Written by the Fluye Bottle team
Every brand is sustainable now. The packaging says it, the website says it, the Instagram copy with the green background says it. If we added up the impact that all brands in the world claim to have, we would have solved climate change twice over.
Greenwashing in sustainable brands is not always a deliberate lie. Sometimes it's simply a promise too grand for the facts that back it up. The result is the same: consumers can't distinguish what's real from what's marketing with good lighting.
This article isn't about calling anyone out. It's about giving concrete tools to those who want to buy with discernment, without having to become an expert in corporate sustainability before choosing a bottle or a corporate gift.
What is greenwashing and why is it so difficult to detect?
Greenwashing is any communication that exaggerates, distorts, or fabricates environmental or social attributes of a product or company. It doesn't have to be entirely false to be greenwashing. Often it's a half-truth presented as the whole truth.
The difficulty in detecting it lies in the fact that the mechanisms are the same ones used by any good brand communication: attractive images, emotive language, certifications with good-sounding names even if no one verifies them. For the average consumer, distinguishing between a real commitment and a communication one is almost impossible without additional information.
The European Union has been trying to regulate it for years. The Green Claims Directive, which will progressively come into force, obliges companies to verify their environmental claims before communicating them. But regulation always lags behind marketing creativity.
The signs that something is amiss
You don't have to be a sustainability analyst to identify the most common patterns. Some questions do a lot of the work.
Are there numbers, or just words? A brand that truly measures its impact can tell you how many kilos of plastic it has avoided, how many liters of water it has funded, how many tons of CO₂ it has offset. A brand that only has communication impact uses adjectives: "sustainable," "committed," "responsible." Adjectives without numbers are a red flag.
Is the certification verifiable? There are recognized certifications with real auditing processes: B Corp, Fairtrade, FSC, Global Recycled Standard. And there are seals that a company creates or pays to use without clear external criteria. When you see a seal, ask who issues it and how it is audited.
Is the main product consistent with the message? An airline that offers you to offset your flight by buying trees while operating old fleets is engaging in structural greenwashing. The underlying product contradicts the message. The same principle applies in any sector.
Is sustainability an add-on or is it embedded in the business model? There's a difference between a company that donates 1% of its profits to environmental causes and one whose business model directly depends on generating measurable impact. The former may be sincere, but the impact is marginal. The latter has structurally aligned incentives.
What differentiates purpose marketing from verifiable impact
Purpose marketing tells a story. Verifiable impact shows data that an external party can check. The practical difference is clearer than it seems in theory.
A brand with verifiable impact can tell you the name of the project it funds, its geographical location, the number of people benefited, and the source of that information. It can show you photos of the place, not stock images. It can tell you when it started and what has happened since, including what didn't go well.
A brand with purpose marketing tells you the story of why the founder decided to "do something different" and why their product "is part of a movement." The story may be nice. But if there's no data to back it up, it's communication, not impact.
The question that separates everything is simple: can I independently verify this? If the answer is no, skepticism is reasonable.
How we look at our own numbers (even if they're not for bragging)
Here's what Fluye does and can show: each bottle sold funds 10 liters of drinking water through the Los Sin Agua project, using fog catchers in communities in Lima without access to public networks. The projects have concrete geographical locations, real photos, and data on liters captured.
The accumulated impact is on our impact page, updated with real data from the period. These are not projections or marketing estimates. These are the numbers we have, including the small ones.
Why are we telling you this here? Because it's consistent with what we just wrote. There's no point in writing about greenwashing and not showing what we do and how it can be verified. If something we say doesn't add up, it's information the reader deserves to have.
What to look for before buying from a brand that claims to be sustainable
A three-step process that takes no more than five minutes.
First, look for the numbers. Not the adjectives, the numbers. Liters, kilos, tons, people. If there are none, sustainability is primarily communication.
Second, check if the certification has an external audit. A minute on Google with the certification name plus "audit" or "verification" tells you if it's a seal with real processes or a logo with good typography.
Third, see if the business model depends on impact or if impact is an addition to the business model. It's not the same to sell t-shirts and donate 2% to NGOs as it is to have a model where impact is part of the product from design.
None of these steps guarantee that a brand is perfect. They do guarantee that you are making the decision with more information than you would have without them.
If you are evaluating options for sustainable corporate gifts and want to compare with discernment, the same process applies. Trends in corporate gifts in 2026 show a clear pattern: more companies are asking for impact metrics from their suppliers before signing, and suppliers who cannot provide them are losing contracts regardless of price. The same questions a good B2B buyer asks are exactly what any consumer should ask before buying from a brand that declares itself sustainable.