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How to spot PFAS-free cookware, rainwear and dental floss

Labels like 'PFOA-free' can mislead. A short guide to the words that matter and the materials that avoid the question.

2 October 2026 · 7 min read

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Chetanya Goel · Founder & Editor

Chetanya started Annam Naturals after two years of keeping a household waste diary. Chetanya writes about the boring, repeatable habits that hold up in a real week.

Once you know PFAS exist, the next problem is shopping. Labels are inconsistent, and some are written to reassure rather than inform. Here is how to read them for the three categories where PFAS are most common at home.

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Cookware

The 'PFOA-free' trap

PFOA is one specific PFAS that was phased out years ago. A pan labelled PFOA-free can still have a PTFE (Teflon-type) coating, which is itself a PFAS. The label is true but tells you little.

What to look for

  • Stainless steel, cast iron, carbon steel and enamelled cast iron contain no PFAS coatings
  • Clay and glass bakeware are also free of coatings
  • 'Ceramic non-stick' pans usually use a silica-based coating rather than PTFE; check the brand states it is PFAS-free, not just PFOA-free

Cast iron and carbon steel become naturally non-stick with seasoning and last decades, which makes them the lowest-waste choice too. Our non-toxic cookware guide covers the trade-offs in more detail.

Rainwear and outdoor gear

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Durable water repellent (DWR) finishes on jackets were traditionally made with PFAS. Many outdoor brands have now switched. Look for 'PFC-free' or 'PFAS-free DWR' on the label or product page. Waxed cotton, wool and some newer membranes are alternatives. To keep any jacket working longer, wash it as the label instructs and re-proof it with a PFAS-free treatment.

Dental floss

Some glide-style flosses have been found to contain PTFE. Plain nylon floss, silk floss with a plant-based wax, or interdental brushes avoid it. Brands that have removed PTFE usually say so plainly.

Other places to check

  • Takeaway packaging: ask for plain paper or bring your own container
  • Carpets and sofas: avoid optional stain-guard treatments
  • Cosmetics: in some markets, ingredients with 'fluoro' or 'PTFE' in the name indicate PFAS

A rule that saves effort

If a product promises to repel water, oil or stains without being made of something naturally resistant, ask how. A brand that has removed PFAS will usually tell you. A brand that answers with a vague 'eco-friendly' is often the one to skip.

For more of this kind of testing, the eco-friendly product guides hub collects everything we've tried in that area.

Frequently asked

Do I need to buy anything to get started?

No. Every method here begins with what is already in your cupboards. We only recommend a purchase when something has genuinely worn out, and we say what it should cost.

How do you test the things you write about?

Minimum four weeks of ordinary household use, with notes. For anything involving energy or money we use a plug-in meter and record the readings before and after.

Are your recommendations paid for?

Never. Brands cannot buy placement. Some outbound links are affiliate links, which we mark, and they do not change what makes the list.

What if a method doesn't work in my home?

Write to us. A surprising amount of our best material comes from readers explaining why something failed in a flat, a shared house or a very cold winter.

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