How to verify sustainability claims against the Green Claims Code

To avoid "greenwashing" and potential legal action from the Competition and Markets Authority (CMA), you must ensure every environmental claim you make—from "organic cotton" to "eco-friendly packaging"—is truthful, clear, and backed by evidence. Under the Green Claims Code, businesses are legally required to provide honest information that does not mislead consumers about their environmental impact.

What is the Green Claims Code?

The Green Claims Code was introduced by the CMA to help businesses comply with consumer protection law. If you describe your clothing as "sustainable," "green," or "kind to the planet," you are making an environmental claim. If these claims are found to be misleading, your business could face heavy fines, legal action, and significant damage to your reputation.

The Six Principles of the Green Claims Code

When reviewing your marketing materials, website, and product tags, ensure every claim satisfies these six core principles:

1. Be truthful and accurate: Your claims must be factually correct. You cannot say a t-shirt is "100% recycled" if only the polyester element is recycled.
2. Be clear and unambiguous: Avoid vague terms like "eco-friendly" or "sustainable" without explaining what they mean in your specific context.
3. Do not hide important information: You shouldn't highlight a small "green" feature while ignoring a massive negative environmental impact.
4. Only make fair and meaningful comparisons: If you claim your production uses "50% less water," you must state what you are comparing it to (e.g., industry averages or your previous collection).
5. Consider the full life cycle: A claim should account for the entire life of the garment, from raw material sourcing to disposal.
6. Be substantiated: You must have robust, up-to-date evidence to support your claims.

Step-by-Step: How to Verify Your Claims

Follow these steps to ensure your clothing brand stays on the right side of the law:

1. Audit Your Marketing Materials

Review everything a customer sees: website banners, social media captions, product descriptions, swing tags, and even the "About Us" page. Look for keywords like "natural," "biodegradable," "low carbon," or "ethical."

2. Gather Your Evidence

For every claim you make, you need a "paper trail." If you say your garments are made from organic cotton, you should hold copies of the GOTS (Global Organic Textile Standard) certificates from your suppliers. Keep these in a dedicated folder for easy access.

3. Be Specific with Your Language

Swap vague buzzwords for specific facts. Instead of saying "sustainable leggings," try "leggings made from 78% regenerated nylon." This is much harder to dispute and provides more value to the customer.

4. Check Your Visuals

The Green Claims Code also covers imagery. Using lots of green leaves, earth icons, or "official-looking" but fake eco-seals can be considered misleading if the product doesn't actually have a high environmental standard.

Tip: If you cannot prove a claim with data or certificates today, remove it. It is better to be humble about your progress than to be caught misleading your customers.

Common Pitfalls in the Clothing Industry

Vague Claim (Avoid)	Compliant Claim (Better)
"This collection is carbon neutral."	"We offset the carbon emissions from the shipping of this collection via [Project Name]."
"Ethically made garments."	"Our factory is SEDEX audited to ensure fair wages and safe working conditions."
"Eco-friendly packaging."	"Our mailing bags are made from 100% compostable cornstarch."

By following these guidelines, you build a brand based on transparency. Customers interested in sustainable fashion value honesty over perfection, so being clear about your journey will likely earn you more loyalty than exaggerated "green" promises.