The Three Eco Claims Buyers Actually Ask For
When a brand says “make it sustainable,” it usually means one of three things — and each maps to a different standard. Knowing which one you need saves weeks of back-and-forth and avoids paying for a certificate you can't use.
| Claim | What it proves | Common standard | Who checks it |
|---|---|---|---|
| “Safe for skin / no harmful chemicals” | The finished garment is tested free of banned substances (pH, formaldehyde, heavy metals, azo dyes). | OEKO-TEX Standard 100 | Independent lab (e.g. TESTEX, Hohenstein) |
| “Made with recycled content” | The fiber contains recycled material, tracked through a certified chain of custody from source to finished goods. | GRS (Global Recycled Standard) | Certification body (e.g. Control Union, CU) |
| “Lower environmental impact” | The factory manages energy, water and chemistry responsibly — verified through a social + environmental audit. | BSCI / WRAP / ISO 14001 | Auditor (e.g. SGS, TÜV, Bureau Veritas) |
Key point: These are not interchangeable. OEKO-TEX says the shirt is safe to wear; GRS says the fiber is recycled; a social/environmental audit says the factory behaves responsibly. A buyer targeting the EU market under the upcoming Digital Product Passport often needs the first two at minimum — and should never claim “recycled” without GRS or an equivalent chain-of-custody certificate, or it is greenwashing.
OEKO-TEX Standard 100: What a Buyer Should Know
OEKO-TEX Standard 100 is a product-level test, not a factory audit. An accredited lab tests the actual garment (or its components) for a long list of harmful substances. It is the most widely recognized “safe to wear” certificate in the EU and is frequently requested by European retailers.
- It is issued per product article / fabric composition, and must be renewed (typically annual) — a factory's past certificate does not automatically cover a new style unless that style is tested.
- Product Class matters: Class I (babies, most stringent) through Class IV (decorative). Most apparel for general wear falls in Class II; baby/children's wear should be Class I.
- Working with a factory that already holds OEKO-TEX means your base fabric may already be certified, shortening your time-to-market — but confirm the specific article number covers your style.
GRS: Selling “Recycled” Without the Legal Risk
The Global Recycled Standard verifies recycled content and tracks it through every handoff — from recycled fiber supplier to spinner, dyer, and final garment maker. For a brand, GRS is what lets you print “Made with 50% recycled polyester” on a hangtag and defend that claim to a regulator.
- Chain of custody is the hard part: every supplier in the line must hold GRS (or an equivalent like RCS) for the claim to survive audit.
- There is a minimum recycled content threshold (currently 20% for GRS labeling, 50% for the GRS logo). Below that, you can still use recycled fiber but cannot use the marks.
- Transaction certificates (TC) are issued per shipment — keep them; they are your proof of recycled content for customs and buyers.
Low-Impact Fabrics & Practical Swaps
Beyond certificates, the single biggest lever is fiber choice. The table below shows common swaps a cotton knitwear factory can offer without changing your silhouette or blowing up the cost.
| Conventional | Lower-impact swap | Trade-off |
|---|---|---|
| Virgin polyester | Recycled polyester (rPET, GRS) | Slightly higher cost; same hand-feel |
| Conventional cotton | Better Cotton / Organic (GOTS) / Recycled cotton | Supply must be booked early; price varies |
| Standard dyeing | Low-liquor / dope-dyed / solution-dyed | Fewer color options in some methods |
How to Brief a Factory for a Sustainable Line
- Decide the claim first: safe-to-wear (OEKO-TEX), recycled (GRS), or responsible-made (BSCI/WRAP). This determines which certificates you and your suppliers must hold.
- Ask the factory for valid certificate numbers and the issuing body — verify them on the public database (OEKO-TEX and GRS both have lookup tools) before committing.
- Lock the fiber source early. Recycled and organic yarns have longer lead times; book them with your fabric plan, not after sampling.
- Request Transaction Certificates (GRS) per shipment and keep OEKO-TEX article numbers on file for each style.
FAQ
What does OEKO-TEX Standard 100 actually certify?
It is a product-level test, not a factory audit. An accredited laboratory tests the actual garment or its components against a long list of harmful substances. It is issued per product article and fabric composition, and must be renewed — typically annually — so a factory's past certificate does not automatically cover a new style.
Can I claim "recycled" without GRS certification?
You can use recycled fibre, but you cannot use the GRS marks. GRS verifies chain of custody through every handoff and sets a minimum recycled content threshold (currently 20% for GRS labelling, 50% for the GRS logo). Below that threshold the claim will not survive an audit.
Which eco claims are safe to put on my product page?
Decide which of the three claims you are actually making: safe-to-wear (OEKO-TEX), recycled (GRS) or responsibly-made (BSCI / WRAP). Each maps to a different standard and a different set of certificates you and your suppliers must hold. Naming the wrong one is how greenwashing happens.
What low-impact fabrics can you offer?
Beyond certificates, fibre choice is the single biggest lever — and it can usually be changed without altering your silhouette or blowing up the cost. We can swap in lower-impact and recycled-content fibres within your existing styles; ask us for the options for your specific base garment.