Summary Box
The FTC Green Guides (16 CFR Part 260) govern environmental marketing claims in the US, and every objective claim, recycled content, biodegradable, non-toxic, and carbon neutral, requires competent and reliable evidence gathered before the claim is made. Unqualified terms like “eco-friendly” carry the broadest risk because they imply far-reaching benefits few garments can substantiate. Notably, the Guides deliberately decline to define “sustainable” or “organic” at all, which makes those words riskier for apparel brands, not safer.
Most Greenwashing Isn’t Dishonest. It’s Copied.
Here’s how it usually happens. A founder looks at three successful competitors, notices they all describe their products as “eco-friendly” and “sustainably made,” and writes something similar for their own product page. No deception intended. No sense that a line was crossed.
But under US law, every one of those phrases is an objective claim requiring evidence, evidence you need to hold before you publish, not assemble defensively after someone asks. Copying a competitor’s language doesn’t transfer their substantiation to you. If they even have any.
This article does what most greenwashing coverage doesn’t. Rather than reporting on brands getting caught, it walks through what you can actually say, claim type by claim type, and exactly what documentation makes each one defensible. We carry a certification stack ourselves at Affix Apparel, so this is the conversation we have with clients regularly, usually before their copy goes live, which is the far cheaper time to have it.
What the FTC Green Guides Actually Are
The FTC Green Guides, formally the Guides for the Use of Environmental Marketing Claims and codified at 16 CFR Part 260, are the Federal Trade Commission’s guidance on how to make environmental marketing claims without deceiving consumers. First published in 1992, they were last substantively revised in October 2012.
An important nuance most summaries skip: the Guides themselves are administrative interpretations, not independently enforceable regulations. What is enforceable is Section 5 of the FTC Act (15 U.S.C. § 45), which prohibits deceptive practices. A claim inconsistent with the Green Guides is treated as evidence of a deceptive practice, which means the practical effect is the same, even though the Guides aren’t a statute.
The FTC opened a review of the Guides in December 2022 and has not finalized revisions as of 2026, so the 2012 version remains the operative guidance. Treat anything in this article as a current-state summary rather than a permanent law, and check the FTC’s own published Guides before finalizing significant marketing copy.
Substantiation: The Standard Behind Every Claim
The concept underpinning everything below is substantiation, the requirement that you possess competent and reliable evidence supporting a claim at the time you make it.
For objective environmental claims, that generally means competent and reliable scientific evidence: tests, analyses, research, or studies conducted using methods accepted by professionals in the relevant field, producing accurate and reliable results. A supplier’s verbal assurance is not evidence. A logo on a fabric swatch is not evidence. A competitor’s product page is emphatically not evidence.
Qualified vs. Unqualified Claims: The Most Useful Distinction
This single distinction is the most practically valuable concept in the entire Green Guides framework.
An unqualified claim is a bare environmental assertion with no accompanying explanation, “eco-friendly,” “sustainable,” or “biodegradable.” An unqualified claim is legally read as its broadest reasonable interpretation, meaning you’re on the hook for every benefit a reasonable consumer might infer from it.
A qualified claim attaches clear, prominent language specifying exactly what benefit you’re claiming and its limits: “made with 60% recycled polyester” and “dyed using a process that reduces water consumption by 40% compared to conventional dyeing.” “You’re only responsible for substantiating what you actually said.
The practical rule: specificity is protection. Every qualifier you add narrows what you must prove.
Claim by Claim: What You Can Say and What It Requires
“Eco-Friendly” and General Environmental Benefit Claims
This is the riskiest category in apparel marketing and the most casually used.
Under § 260.4, an unqualified general environmental benefit claim is difficult to interpret and likely conveys a wide range of meanings, potentially suggesting the product has specific and far-reaching environmental benefits across its entire lifecycle. Essentially no garment can substantiate that.
Risky: “Our eco-friendly tees.” Defensible: “Our tees are made with 100% GOTS-certified organic cotton and dyed using low-impact dyes.”
The rewrite doesn’t weaken the message. It makes it provable, which is what a skeptical customer actually wants anyway.
“Sustainable” | The Word With No Definition
Here’s the detail that surprises nearly every brand: the Green Guides deliberately decline to provide guidance on “sustainable,” “natural,” or “organic,” because the FTC concluded it lacked a sufficient basis to define them meaningfully and wanted to avoid duplicating or contradicting other agencies’ rules.
This makes the word riskier, not safer. No FTC definition means no safe harbor, but Section 5’s prohibition on deceptive practices still applies in full, alongside state consumer-protection laws that increasingly police these terms. You’re making a claim with no official standard to measure it against, which leaves interpretation entirely to a regulator, a state attorney general, or a class-action attorney.
Risky: “Sustainable clothing, made responsibly.” Defensible: “Made with Global Recycled Standard–certified recycled polyester in a facility certified to [named standard].”
Recycled Content
Recycled content claims have some of the clearest guidance in the entire framework, and they’re also the most commonly overclaimed in apparel.
Under § 260.13, a recycled content claim must be qualified if less than 100% of the product, excluding minor, incidental components, is made with recycled material. The FTC also advises using the annual weighted average of recycled content rather than a best-case figure.
What evidence you need: chain-of-custody documentation tracing the recycled material through your specific supply chain. The Global Recycled Standard (GRS) is the most widely used framework here, verifying recycled content along with social and environmental criteria at each processing stage.
Critically, and this is the part almost nobody publishes, your certification documentation must be order-specific. A supplier holding a valid GRS scope certificate proves their facility is certified to handle recycled material. It does not prove that your fabric came from certified recycled input. That requires a transaction certificate covering your actual order. A facility certificate and a transaction certificate are not interchangeable, and only the second one substantiates a claim about the garment you’re selling.
Risky: “Made from recycled plastic bottles.” Defensible: “Made with 65% GRS-certified recycled polyester.”
“Biodegradable” | The Claim Most Apparel Simply Cannot Make
This is where the most straightforwardly indefensible apparel claims live.
Under § 260.8, a marketer making an unqualified degradable claim must have competent and reliable scientific evidence that the entire item will completely break down and return to nature within a reasonably short period after customary disposal. The FTC sets that period at approximately one year.
And here’s the part that disqualifies most garments outright: it is deceptive to make an unqualified degradable claim for items entering the solid waste stream if they don’t completely decompose within one year of customary disposal. Since the overwhelming majority of discarded clothing goes to landfill, where decomposition is extremely slow, if it happens at all, an unqualified “biodegradable” claim on a garment is very difficult to defend.
Risky: “100% biodegradable hoodie.” Defensible: Either omit the claim or qualify it precisely and prominently, specifying the environment in which degradation occurs and the rate and extent of that degradation, backed by actual test data. If you can’t produce that data, don’t make the claim.
“Non-Toxic”
An unqualified non-toxic claim conveys that the product is non-toxic both to humans and to the environment, and the FTC notes “the environment” includes pets and domestic animals. That’s a broader assertion than most brands intend.
If what you actually mean is that your fabric tested free of harmful substances above defined limits, say that specifically. An OEKO-TEX Standard 100 certification, for example, supports a precise statement about harmful-substance testing, it does not support a blanket “non-toxic” claim.
Risky: “Non-toxic fabrics.” Defensible: “Tested for harmful substances under OEKO-TEX Standard 100, Class II.”
“Carbon Neutral”
Carbon-neutral claims typically rest on carbon offsets, and the Green Guides address offset claims directly: marketers should have competent and reliable scientific evidence supporting the carbon reduction, avoid double-counting (claiming a reduction that another party also claims), and clearly disclose if the underlying reduction won’t occur for two years or more.
If you’re claiming carbon neutrality, you need documentation of the emissions calculation methodology and the offsets purchased, not just an invoice from an offset provider.
A Quick Audit of Your Own Product Pages
Run every environmental claim currently live on your site through these five questions:
- Is this claim qualified or unqualified? If unqualified, can you substantiate its broadest reasonable interpretation?
- What specific evidence do I hold right now? Not what a supplier said, but what documentation is actually in your possession.
- Is my certification documentation order-specific? A facility scope certificate isn’t a transaction certificate.
- Is the qualifying language clear and prominent? A disclaimer buried elsewhere on the page, or not adjacent to the claim, may not cure a deceptive net impression.
- Would this claim survive a written request for substantiation? If answering would require calling your supplier and hoping, the claim is already a liability.
The Honest Advice: Get Legal Review at Scale
Everything above is a practical framework, not legal advice, and if you’re running environmental claims across a full catalogue, at meaningful revenue, or in multiple states, have a qualified attorney review your marketing copy. State consumer-protection laws add another layer beyond federal guidance, and several states have been increasingly active in this space precisely as federal enforcement has slowed.
What a manufacturer can do is make sure the documentation exists in the first place. When we work with brands on apparel customization or private labeling, the certification paperwork behind a fabric choice is part of the conversation, because a claim you can’t document is a claim you shouldn’t publish, and finding that out after the copy is live is the expensive version.
Say Less, Prove More
The brands that get into trouble with environmental claims usually aren’t the dishonest ones. They’re the ones who inherited vague language from a competitor and never asked what evidence sat underneath it.
The fix is genuinely simple: replace every broad claim with a specific one, hold the documentation before you publish, and make sure that documentation covers your actual order rather than your supplier’s facility in general. Specificity is more persuasive to customers and more defensible to regulators, which makes it a rare case where the safe choice is also the better marketing.
Sourcing with documentation that actually backs your claims is part of how we work; learn more about who we are, and let’s talk about what your next run can genuinely support.
Frequently Asked Questions
Can I call my clothing sustainable?
There’s no FTC definition of “sustainable,” which makes it riskier rather than safer, Section 5’s prohibition on deceptive practices still applies, with no safe harbor to rely on. A specific, substantiated claim like “made with GOTS-certified organic cotton” is both more defensible and more persuasive than the unqualified word “sustainable.”
What evidence do I need for a recycled content claim?
Chain-of-custody documentation tracing recycled material through your specific supply chain, most commonly a Global Recycled Standard transaction certificate covering your actual order, not just a supplier’s facility scope certificate. Claims must also be qualified with the actual percentage if less than 100% of the product is recycled content.
Is “eco-friendly” a legal term?
It’s not a defined or protected term, but it is an actionable claim. The Green Guides treat unqualified general environmental benefit claims as conveying broad, far-reaching benefits that few products can substantiate, making “eco-friendly” one of the riskiest phrases in apparel marketing.
Can clothing be marketed as biodegradable?
Rarely without qualification. An unqualified degradable claim requires evidence the entire item completely breaks down within roughly one year after customary disposal, and items entering landfills don’t meet that standard. A qualified claim specifying the degradation environment, rate, and extent, backed by test data, may be possible.
What are the FTC Green Guides?
The FTC Green Guides (16 CFR Part 260) are the Federal Trade Commission’s guidance on making non-deceptive environmental marketing claims, covering recycled content, degradable, compostable, non-toxic, and carbon offset claims. Last substantively revised in 2012, they remain under review as of 2026.
