GOTS vs OEKO-TEX vs Demeter — What Each Certification Actually Means

Every sustainability-adjacent brand in your feed claims a certification. Most of them are using the word 'certified' loosely — sometimes pointing at real audits, sometimes at self-declared claims, sometimes at certifications that cover only one narrow step of a long supply chain. This article is a careful read on the three certifications that dominate the clean-textile space: GOTS, OEKO-TEX, and Demeter, plus the SEKEM / Economy of Love framework. What each actually audits, where they overlap, and when each one matters. Educational, not compliance advice.

The vocabulary problem

'Organic' on a textile label can mean any of the following — all of them legal:

• Organic fiber: The cotton (or linen, hemp, wool) was grown on a certified-organic farm. Nothing about what happened to that fiber afterwards is audited.
• Organic fabric: The fabric was made from organic fiber. Still doesn't audit finishing, dyeing, or labor.
• Organic content standard (OCS): A tracer certification that verifies organic fiber made it into the finished garment, without requirements on what happened in between.
• GOTS-certified garment: The finished garment was certified under a chain-of-custody audit that covered every processing stage.

These are all 'organic' in common use. They are not equivalent. A $4 'organic cotton' t-shirt from a fast-fashion chain may be OCS-certified on the cotton only; a $48 GOTS-certified bra is audited across every step the fiber took to reach your skin. The certifications are what translates marketing vocabulary into auditable claims.

GOTS — the supply-chain auditor

The Global Organic Textile Standard (GOTS) is the most comprehensive textile certification in commercial use. It was founded in 2002 and is maintained by a consortium of organic-farming and textile-industry nonprofits headquartered in Germany. GOTS audits every stage of the supply chain from farm to retail, against a single unified standard.

What GOTS requires

• Fiber: Minimum 70% certified organic natural fiber (95% for the highest label). Organic status verified via independent farm audits under recognized national programs (USDA Organic, EU Organic, India NPOP, etc.).
• Processing chemicals: All inputs used in ginning, spinning, knitting, weaving, dyeing, and finishing must meet strict environmental and toxicological criteria. GOTS maintains a public 'positive list' of approved chemicals; everything else is prohibited.
• Restricted substances: Formaldehyde, azo dyes that release carcinogenic amines, heavy metals, chlorinated phenols, functional nano-materials, and PFAS are all prohibited across the chain.
• Wet processing: Water use monitored. Wastewater must meet defined quality thresholds before discharge. No untreated discharge to waterways.
• Labor: All facilities must meet ILO core labor conventions — no forced labor, no child labor, freedom of association, non-discrimination, fair wages relative to local living-wage benchmarks.
• Packaging: No PVC packaging. Paper packaging must be FSC or PEFC certified or recycled.
• Chain of custody: Every step from farm to retailer is audited annually by independent certifiers (Control Union, ECOCERT, etc.), with unannounced visits permitted.

When GOTS matters most

For clothing that sits against your skin all day — underwear, base layers, bras, pajamas, baby clothes — GOTS is the certification that actually protects you. Because it audits chemical inputs at every stage, it catches the azo dyes, formaldehyde wrinkle-finishers, and PFAS repellents that slip past fiber-only certifications. Net Positive's entire catalog is GOTS-certified end-to-end.

OEKO-TEX — the finished-product tester

OEKO-TEX Standard 100 is a Swiss-German testing certification that audits finished textiles for the presence of harmful substances. It's been around since 1992 and is the most widely-adopted skin-safety certification in commercial textiles.

What OEKO-TEX tests for

• ~300 harmful substances — pesticide residues, heavy metals, formaldehyde, chlorinated phenols, color-fastness under sweat and saliva, pH balance, and more.
• Limit values that are typically stricter than any national legal requirement. OEKO-TEX sets the bar at what's demonstrably safe, not what's merely legal.
• Four product classes:
  • Class I: Baby / infant textiles (strictest limits)
  • Class II: Skin-contact adult textiles (underwear, bedding — second-strictest)
  • Class III: Non-skin-contact (outerwear)
  • Class IV: Decoration (curtains, upholstery)

Where OEKO-TEX is limited

OEKO-TEX does not certify that a textile is organic, that its supply chain is fair-labor, or that the farm practices were ecological. It certifies that the finished garment is skin-safe. For maximum protection, brands pair OEKO-TEX with GOTS so that both the inputs (GOTS) and the outputs (OEKO-TEX) are independently verified. Net Positive's catalog is certified to OEKO-TEX Standard 100 Class II (the second-strictest class, used for skin-contact underwear).

Demeter — the farm itself

Demeter is the biodynamic farming certifier, originating from Rudolf Steiner's 1924 agricultural lectures and maintained today by Demeter International (~60 countries). Biodynamic farming is a stricter standard than organic — not just 'no synthetics' but an affirmative requirement that the farm function as a self-contained ecological system.

What biodynamic actually means

• Closed-loop: Fertility comes from on-farm sources (compost, cover crops, crop rotation, animal manure from the farm's own animals) rather than external inputs.
• Biodiversity: Minimum 10% of the farm area must be dedicated to natural biodiversity reserves (hedgerows, woodland, water features).
• No synthetic inputs: No synthetic fertilizers, pesticides, herbicides, or fungicides. No GMOs.
• Specific preparations: Biodynamic farms apply a set of 'Demeter preparations' (fermented herb and mineral mixtures) to compost and soil. The effect is primarily microbiological; the preparations are debated in conventional agriculture but empirically associated with soil-health improvements.
• Calendar-based planning: Planting and harvest timing follows a lunar / astronomical calendar. (Aesthetically esoteric to some; practically, it functions as a structured crop-rotation discipline.)
• Livestock ethics: Animals kept in species-appropriate conditions; no dehorning; no routine antibiotics.

Biodynamic vs organic

All Demeter-certified farms are also organic-certified, but not all organic farms meet Demeter's biodynamic standard. Biodynamic requires the farm to build soil health actively, not just avoid harming it. Net Positive's cotton is Demeter-certified, grown by the Egyptian Biodynamic Association (EBDA) in the Nile delta.

Economy of Love — the fair-trade layer

The Economy of Love (E.O.L.) protocol is a fair-trade framework developed by SEKEM (the parent cooperative of EBDA) that goes beyond typical fair-trade certifications:

• Guaranteed minimum farmer incomes pegged to local living-wage standards.
• Community infrastructure investment: schools, clinics, vocational training.
• 80% of carbon-credit revenue from verified carbon sequestration on biodynamic farms flows back to the farmers themselves, not to the brand or the cooperative's operating budget.
• Independent auditing by ECOCERT Fair for Life.

This is not common. Most fair-trade frameworks return some premium to farmers; few direct the entirety of a carbon market's upside back to the farming communities doing the sequestration.

How the certifications fit together

For a garment with maximum auditable credibility, the stack looks like:

1. Demeter on the farm — biodynamic farming, builds soil.
2. Economy of Love on the labor + revenue — fair pay, community infrastructure, carbon-credit revenue sharing.
3. GOTS across the supply chain — no synthetic inputs at any processing stage, labor audited, wastewater managed.
4. OEKO-TEX Class II on the finished product — verified skin-safe for 300+ substances.

A garment carrying all four is rare. Net Positive's catalog carries them all. A garment carrying only OCS or only 'organic cotton' is doing one-quarter of the work and marketing it at full credit.

What to ask brands

• "Is the finished garment GOTS-certified, or just the cotton fiber?"
• "What OEKO-TEX class is this certified under — Class II for skin contact, or Class III for outerwear?"
• "Where was it spun, woven, dyed, and sewn? Are those facilities audited?"
• "What dyes are used — azo, reactive, or plant-based?"
• "Who farms the cotton, and how are the farmers paid?"

Brands doing the work will have answers. Brands not doing the work will redirect.

The quick version

• GOTS audits the supply chain from farm to retail: fiber, chemicals, labor, wastewater, packaging. Most comprehensive textile certification.
• OEKO-TEX tests the finished garment for ~300 harmful substances at limits stricter than legal requirements. Class II is the skin-contact standard.
• Demeter certifies biodynamic farming — stricter than organic, requires affirmative soil building, 10%+ biodiversity reserve, closed-loop fertility.
• Economy of Love is a SEKEM-developed fair-trade protocol that returns 80% of carbon-credit revenue to farmers.
• These are complementary, not redundant. GOTS covers inputs; OEKO-TEX covers outputs; Demeter covers the farm; E.O.L. covers the labor + revenue.
• A garment carrying all four is rare and expensive. A garment carrying only 'organic cotton' on the tag is doing less work than the copy suggests.

Related reading

• Botanical dyes vs synthetic dyes — the actual difference.
• Organic cotton for sensitive skin + eczema — what the research shows.

Shop certified-clean intimates

• Keyhole Bra · matcha
• Botanical Mid-Rise Brief
• Full Net Positive catalog