PFAS-Free Leggings: The 2026 Brand Scorecard

As of mid-2026, most of the activewear category still hasn't published the numbers, and regulators are starting to notice.

What actually changed in April 2026

On April 16, 2026, Texas Attorney General Ken Paxton announced a formal investigation into Lululemon over the potential presence of toxic forever chemicals in its products. Legal analysts at Pillsbury note the probe leans on the Texas Business and Commerce Code, which carries penalties of up to $10,000 per violation. Tech Xplore called it a watershed moment for the activewear category. A separate federal class-action lawsuit accuses Lululemon of greenwashing.

An investigation is not a finding of guilt. What it means, in plain English, is that a state attorney general now publicly doubts whether a category-defining activewear brand's chemistry matches its marketing. Between the AG probe, the class action, and the As You Sow shareholder resolution, three legal tracks are moving on the same category at the same time. That is why every leggings founder and every serious shopper we know is suddenly asking about PFAS.

What "PFAS-free" has to actually mean

PFAS stands for per- and polyfluoroalkyl substances. There are more than 12,000 of them in the EPA database.

For a leggings product to credibly claim PFAS-free, one of three things has to be true. First, the brand publishes third-party total-fluorine data below detection, typically under 10 parts per million for ionic PFAS and below detection for the broader fluorine indicator. Second, the SKU carries OEKO-TEX Standard 100 or certification, both of which restrict PFAS as criteria. Third, the fabric platform itself carries an ingredient-brand certification with a published chemistry restricted-substances list.

What doesn't count is vague language. "Low-impact," "eco," "responsibly made," "sustainably sourced," none of it is regulated. None of it means PFAS-free. If the only PFAS reference lives on the marketing page and the fiber content label says polyester, polyamide, or nylon with no certification, the claim is unverified.

Related: our per-batch test panel.

The brand-by-brand PFAS scorecard

This is the honest read. Each cell is sourced. If a brand hasn't published third-party PFAS lab data, we say so, because silence is informative.

Three patterns to notice. First, the brands most associated with sustainability marketing aren't the ones publishing the cleanest PFAS data. Third, independent lab investigations by Mamavation have repeatedly detected indicator fluorine in name-brand leggings, sports bras, and yoga pants. As You Sow filed a separate microfiber-shedding shareholder resolution against Lululemon in December 2025.

The 2026 state ban map

State-level PFAS-in-apparel laws are the enforcement reality now, not a future problem. If you're selling nationally, California is the floor: a garment that passes California can sell into all 50 states. Several other laws are already in force.

• California. AB 1817 bans intentionally added PFAS in apparel and textiles. Effective January 1, 2025. Outdoor severe-wet-conditions exemption phases out January 1, 2028.
• New York. S6291A bans PFAS in apparel. Effective December 31, 2024. Outdoor severe-wet exemption phases out December 31, 2027.
• Maine. LD 1503, the country's first comprehensive PFAS-in-products law. Apparel restrictions phase in through 2029.
• Vermont. S.25 prohibits sale of textiles with intentionally added PFAS effective July 1, 2026.
• Connecticut. HB 6486 restricts PFAS in apparel and outdoor gear with phase-in starting 2026.
• Colorado, Washington, Minnesota. Each has passed PFAS-in-apparel bans with effective dates from 2026 to 2028.
• European Union. Universal PFAS restriction proposal under REACH targets consumer applications including apparel, with anticipated full effect in 2030. See 's PFAS regulatory roundup.

The ban map is what's forcing the rest of the industry to catch up to the brands that quietly removed PFAS years ago. If you're a founder, this is the compliance floor you're now building against, not aiming at.

What to look for on the hangtag

The plain-language checklist a shopper can use in 90 seconds, strongest signal to weakest.

• OEKO-TEX Standard 100 hangtag. Tests the finished garment against 100+ regulated substances including PFAS. The single strongest label-level signal.
• approved. Approves upstream chemical inputs with PFAS restriction built in. Strong process-level signal.
• certified. The fiber is organic and processed without the worst-class chemicals. Less PFAS-specific than OEKO-TEX but a strong overall trust signal.
• The fabric platform itself is formulated PFAS-free at the polymer level and independently tested.
• Brand-published lab report. A third-party total-fluorine result for the specific SKU. Any brand publishing one has done the work.

What doesn't pass the checklist: language alone. If the only PFAS reference is on a marketing page and the fiber content label still lists polyester, polyamide, nylon, or untreated elastane without certification, the claim is unverified.

Why the plant-derived path is where this ends up

Most PFAS in activewear are there to give synthetic fibers a feature they lack natively. The newer plant-derived performance platforms are formulated PFAS-free at the polymer level. There's no finish to remove because there's no need for one.

That's the simplest defensible position for a founder building today. A fabric without PFAS chemistry in the recipe is structurally different from a synthetic that had PFAS removed by request. For ongoing brand investigations and lab data, keep an eye on our blog.

Related: private label on OHZEHN-TEX.

Frequently asked questions

Which leggings brands are confirmed PFAS-free?

Levi Strauss earned an A+ on the NRDC PFAS scorecard for its broader denim and apparel program. Most major activewear brands still have not published verifying lab data.

Does Lululemon use PFAS in its leggings?

In April 2026, Texas Attorney General Ken Paxton opened a formal investigation into Lululemon over the potential presence of PFAS in its products, citing concerns about toxic forever chemicals and consumer protection. Lululemon has not published comprehensive third-party PFAS lab data for its activewear line. A separate class-action lawsuit accuses Lululemon of greenwashing.

How can I test my own leggings for PFAS?

Consumer-level PFAS testing is limited. Independent labs used by Mamavation and the NRDC measure total fluorine as an indicator of intentionally added PFAS. Total fluorine above roughly 100 parts per million in fabric is considered a strong signal of PFAS treatment.

Are recycled polyester leggings PFAS-free?

Not automatically. Recycled polyester refers to the source of the polymer, not the chemistry of the finishes applied to it. Recycled polyester also still sheds microplastic fibers during washing at rates comparable to virgin polyester.

What states have banned PFAS in leggings?

California (AB 1817, effective January 2025), New York (S6291A, effective December 2024), Maine (LD 1503, phased), Vermont (S.25, effective July 2026), Connecticut (HB 6486, 2026), Colorado, Washington, and Minnesota all restrict intentionally added PFAS in apparel, including leggings. Severe wet-condition outdoor exemptions phase out by 2027 to 2028. The EU is finalizing a universal PFAS restriction under REACH targeting full effect by 2030.

What are the health concerns with PFAS in leggings?

PFAS exposure has been associated with thyroid disruption, immune-system effects, cholesterol changes, and certain cancers in long-term epidemiology studies. The skin is a less efficient absorption route than ingestion, but a 2023 University of Birmingham study found that sweat substantially increases dermal absorption of textile-released chemicals. Leggings are worn against sweating skin for long durations, which is what concerns researchers and regulators.

Are organic cotton leggings PFAS-free?

The catch is that organic cotton lacks meaningful stretch and is often blended with elastane for fit. Check the fiber content label and the certification body.