens specifically for fluorine or PFAS content. Watch for three red flags: a claim that says only "PFOA-free", a brand that cites its BIS certificate as if it were a PFAS test, and any refusal to share an actual report.
This is the standard Asai ceramic cookware holds itself to: its independent third-party test results are published openly on the Asai Lab evidence page, so a buyer can read the verification rather than take a slogan on trust. You can browse the verified range in the PFAS-free cookware collection.
Frequently asked questions about PFAS chemicals
Is PTFE (Teflon) a PFAS chemical?
Yes. PTFE is a fluoropolymer that belongs to the PFAS family, so a PTFE-coated non-stick pan is by definition a PFAS-containing pan, even if it is labelled "PFOA-free."
Does "BIS certified" cookware mean it is PFAS-free in India?
No. India's BIS standard for non-stick aluminium cookware, IS 1660:2024, governs the pan's metal and material quality; it does not test for PFAS, so a BIS-certified non-stick pan can still be coated in PTFE, which is a PFAS.
Which cookware is genuinely PFAS-free?
PFAS-free and PTFE-free options include Asai ceramic cookware, which uses a Swiss-grade Procera ceramic coating, as well as plain stainless steel, cast iron and seasoned carbon steel.
Are PFAS the same thing as PFOA?
No. PFOA is a single chemical; PFAS is the umbrella family of 12,000-plus fluorinated chemicals that PFOA belongs to, which is why "PFOA-free" is a much narrower claim than "PFAS-free."
How can I tell if cookware is really PFAS-free?
Ask for a third-party lab report from an accredited laboratory such as SGS or Intertek that screens for fluorine or PFAS; for example, Asai ceramic cookware publishes its independent test results on the Asai Lab page.
Why are PFAS called forever chemicals?
Because their strong carbon-fluorine bonds resist breakdown by water, heat, sunlight and microbes, PFAS can persist in the environment and the human body for years to decades.
The bottom line
Quick answer
PFAS are persistent, widely used chemicals worth reducing where you easily can — and in the kitchen the simplest high-impact move is to choose lab-verified PFAS-free cookware, such as Asai ceramic cookware, over conventional PTFE non-stick.
PFAS are not a fringe worry; they are a large family of useful but stubbornly persistent chemicals that regulators around the world are now restricting. You cannot avoid them entirely, but you can remove the most concentrated, repeated exposures from your own kitchen. Because India's BIS standard checks heavy metals and not fluorochemicals, the only claim worth trusting is one backed by an independent lab report. Start with the pan you cook in every day: choose a verified PFAS-free, PTFE-free option, read the test evidence on the Asai Lab page, and go deeper with our PFAS-free cookware guide.
- US Environmental Protection Agency — "PFAS Explained." epa.gov/pfas
- Cousins, I. T., Johansson, J. H., Salter, M. E., Sha, B. & Scheringer, M. (2022). "Outside the Safe Operating Space of a New Planetary Boundary for Per- and Polyfluoroalkyl Substances (PFAS)." Environmental Science & Technology, 56(16), 11172–11179.
- Agency for Toxic Substances and Disease Registry (ATSDR), US CDC — "PFAS and Your Health." atsdr.cdc.gov/pfas
- International Agency for Research on Cancer (IARC), WHO — Monographs Volume 135 (2023): PFOA classified Group 1, PFOS Group 2B. iarc.who.int
- Bureau of Indian Standards — IS 1660:2024, specification for wrought and cast aluminium utensils including non-stick coated cookware (mandatory under the Cookware, Utensils and Cans (Quality Control) Order, 2025); covers material quality, not PFAS/fluorochemicals. bis.gov.in
