Textile certifications have multiplied significantly in the past two decades, and the distinctions between them matter more than many buyers realize. A mill that is OEKO-TEX certified is not necessarily GOTS certified; a GOTS certification doesn’t cover the same claims as a Bluesign certification; and a BCI cotton mill may be using inputs that wouldn’t qualify for any organic standard. Understanding what each certification actually covers — and what it doesn’t — is essential for making meaningful sourcing decisions and communicating credibly with your customers about your supply chain.
OEKO-TEX Standard 100
What it covers: The OEKO-TEX Standard 100 is a product safety certification. It tests finished textile products (yarn, fabric, or garment) against a comprehensive list of harmful substances — over 100 chemical classes including pesticides, heavy metals, formaldehyde, azo dyes, and phthalates — and certifies that the tested product meets defined maximum limits.
The critical distinction: OEKO-TEX Standard 100 certifies the product, not the production process. A mill can use non-sustainable production practices, high water consumption, and conventional (non-organic) raw materials, and still receive OEKO-TEX Standard 100 certification if the finished product tests below the chemical limits. Conversely, a mill using organic fiber and sustainable processes would fail certification if it used an azo dye that breaks down to a prohibited amine.
Who audits it: OEKO-TEX Association member institutes (17 institutes globally, including TESTEX in Switzerland, HOHENSTEIN in Germany, and others). The member institutes conduct testing and issue certificates.
Certificate classes: There are four product classes based on the intended use and proximity to skin:
- Product Class I: articles for babies and young children (highest requirements)
- Product Class II: articles in direct contact with skin
- Product Class III: articles not in direct contact with skin (e.g., decorative fabrics)
- Product Class IV: furnishing materials (lowest requirements)
Verification: OEKO-TEX certificates are searchable at oeko-tex.com/en/our-standards/oeko-tex-standard-100 by company name and certificate number. Always verify directly — don’t rely on mill-supplied copies of certificates.
Validity: Annual renewal required. Check the certificate expiry date.
Who should require it: Brands selling to European markets, brands targeting consumers with sensitivities or infant/children’s products, any brand making product safety claims. OEKO-TEX Standard 100 has become a de facto baseline requirement for European apparel retail.
GOTS (Global Organic Textile Standard)
What it covers: GOTS is the most comprehensive certification in the textile supply chain. It covers both the organic fiber content of the raw material AND the environmental and social criteria for processing throughout the entire supply chain. To produce a GOTS-certified final product, every stage from raw fiber through spinning, dyeing/finishing, and final product must be certified.
Specific requirements include:
- Minimum 70% certified organic fiber content (95% for “organic” label; 70% for “made with x% organic” label)
- Prohibition of hazardous chemicals in processing (extensive positive/negative lists for dyes, auxiliaries, and finishing agents)
- Wastewater treatment standards
- Social criteria: ILO core labor conventions, living wage targets, prohibition of child labor
The social criteria component distinguishes GOTS from purely environmental standards and adds auditing complexity.
Who audits it: GOTS-approved certification bodies (over 20 globally) conduct annual audits of each certified facility. The certifying body audits each stage of the supply chain; a mill cannot receive GOTS certification based on what other mills upstream are doing — it must be audited and certified independently.
Supply chain implications: Because GOTS requires certification at every stage, sourcing GOTS-certified yarn from a non-GOTS-certified mill and weaving it at a non-GOTS-certified weaving mill does not produce GOTS-certified fabric. The certification chain must be unbroken from fiber to the point at which your claim is made.
Verification: GOTS certificates are searchable at global-standard.org/public-database. Search by company name to confirm scope and validity.
Who should require it: Brands making organic textile claims, brands selling to markets where organic textile claims are regulated (Germany in particular has strict organic marketing rules), and brands whose consumer base has high sustainability scrutiny.
BCI (Better Cotton Initiative)
What it covers: BCI is not an organic standard. It’s a sustainability standard for conventional cotton farming that promotes more sustainable agricultural practices: reduced water use, safer pesticide use, improved soil health, and decent work for farm laborers. BCI cotton is grown by farmers who have been trained under BCI’s standards but is not subject to the chemical input restrictions or certification requirements of organic standards.
BCI uses a mass balance system: the cotton that enters the supply chain is tracked by volume, but the actual physical fibers are not segregated from non-BCI cotton throughout the supply chain. A brand that sources “BCI cotton” is supporting BCI-trained farmers through a credits system rather than guaranteeing that the specific fibers in their product were grown on a BCI farm.
Who manages it: The BCI (now called the Better Cotton organization) is a non-profit multi-stakeholder organization. Members include brands, retailers, and supply chain partners who pay membership fees and commit to sourcing targets.
Who should require it: Brands with large cotton volume commitments that need a practical, scalable sustainability credential for conventional cotton. BCI is widely required by mass-market European and North American apparel brands (H&M, IKEA, Nike are members) as a baseline cotton sourcing standard.
Limitation: BCI does not provide the same level of assurance as GOTS for brands making explicit organic claims. Consumer-facing communication about BCI should be careful not to imply organic or chemical-free status.
Bluesign
What it covers: Bluesign is a resource efficiency and chemical management standard for textile mills — specifically covering fabric mills, yarn dyeing operations, and finishing units. It focuses on:
- Chemical management: approved substance list for dyes, auxiliaries, and finishing agents
- Resource efficiency: water, energy, and air benchmarks
- Consumer safety: finished product testing
Bluesign certifies manufacturing facilities, not products or raw fibers. A Bluesign-certified mill has met the standard’s requirements for chemical use and resource efficiency in its operations.
Who audits it: Bluesign Technologies (Swiss company) conducts audits and issues certification to mills that pass. Bluesign also maintains an approved chemicals list (BSSL — Bluesign Substance List) that certified mills must use.
Who should require it: Brands sourcing from dyeing and finishing operations who want assurance about chemical management and environmental practices, particularly in the outdoor and performance apparel sector (Patagonia, Arc’teryx, and major outdoor brands have been early Bluesign adopters).
REACH (EU Chemical Regulation)
What it is: REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) is EU regulation, not a voluntary certification. It restricts the use of specific substances of very high concern (SVHCs) in products sold in the EU. Textile products sold in the EU must comply with REACH — non-compliance can result in market withdrawal and regulatory penalties.
REACH is relevant to mills because the restricted substances list (updated periodically) may affect dyes, finishing agents, and softeners that mills use in their operations. A mill that supplies to EU markets should be able to provide a REACH compliance declaration for the substances of concern relevant to their products.
Who enforces it: EU member state market surveillance authorities. The European Chemicals Agency (ECHA) maintains the candidate list of SVHCs that is updated twice annually.
STeP by OEKO-TEX (Sustainable Textile & Leather Production)
What it covers: STeP is OEKO-TEX’s facility-level certification that covers production processes — chemical management, environmental performance, social responsibility, and quality management. Unlike OEKO-TEX Standard 100 (which certifies the product), STeP certifies the mill.
STeP is less widely required by brands than Standard 100 but provides a more comprehensive picture of a mill’s operational practices. A mill with both Standard 100 and STeP certification has been assessed at both the product and facility level.
How to Verify Certifications Efficiently
When qualifying a new mill, the fastest verification workflow:
- Ask the mill to provide all current certifications with certificate numbers and expiry dates
- Verify each certificate directly through the certifying body’s public database:
- OEKO-TEX Standard 100: oeko-tex.com search
- GOTS: global-standard.org public database
- Bluesign: bluesign.com/en/business/find-a-partner
- Check that the scope of the certificate matches what you’re buying (an OEKO-TEX certificate for finished fabric doesn’t cover yarn from the same mill)
- Check the expiry date — a certificate expired 3 months ago is not valid
For audited standards (GOTS, Bluesign, STeP), you can also contact the certifying body directly to confirm that the mill’s certificate is current and unrestricted.
FAQ
Can a product be both GOTS certified and OEKO-TEX Standard 100 certified?
Yes, though it’s unusual because GOTS is more demanding and its scope overlaps significantly with OEKO-TEX Standard 100 on chemical safety. A product that meets GOTS requirements would generally also meet OEKO-TEX Standard 100 requirements. Some brands request both for belt-and-suspenders documentation; in most cases, GOTS alone is sufficient for organic claims AND product safety claims.
Is BCI cotton the same as organic cotton?
No. BCI cotton is conventionally grown cotton produced under a sustainability program; it can involve synthetic pesticides and fertilizers, subject to BCI’s guidance on use reduction. Organic cotton (certified under GOTS or OCS) is grown without synthetic pesticides and fertilizers and must be certified at the farm level. The two are not interchangeable.
Do these certifications cover labor practices?
GOTS includes social criteria based on ILO core labor conventions. STeP by OEKO-TEX includes social responsibility assessment. OEKO-TEX Standard 100 and Bluesign do not include labor practices in their scope. For labor-specific supply chain assurance, separate social auditing frameworks (SEDEX/SMETA, SA8000, or Fair Trade certification) are more appropriate tools.
How often do certifications need to be renewed?
OEKO-TEX Standard 100: annual renewal. GOTS: annual audit and renewal. Bluesign: facility audits on a multi-year cycle with annual monitoring. Check specific renewal dates on each certificate rather than assuming annual cycles apply universally.