CERTIFICATIONS
A clothing label can carry five different certifications and still leave out the thing that matters most to you. Each of the major textile certifications was designed to audit something specific. None of them audit everything. The brands that lean hard on certifications are usually doing it for what is covered, while the gaps are quiet.
This is what each of the most-cited certifications actually covers, what they do not cover, and how to read a brand's claims with that knowledge.
GOTS, Global Organic Textile Standard
What it covers. GOTS audits the full chain, from organic fibre cultivation through processing to the finished textile. On the agricultural side, the fibre must be grown without synthetic pesticides, herbicides, or fertilisers, on non-GMO seed, and the soil and water sources are part of the audit. On the processing side, GOTS sets limits on which dyes, bleaches, softeners, and finishing chemicals can be used. Wastewater treatment is required. Some basic ILO labour standards are included: no forced labour, no child labour, basic wage and hour rules. The full GOTS standard is published here.
What it does not cover. GOTS labour standards are baseline. They are not as comprehensive as Fair Wear Foundation on wages or working conditions. GOTS also does not audit transport, packaging, or end-of-life impact.
When you see GOTS on a label. It means a real, third-party audit covers the fibre and the processing. The version matters. "GOTS certified organic" is the strongest claim. "Made with GOTS certified cotton" is weaker, and means a portion of the cotton meets the standard but the finished garment may not have been audited as a whole.
OEKO-TEX Standard 100
What it covers. OEKO-TEX Standard 100 tests the finished textile for chemical residues. It checks for heavy metals, formaldehyde, banned dyes, pesticides, phthalates, and other substances on a regulated list. It is one of the most rigorous tests for what is actually present in the fabric you wear. The OEKO-TEX Standard 100 criteria are published here.
What it does not cover. OEKO-TEX is a safety test. It does not tell you whether the cotton was organic, whether the dye process was clean, or how the workers in the factory were treated. A garment can be 100% conventional polyester, made in a factory with no labour audits, and still be OEKO-TEX certified, because the fabric, when tested, came in under the chemical residue limits.
When you see OEKO-TEX on a label. It is a legitimate guarantee that the finished product is below regulated limits for harmful chemical residue. That is genuinely valuable, especially for next-to-skin garments and for sensitive-skin wearers. It is not a guarantee of anything else. The skin side of that is in why your sportswear makes you itch.
Fair Wear Foundation
What it covers. Fair Wear audits the human side of production. Wages, working hours, freedom of association, no forced or child labour, safe working conditions, formal employment. Audits happen at the factory level, repeatedly, with corrective-action plans for issues found. Fair Wear publishes its code of labour practices here.
What it does not cover. Fair Wear does not audit the fabric. A Fair Wear certified factory can produce 100% polyester garments with conventional dye processes. The certification is about the people making the garment, not the garment itself.
When you see Fair Wear on a label. The brand has committed to factory-level labour standards in its supply chain. This is meaningful. Most fast-fashion supply chains have nothing comparable. It does not tell you anything about the materials.
OCS, Organic Content Standard
What it covers. OCS verifies that a stated percentage of the fibre in a finished product is from organic sources. The chain of custody is audited. What it does not cover. OCS does not audit the processing, the chemicals used, the dye process, or the labour conditions. It is a fibre-content verification, full stop. When you see OCS on a label. The organic claim on the fibre is real. Everything else about how the garment was made is unaudited. OCS is sometimes used by brands that want a "made with organic cotton" claim without committing to GOTS-level processing standards.
What "eco" and "conscious" lines mean
Mostly, they mean nothing audited. These are brand-internal terms. There is no public standard, no third-party verification, and no consequence for using them. A brand can label any garment as "conscious" without changing anything about how it was made. When you see one of those terms, look for the actual certification or data behind it on the same product page. Often there is none. We say more about that in we are not perfect.
How to read a brand's certification claims
A few patterns that distinguish robust claims from marketing. Specific certification plus version. "GOTS certified organic" is specific. "Organic cotton" without a certification source is not. Percentage clarity. "92% GOTS organic cotton" tells you the percentage. "Made with organic cotton" does not, and often the percentage is small. Public chain of custody. Strong brands link to certificate IDs, factory lists, or audit reports. Weaker brands say "audited" without saying by whom. Multiple certifications. GOTS plus OEKO-TEX plus Fair Wear together cover most of what one certification alone misses. Limits on the claim itself. A brand that says "we are GOTS certified for our cotton, and working toward Fair Wear membership" is being more honest than a brand that calls itself "ethical and sustainable" without specifics.
Where LAINE HILL stands, with the gaps
We are GOTS certified for our organic cotton. That covers the fibre, the processing chemistry, and basic labour standards. We are not OEKO-TEX certified separately at this stage. The GOTS standard is stricter on most of the chemical residue parameters that OEKO-TEX tests, but the OEKO-TEX label is what consumers know, and we are evaluating whether to add it. We are not Fair Wear Foundation members yet. Our production happens in GOTS-audited facilities, which carries baseline ILO standards, but Fair Wear is more comprehensive on wages and working conditions specifically. This is a gap we plan to close.
Those are the certifications. They are useful. They are not the whole story. The honest version of "what is in this garment" includes the certifications, the percentages, the construction, the supply chain, and a brand willing to say what it does not yet have. The construction side of that is in why two leggings with the same composition feel different.
LAINE HILL
Continue reading
- We are not perfect. What we do, what we deliberately do not claim, and how we read greenwashing.
- Is recycled polyester actually sustainable. The four claims behind recycled activewear, fact-checked.
- Best natural fabrics for activewear. Cotton, merino, tencel, bamboo, hemp, modal, linen, compared.
What each certification covers
| Aspect | GOTS | OEKO-TEX 100 | Fair Wear | OCS |
|---|---|---|---|---|
| Organic fibre origin | Yes | No | No | Yes |
| Chemical processing limits | Yes | No (tests outcome only) | No | No |
| Finished-product chemical residue | Yes | Yes (primary scope) | No | No |
| Wages and working hours | Partial (basic ILO) | No | Yes (primary scope) | No |
| Water treatment | Yes | No | No | No |
| Audited supply chain | Yes (full) | No (finished product only) | Yes (factory level) | Partial |
| Independent auditors | Yes | Yes | Yes | Yes |
Common questions
What does GOTS certification mean?
GOTS, the Global Organic Textile Standard, audits both the agricultural side (organic fibre, no synthetic pesticides) and the textile-processing side (which dyes and finishing chemicals can be used, water treatment, worker safety in processing). It is one of the few labels that covers the chain from farm to finished product. It does not, however, audit fair labour wages. That is what Fair Wear Foundation covers separately.
Is OEKO-TEX the same as organic?
No. OEKO-TEX Standard 100 tests the finished product for chemical residues: heavy metals, formaldehyde, banned dyes, pesticides. It tells you the fabric is below specified safe limits at the moment of testing. It does not tell you whether the cotton was organically grown, whether the workers were paid fairly, or what the production environment was like. OEKO-TEX is a useful safety label. It is not an organic label.
What does Fair Wear Foundation audit?
Fair Wear Foundation audits factories on labour conditions: wages, working hours, safety, freedom of association, no forced or child labour. It covers the human side of production, not the fabric or the chemicals. A garment can be Fair Wear certified and made of conventional polyester. A garment can be GOTS certified and made in a factory not audited by Fair Wear.
Are there labels that mean nothing?
Some labels are robust audits with public standards. Others are brand-internal claims that look like certifications. 'Eco collection,' 'conscious line,' and 'responsible choice' usually have no third-party audit behind them. Read the small print. If a label does not link to a public standard or a verifiable issuer, treat it as marketing language.