PFAS-Free Water Repellents

A PFAS-free water repellent is a durable water-repellent finish that contains no per- and polyfluoroalkyl substances — no fluorine at all. As PFAS bans spread across the EU, the US and beyond, brands are switching from fluorocarbon finishes to PFAS-free (fluorine-free, or C0) chemistry to keep their products compliant and on the shelf. This guide explains what “PFAS-free” actually means, what you gain and the one thing you give up, and how to switch without losing water repellency.

For the wider picture, see our guide to durable water repellent (DWR) finishes; to compare the chemistries head-to-head, see C6 vs C0 vs C8 water repellents.

What counts as a PFAS-free water repellent?

PFAS — per- and polyfluoroalkyl substances — are a large family of fluorine-based chemicals. A finish is only PFAS-free if it contains no fluorine at all, which in practice means a C0, fluorine-free chemistry built on silicone, hydrocarbon, dendrimer or modified-polymer technology.

The common trap: “PFOA-free” is not the same as PFAS-free. A C6 short-chain fluorocarbon is PFOA-free but still contains fluorine, so it is still a PFAS. Only a fluorine-free C0 finish genuinely clears a PFAS-free specification.

PFOA, PFOS and PFAS: what is the difference?

These three terms are often used interchangeably, but they are not the same:

• PFAS is the whole family — per- and polyfluoroalkyl substances, thousands of fluorine-based chemicals.
• PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate) are two specific, long-chain (C8) PFAS. They were the first to be restricted, because they are persistent, bioaccumulative and toxic.

So PFOA and PFOS are PFAS, but not every PFAS is PFOA or PFOS. This is why “PFOA-free” is not the same as PFAS-free: a C6 finish is PFOA-free yet still a PFAS, because it still contains fluorine. Only a fluorine-free C0 finish is genuinely PFAS-free. As regulation moves from banning individual substances like PFOA and PFOS toward restricting the whole PFAS class, that distinction is what future-proofs a finish.

Why brands are going PFAS-free

The shift is driven by regulation moving from single-substance bans toward whole-class restrictions:

• United States: several states now restrict PFAS in textiles and apparel — California’s AB 1817, plus laws in New York and Washington — with more added each year.
• European Union: PFOA is already restricted, and a proposed universal PFAS restriction is under review by the European Chemicals Agency (ECHA), which would cover the whole class, including short-chain C6.
• Retailers & brands: major retailers’ restricted-substance lists (RSLs) and programmes like ZDHC’s MRSL are phasing PFAS out ahead of the law.

Qualifying a PFAS-free water repellent now means you avoid re-testing and re-sourcing every time a new jurisdiction tightens the rules.

What you gain — and the one thing you give up

Switching gives you compliance across every market, a cleaner safety and marketing story, and — with modern C0 — water repellency that matches fluorocarbons. The one real trade-off: a fluorine-free finish cannot repel oil. Oil and grease need the low surface energy that only fluorochemistry provides. If your product genuinely needs oil and stain repellency, that is the single case where you may still need a C6 — we compare the two in C6 vs C0 water repellent.

Does PFAS-free mean weaker water repellency?

No — this is the biggest misconception. Applied correctly, with a crosslinker and a proper heat cure, a modern C0 achieves a high spray rating and strong wash durability, often 20+ wash cycles, for water repellency. The chemistry has caught up; the days of fluorine-free meaning “washes out after three launderings” are gone.

Where a PFAS-free water repellent works best

• Apparel & kidswear: jackets, sportswear, school uniforms — where safety and PFAS-free claims matter most.
• Technical textiles & filtration: replacing a legacy fluorinated finish on an existing production line to future-proof it.
• Consumer sprays: Scotchgard-style water-repellent sprays sold to end users who want a non-toxic option.

How to switch to a PFAS-free water repellent

1. Check your real spec: confirm whether you actually need oil repellency, or only water. Most apparel and filtration needs water only.
2. Qualify a C0 grade matched to your substrate — some fibres need a low-temperature cure.
3. Dial in application: the right crosslinker and cure temperature are what deliver durability. See how to apply a durable water repellent.
4. Re-test spray rating and wash durability against your targets.
5. Update your TDS and product claims once the finish is validated.

Get a PFAS-free water repellent sample

DWR Factory supplies water-based and solvent-based C0 (fluorine-free) PFAS-free water repellents for textiles, filtration and consumer sprays, with OEKO-TEX and ZDHC-compliant options and a TDS/SDS for every grade. Tell us your substrate and target spray rating and we’ll recommend a PFAS-free grade — request a free sample, or browse the product range.

Frequently asked questions

What does PFAS-free mean for a water repellent?

It means the finish contains no per- and polyfluoroalkyl substances — no fluorine at all. In practice that means a C0, fluorine-free chemistry rather than a fluorocarbon.

Is C6 PFAS-free?

No. C6 is PFOA-free, but it still contains fluorine, so it is still a PFAS. Only a fluorine-free C0 finish is genuinely PFAS-free.

Is fluorine-free the same as PFAS-free?

Yes. Because every PFAS contains fluorine, a genuinely fluorine-free (C0) finish is by definition PFAS-free.

Does a PFAS-free water repellent still repel water well?

Yes. Applied with a crosslinker and a proper cure, modern C0 matches fluorocarbons on spray rating and wash durability for water repellency.

Can a PFAS-free finish repel oil?

No. Oil repellency requires fluorochemistry. A PFAS-free (C0) finish repels water and water-based stains only.

Are PFAS being banned in textiles?

Increasingly, yes. US states such as California, the EU’s proposed universal PFAS restriction, and major retailer RSLs are all phasing PFAS out of textiles.

What is the difference between PFOA, PFOS and PFAS?

PFAS is the whole family of per- and polyfluoroalkyl substances. PFOA and PFOS are two specific, long-chain PFAS that were restricted first. So PFOA and PFOS are PFAS, but not all PFAS are PFOA or PFOS — and a PFOA-free finish can still be a PFAS.