A “planet-friendly” bottle, a “carbon-neutral” trip, a collection bearing a green leaf: these advertising shortcuts are about to lose some of their room for manoeuvre. As 27 September 2026 approaches, the scheduled date for the application of national rules implementing EU Directive 2024/825, brands must reassess their wording. The challenge goes beyond replacing a slogan. They must be able to link a promise to a defined scope, a methodology and verifiable evidence. For communications professionals, environmental messaging is becoming less a matter of language and more a discipline of substantiation.
A firm timetable, with national implications still to be clarified
Adopted on 28 February 2024, the directive aims to empower consumers to contribute to the green transition. In particular, it amends European rules on unfair commercial practices and consumer rights. Member States were required to adopt their transposition measures by 27 March 2026, with application from 27 September. This timetable is set out in the adopted text; national arrangements and enforcement practices must be checked country by country.
This change does not start from scratch. Misleading claims were already subject to penalties. In France, consumer law and specific rules governing certain carbon-neutrality claims had already begun to tighten the constraints. But the directive adds explicit prohibitions to the European list of practices deemed unfair in all circumstances. It thus narrows the space in which vague wording could appear acceptable as long as nobody specifically challenged its meaning.
“Green” will no longer be enough
The first target is generic environmental claims where no relevant, recognised excellent environmental performance can be demonstrated. Terms such as “ecological”, “green” or “environmentally friendly” are directly affected. The problem lies in their breadth: consumers may understand that a product offers an overall environmental benefit, while the advertiser can point only to a limited improvement in packaging or energy consumption.
The text sets demanding benchmarks for this recognised performance, including the EU Ecolabel and certain officially recognised labelling schemes complying with EN ISO 14024. A favourable internal study therefore does not automatically make a generic claim lawful. Nor does recognition relating to a particular aspect justify a promise unrelated to that aspect.
The directive also prohibits presenting a claim concerning only one element or activity as applying to the entire product or business. Improved packaging does not turn an entire range into an environmentally friendly solution. Communications will have to abandon this convenient leap from a favourable detail to an overall benefit.
In-house labels and carbon neutrality under pressure
The second area is sustainability labels. The directive prohibits displaying them when they are not based on a certification scheme or established by a public authority. A badge invented by a brand to distinguish its own “good products” therefore becomes particularly risky. Attractive visual branding and a page of criteria do not, on their own, constitute a compliant certification scheme.
For private schemes, the text requires, among other things, third-party verification and procedures ensuring the independence and competence of the monitoring process. The aim is not to ban all private labels, but to distinguish a structured assurance system from a simple promotional symbol. Retailers will also have to examine their filters, selections and icons: a commercial interface can convey a promise just as effectively as a poster.
The third major shift concerns claims that a product has a neutral, reduced or positive environmental impact in terms of greenhouse gas emissions, when those claims rely on carbon offsetting. A service marketed as “carbon-neutral” through the purchase of credits falls within this scope. This does not prohibit financing climate projects or discussing them honestly. It prohibits turning that contribution into an environmental characteristic of the product.
Tomorrow’s promises must be planned today
Future commitments are also regulated. To announce future environmental performance, a company must rely on clear, objective, publicly available and verifiable commitments set out in a detailed and realistic implementation plan. This must include measurable, time-bound targets and the resources needed to achieve them. Regular verification by an independent third-party expert is required, with findings accessible to consumers.
The slogan “zero emissions tomorrow” can therefore no longer stand in for a strategy. Companies must show the path, not just the horizon. This requirement should encourage communications teams to work earlier with operations, procurement and finance. That is a likely organisational consequence of the text, not a guarantee that all companies will have actually transformed their practices by September.
From the creative studio to the evidence file
In practical terms, the first step is to take stock of messaging: packaging, product pages, advertisements, social media posts, influencer scripts and sales pitches. Old campaigns sometimes remain visible long after they have run. A promise removed from the main website may survive on a marketplace, in a sponsored video or on an in-store display.
Each claim should then have a supporting file specifying what it covers, its justification and its period of validity. Take a hypothetical example: “packaging containing 50% recycled plastic”. This wording is more precise than “planet-friendly packaging”, but it still requires defining the components concerned, documenting the stated proportion and avoiding any presentation suggesting that the entire product is recycled. Precision never removes the need for evidence.
This discipline can change the creative process itself. Rather than devising a sweeping promise and then looking for ways to defend it, teams would start with a documented improvement and build a proportionate narrative around it. A measured reduction, demonstrable repairability or a traceable material offers less lyricism, but more substance. A link or QR code can provide additional information; it must not be used to quietly correct a misleading headline.
Do not confuse the legislation, or mistake compliance for silence
Directive 2024/825 must be distinguished from the European proposal on substantiating explicit environmental claims, often referred to as “Green Claims”. These are two separate legislative files. It would be misleading to infer from the text adopted in 2024 alone that all green communications must undergo mandatory prior approval. To prepare for September 2026, companies must start with the obligations that actually apply, rather than conflate political announcements with adopted legislation.
What happens now? The most credible scenario is a filtering process: fewer sweeping promises and more narrowly defined, documented statements. Some brands may choose silence out of caution; others would benefit from explaining their limitations as well. Environmental communications are not disappearing. They could become more useful, provided the evidence does not remain locked away in a legal file but becomes understandable at the point of decision.
