A bag of coffee says “sustainably sourced.” A bottle of shampoo says “better for the planet.” A set of sheets says “made from bamboo.”
Ask what each one had to prove before it went to print, and the honest answer is that it depends completely on which one you’re looking at. One of those three is governed by a specific federal guide with worked examples. One is the kind of broad claim the government says marketers shouldn’t make at all. And one is probably not even accurate about the material.
No federal rule defines “sustainably sourced.” No agency certifies it. But that is not the same thing as saying green claims are unregulated, and the gap between those two statements is where a shopper can get some traction.
Where a green claim sits among label words
Claims come in four varieties. Knowing which bucket you’re in tells you what the phrase can be made to do.
Some terms are defined in regulation. A binding federal rule sets the test, and failing it makes a product mislabeled. USDA organic works this way, with labeling tiers and a certifying agent who has to approve the label before it’s used.
Some are governed by agency guidance. No rule defines the word. Instead, an agency publishes how it applies existing law when that word shows up in marketing, and enforcement follows from the law, not from the guidance.
Some are certified by a private body, where an outside organization writes a standard and licenses a mark to companies that meet it.
And some are completely undefined, free for anyone to print.
“Sustainably sourced” lands in the second bucket, and that’s the part most people get wrong in both directions. It isn’t a protected term you can sue over directly. It also isn’t a free-for-all. The Federal Trade Commission’s Green Guides, at 16 CFR Part 260, set out how the agency reads deception law when a company makes an environmental claim.
What the Green Guides are, and what they are not
The FTC describes the purpose simply on its own page: “The Green Guides were issued to help marketers ensure that the claims they are making are true and substantiated.” They do three things. They give general principles for environmental claims, they explain how consumers are likely to read particular claims and how a company can back them up, and they show how to qualify a claim so it doesn’t mislead.
Now the part that trips people. Section 260.1 of the guides says they state the FTC’s current views and are meant to help marketers avoid claims that would be unfair or deceptive under Section 5 of the FTC Act. They don’t create rights, and they don’t bind the agency or the public. The FTC can still act against a claim that departs from them, and when it does, it still has to prove the claim was unfair or deceptive.
It means a product is never “Green Guides certified.” There is no audit, no seal, no passing grade. The guides explain when the agency thinks a green claim crosses into deception, written for the companies writing the copy.
The FTC first issued them in 1992 and revised them in 1996, 1998 and 2012, according to the agency’s own business blog. The FTC says it generally reviews its rules and guides at least once every ten years.
What “substantiated” means in practice
Section 260.2 defines the test. A representation or omission is deceptive if it’s likely to mislead consumers acting reasonably and it’s material to their decision. A marketer has to identify every express and implied claim an ad reasonably conveys, and have a reasonable basis for each reasonable reading before the claim runs.
For environmental claims, that basis usually means what the agency calls “competent and reliable scientific evidence,” produced by objective testing or analysis done by qualified people, in enough quality and quantity to show the claim is true.
The key word is implied. A company is on the hook for what a normal shopper takes away, not just for what the words literally say. That principle generates the examples below, and they’re the most useful thing in the entire rulebook.
The rule at the center of every green claim
Section 260.4 governs general environmental benefit claims, which are exactly the claims most shoppers see. Four ideas run through it.
First, misrepresenting a general environmental benefit is deceptive, whether the company states it outright or only implies it.
Second, a broad, unqualified claim shouldn’t be made at all. The reasoning is that shoppers hear far-reaching benefits, and possibly a product with no downside, and a company is unlikely to be able to support every reasonable version of that. This is a stronger position than people expect. The guides don’t say “be careful with ‘eco-friendly.'” They say don’t.
Third, a company can fix the problem by qualifying the claim in clear, prominent language that limits it to one specific benefit, and it should not dress up a trivial benefit as a meaningful one. If the narrowed claim still implies the product is better overall, the company should analyze the trade-offs before saying so.
Fourth, a qualifier won’t rescue a claim if the rest of the advertisement, including pictures, still implies something deceptive.
Together those four ideas describe the pattern the rules exist to catch. The pattern has a name, greenwashing, and it deserves its own article. What follows here is the legal machinery underneath it.
Five examples from the rule book worth remembering
The guides include worked examples, and they’re vivid enough to change how you read a package. Here they are in plain language.
A brand name can deceive by itself. A product sold under a name built from the word eco, with nothing else attached, makes the broad claim the guides warn against. The same name works when it’s tied to a specific, prominent statement, such as a reference to recycled materials, provided the company can back up that the item really is made that way and that the choice genuinely improves its footprint.
A true number can still mislead. Packaging described as greener than the company’s previous version, where the only change was a 15 percent cut in weight, is treated as deceptive. The number is real. The word “greener” isn’t, because shoppers hear a broad improvement rather than a weight change. Spell out the weight reduction and the problem goes away.
A picture is a claim. An advertisement showing a laser printer sitting in a bird’s nest in a dense forest, with the line about buying the printer and making a change, is deceptive even though it never makes an express environmental statement. The imagery and the tagline together do the work. This is the example to remember when you’re looking at a shampoo bottle photographed on moss.
A tenth of a percent is not an improvement. A gas-powered lawn mower marketed with an eco-flavored name and a claim of improved fuel efficiency, where the actual gain was one tenth of one percent, is called out as technically true and still misleading. Scale matters, and the guides say so.
Percentages hide their own denominator. A rug advertised as having 50 percent more recycled content than before, where the recycled fiber went from 2 percent of the product to 3 percent, appears in the general principles section as an overstatement. The arithmetic is right. The impression is wrong.
Why the FTC never wrote a definition for “sustainable”
Part 260 runs to 17 sections. They cover recyclable and recycled content, compostable and degradable, refillable, source reduction, renewable energy and renewable materials, carbon offsets, ozone claims, and the free-of and non-toxic claims that double as safety statements.
There is no section on “sustainable.”
Those sections get specific in a way the word never could. The FTC’s plain-language summary of the guides says an unqualified recyclable claim needs a qualifier when recycling facilities aren’t available to at least 60 percent of consumers or communities, and that an unqualified degradable claim requires the whole item to return to nature within a reasonably short time after normal disposal, which the agency puts at about one year for solid waste. Those are thresholds you can argue about. “Sustainable” offers nothing to argue with.
That’s not an oversight. On its business blog in December 2022, the FTC explained that back in 2012 it had declined to issue guidance on organic claims for non-agricultural products and had found insufficient evidence on sustainable claims, and it asked whether those decisions should be revisited. The agency announced it was taking a fresh look at the guides, with a Federal Register notice that opened with 19 questions and a comment deadline of February 21, 2023.
So when a package says “sustainably sourced,” the legal situation is this. The phrase has no definition anywhere in federal regulation. It is still subject to the general principle in section 260.4, because it is about as general an environmental benefit claim as a company can make. On the guides’ own logic, an unqualified version of it is the kind of claim a marketer shouldn’t make at all.
The science underneath is not settled either
The regulatory silence isn’t arbitrary. Measuring sustainability is genuinely hard.
A 2021 systematic review in The Lancet Planetary Health went looking for scientific models that score individual foods on environmental impact, the kind of thing a label would have to rest on. It found ten. All ten counted greenhouse gas emissions and eight counted water use, but only six also looked at nutrition. The review flagged inconsistent food classification, methods too unclear to replicate and unclear cutoff values, and concluded that standardized labeling would need agreed components and reference values that don’t exist yet.
A 2024 review in Frontiers in Nutrition reached a matching conclusion on the consumer side. Few countries have implemented sustainability labels, and the evidence on whether eco-labels move food choices is mixed rather than consistent. The authors treat eco-labeling as one tool inside a larger policy set, not as a fix on its own.
Put those together and the regulatory gap makes sense. You can’t write a rule for a word when the measurement behind it is still being argued about.
When a sourcing claim is simply wrong
Sourcing claims have their own failure mode, and the clearest example the FTC has published involves bamboo.
The agency’s guidance for businesses is blunt about the chemistry. Nearly everything sold as bamboo fabric is rayon, a manufactured fiber. Bamboo can serve as the source plant, but the process dissolves it, and no trace of the plant survives into the finished fiber. The FTC also notes that making rayon uses harsh chemicals and releases hazardous air pollutants.
That matters because the appeal rests entirely on the plant. Bamboo grows fast and needs little pesticide, and both of those things are true. Neither carries through to the rayon. The FTC’s position is that a textile can be called bamboo only if it’s made of bamboo fiber, and that bamboo-derived rayon should be identified by its generic name or as rayon made from bamboo. That guidance has been on the agency’s site since August 2009.
One detail there applies to every sourcing claim, not just fabric. The FTC says a seller needs competent and reliable evidence, and that relying on what someone else told you does not count. A supplier’s word is not evidence.
This is the structural problem with “sustainably sourced.” Sourcing happens several steps away from the company printing the label, often in another country, often through brokers. The claim is about a part of the supply chain the seller may not have seen.
Seals, certifiers, and the question they rarely answer
If a general claim is weak, a seal looks like the fix. Sometimes it is. Section 260.6 of the guides explains when it isn’t.
Implying that an independent third party certified a product when that hasn’t happened is deceptive. Using a certifier’s name, logo or seal can amount to an endorsement, which pulls in the FTC’s Endorsement Guides at 16 CFR Part 255. And certification doesn’t relieve a company of substantiating every claim the seal reasonably communicates.
The sharpest rule is this one. If a seal doesn’t convey what it’s based on, shoppers will read it as a general environmental benefit claim, and companies should avoid seals that don’t disclose their basis. A green leaf in a circle with no words is, in the agency’s reading, a broad claim with no support.
The examples are specific. A seal a manufacturer awarded itself is deceptive unless the advertisement says so and limits what it covers. A seal that only shows membership in an organization, where nobody evaluated the product, is deceptive. A certifier whose standards look consensus-based, but where industry members can veto changes despite a non-industry majority on the board, produces a deceptive claim. Even a seal awarded after evaluating 35 separate attributes is likely deceptive on its own, because shoppers read it as all-encompassing, though it can work with clear qualifying language and a website listing what was assessed.
A usable test for whether a certifier is real
Buried in a footnote to that section is the most practical thing in Part 260. The guides reference the federal definition of a voluntary consensus standards body, which has five attributes: openness, balance of interests, due process, an appeals process, and consensus.
That’s a checklist you can apply to any seal. Can outsiders participate? Is any one interest group in control? Is there a written procedure? Can a decision be challenged? Was the standard agreed or imposed? If a certifier’s website won’t answer those, you’re looking at a logo rather than a standard.
Hold that against USDA organic. Under the Agricultural Marketing Service’s rules, an organic label has to be reviewed and approved by a USDA-accredited certifying agent before a company uses it, and the permitted wording changes at defined ingredient thresholds, with the seal barred below a certain level. That’s what a claim with a government standard behind it looks like.
A ten-second test, and what to do with a claim that fails it
This is a reading routine for a store aisle, ordered by what pays off fastest.
- Is a specific attribute named? “Sustainably sourced” names nothing. “Contains 40 percent post-consumer recycled fiber” names something. No attribute means you have a mood, not a claim.
- Is there a number and a basis for comparison? Greener than what, measured when? A comparison with no reference point can’t be checked by design.
- Does it say what it’s about? Product, package, one ingredient, or the company’s office electricity? These get blurred constantly.
- If there’s a seal, who issued it and what did they look at? Spend thirty seconds on the certifier’s site. No written standard and no list of what was evaluated means the mark is decoration.
- Does the size of the claim match the size of the change? One tenth of a percent, or 2 percent moving to 3 percent, is not a headline.
A claim that fails leaves you two reasonable options. Buy the product anyway, for reasons that have nothing to do with the claim. Or report it. The FTC takes complaints at ReportFraud.ftc.gov and at 1-877-FTC-HELP, and complaints are how enforcement cases start.
One boundary worth drawing. Some green claims double as safety claims, and those are governed separately: free-of claims and non-toxic claims each have their own section in Part 260, with their own evidence requirements. A label is never a safety finding about your body. If a product causes a rash, swelling, headache, or any breathing difficulty that starts after you begin using it, stop using it and call your clinician. Difficulty breathing is an emergency, not a labeling question.
What to take away
Stop sorting green claims into true and false. Sort them into specific and general.
A general claim, meaning anything that gestures at the environment without naming what changed, is the category the FTC’s own guides tell companies to avoid making. When you see one, you’re not looking at a claim that failed to prove itself. You’re looking at a claim that was never shaped so it could be proved.
A specific claim gives you something to check: a named attribute, a number, a basis for comparison, a certifier with a published standard. You may never check it, and that’s fine. What matters is that it could be checked, because under federal deception law a company has to be able to back up every reasonable reading before it prints a word.
That’s the line. One side can be verified. The other side exists to make you feel a certain way at the shelf.
Sources
- Federal Trade Commission. “Green Guides (16 C.F.R. Part 260).” ftc.gov
- Federal Trade Commission. “Environmental Claims: Summary of the Green Guides.” ftc.gov
- Electronic Code of Federal Regulations (U.S. Government Publishing Office). “16 CFR Part 260, Guides for the Use of Environmental Marketing Claims.” ecfr.gov
- Electronic Code of Federal Regulations (U.S. Government Publishing Office). “16 CFR 260.3, General principles.” ecfr.gov
- Electronic Code of Federal Regulations (U.S. Government Publishing Office). “16 CFR 260.4, General environmental benefit claims.” ecfr.gov
- Electronic Code of Federal Regulations (U.S. Government Publishing Office). “16 CFR 260.6, Certifications and seals of approval.” ecfr.gov
- Federal Trade Commission. “FTC Environmental Marketing Guides: Is it time for a change of green-ery?.” ftc.gov
- Federal Trade Commission. “How to Avoid Bamboozling Your Customers.” ftc.gov
- USDA Agricultural Marketing Service. “Labeling Organic Products.” ams.usda.gov
- PubMed. “Bunge AC, Wickramasinghe K, Renzella J, et al. "Sustainable food profiling models to inform the development of food labels that account for nutrition and the environment: a systematic review." The Lancet Planetary Health, 2021. DOI: 10.1016/S2542-5196(21)00231-X.” doi.org
- PubMed. “Tiboni-Oschilewski O, Abarca M, Santa Rosa Pierre F, et al. "Strengths and weaknesses of food eco-labeling: a review." Frontiers in Nutrition, 2024. DOI: 10.3389/fnut.2024.1381135.” doi.org