Greenwashing has a copy problem. Here's how to fix it.
The accusation that sustainability marketing is mostly greenwashing isn't wrong. But it's only half right. The other half is this: most brands doing real sustainability work are also still writing greenwashing copy, because the copy conventions of sustainability marketing were set by the brands doing it badly.
The vocabulary itself has been corrupted. "Eco-friendly." "Sustainable." "Responsibly sourced." "Carbon neutral." Words that started with specific meaning have been stripped of it by overuse from brands who couldn't back them up.
The copy still sounds sustainable. It just doesn't mean anything anymore. If you're a brand doing the actual work, you have a copy problem.
The two rules we apply
We built a Carbon-Smart practice precisely because we got tired of writing the same flat, defensive, indistinguishable sustainability copy for clients who deserved better. Here are the only two rules we run by.
Rule one. A claim without a number isn't a claim.
"We use renewable energy" is greenwashing. "We use 87 percent renewable energy across our European operations" is a fact. The first one belongs in a marketing brief. The second one belongs on a billboard. If you can't put a number behind the word, drop the word. Replace it with what is actually true.
Rule two. Show the trade-off.
The most credible sustainability copy admits what's hard.
"This product costs more because we pay the people who make it."
"This packaging adds 6 grams of glass weight, which we offset by shipping less air."
"This launch is delayed by a quarter because the supply chain audit found a problem we won't ship around."
Real sustainability has friction. Copy that pretends otherwise is the tell.
What this looks like in practice
We audited a SaaS client's sustainability page last year. The headline was: "Built sustainably from day one." Five sentences below it described the product. No mention of energy use. No mention of carbon. No mention of the dev team's actual practices.
We replaced it with:
"Our customer dashboards run on 91% renewable-powered infrastructure. The other 9% is carbon-offset through verified Indian reforestation projects. Here's the audit trail."
Same conviction. Verifiable claim. Friction made visible (only 91 percent, not 100). Time-on-page tripled. The page is now their highest-converting B2B sales asset.
What's next
Sustainability marketing is at the moment social-impact marketing was in 2018. The early adopters who do it credibly will be impossible to copy in five years. The brands still hiding behind "eco-friendly" will spend the next decade trying to rewrite copy that doesn't sound like everyone else's.
The fix isn't a sustainability strategy. The fix is honesty with numbers.