Most furniture fabric goes through a lot of chemical processes before it ends up on your sofa. Dyes, finishes, softeners, stain treatments — each one can leave traces behind.

OEKO-TEX Standard 100 is a certification that tests for those traces. If a fabric carries this label, it has been tested and confirmed free from harmful substances at levels that could affect you.

Here's what that actually means, what it covers, and how we use it when we score a piece.

OEKO-TEX Standard 100 is a testing and certification program run by OEKO-TEX, an independent organization based in Europe. It tests textile products — fabrics, yarns, threads, and finished goods — for harmful chemicals and substances.

If a product passes, it earns the STANDARD 100 by OEKO-TEX label. That label means every component of the product has been tested. Not just the outer fabric, but the lining, the zipper, the thread, the dye — everything. The entire finished article has to meet the standard, not just part of it.

The testing is done by independent labs, not by the brand itself. Certification has to be renewed every year. Brands can't keep the label without proving their products still pass.

OEKO-TEX is not a government program. It's a private certification — but it's widely recognized, used in over 100 countries, and considered one of the most rigorous chemical safety standards in the textile industry.

OEKO-TEX Standard 100 divides products into four classes based on who will use them and how much skin contact they'll have. Products with more skin contact — especially for babies and children — have to meet stricter limits.

Class	What It Covers
Class I — Baby & Toddler	Textiles for children under 3 years old. This is the strictest class. Limits for every substance are tighter because babies put fabric in their mouths and have more permeable skin. If upholstery fabric carries a Class I certification, it meets the highest standard in the program.
Class II — Skin Contact	Products worn next to the skin — underwear, T-shirts, bed linens, and similar items. Limits are strict but slightly less so than Class I. Upholstered furniture fabric that has direct skin contact often falls here.
Class III — No Direct Skin Contact	Products that don't touch skin directly — jacket linings, decorative fabric, outer layers. Many upholstery and drapery fabrics are certified at this level. Limits are still meaningful but reflect the lower exposure.
Class IV — Decoration & Furnishing	Items used in furnishing and decoration that have no skin contact — curtain liners, wall coverings, floor mats. The least strict class, but still tested and certified as free from harmful substances under normal use.

OEKO-TEX Standard 100 tests for over 100 individual substances. Here are the main categories and why each one matters for furniture fabric.

Substance	Why It Matters
Formaldehyde	Used in wrinkle-resistant and easy-care fabric finishes. Can irritate skin, eyes, and airways — especially for people with sensitivities. A common concern in performance upholstery fabrics.
Heavy metals	Lead, cadmium, chromium, and others can be present in dyes or fabric treatments. Some are toxic even in small amounts, particularly for children. OEKO-TEX sets strict limits for each metal.
Pesticide residues	Natural fibers like cotton and linen are often treated with pesticides during growing. Residues can remain in the finished fabric. OEKO-TEX tests for over 40 different pesticide compounds.
Azo dyes	A large family of synthetic dyes. Most are safe, but certain azo dyes can break down into carcinogenic compounds. OEKO-TEX prohibits the specific dyes in this category that pose a risk.
pH level	Fabric that is too acidic or too alkaline can irritate skin. OEKO-TEX requires pH to fall within a safe range for each product class.
Color fastness	Dyes that bleed or rub off can transfer onto skin. OEKO-TEX tests whether color holds up to rubbing, washing, perspiration, and light exposure.

OEKO-TEX Standard 100 is not a scored category on its own at MCD. It feeds into the Craft score — our measure of how responsibly a piece is built. Here's how we treat it.

Certified fabric earns credit in Craft. When the upholstery fabric on a piece carries OEKO-TEX Standard 100 certification, it tells us the brand chose a vetted material and paid for independent testing. That reflects intentional sourcing — and we give credit for it.

Class matters — higher is better. Class I or II certification on furniture fabric is notably strong. It means the fabric was tested to standards designed for skin contact or even infants. We note the class when we can confirm it.

We verify — we don't take the brand's word for it. OEKO-TEX certifications are searchable at oeko-tex.com. We check that the specific product or fabric is actually listed before giving credit. A brand claiming OEKO-TEX without a verifiable certificate doesn't earn the same consideration.

No certification doesn't mean the fabric is harmful. Most upholstery fabric sold in the US doesn't carry OEKO-TEX certification — that's the norm, not the exception. We don't penalize a piece for uncertified fabric. We simply give additional credit when it is certified.

It's one signal among several. OEKO-TEX is a chemical safety test, not a durability or quality test. A fabric can be OEKO-TEX certified and still be thin, prone to pilling, or a poor choice for a sofa. We weigh it alongside performance metrics, not instead of them.

OEKO-TEX Standard 100 is often confused with related certifications. Here's how it sits alongside the others you may see on furniture and fabric products.

Certification	What It Actually Tests
OEKO-TEX Standard 100	Tests the finished textile product for harmful substances. Focused on chemical safety — what's in the fabric that could affect a person. Does not address how or where the fabric was made.
OEKO-TEX MADE IN GREEN	A separate OEKO-TEX label that combines chemical safety testing (Standard 100) with facility audits for environmental practices and social standards. Covers both the product and the factory. Broader but less common.
GOTS	Global Organic Textile Standard. Covers both organic fiber content and environmental and social standards throughout the supply chain. Stricter on fiber sourcing than OEKO-TEX, but the two standards overlap significantly on chemical limits.
bluesign	Focuses on the manufacturing process — water use, chemical management, energy efficiency, and worker safety at the mill. Does not test the finished consumer product the way OEKO-TEX does. More common in outdoor and performance fabric.
GREENGUARD Gold	Tests for chemical emissions into indoor air — what a product gives off once it's in your home. OEKO-TEX tests what's in the fabric; GREENGUARD tests what the piece emits. Different questions, both important.

Words that come up when brands and manufacturers talk about fabric safety and chemical testing — defined plainly.

OEKO-TEX

An independent organization that sets standards and provides certification for textiles. Based in Europe with testing facilities worldwide. Their certification database is publicly searchable at oeko-tex.com — you can look up any brand or product to confirm a claim is real.

Harmful Substances

In the context of OEKO-TEX, this means chemicals found in textiles that could cause harm through skin contact, ingestion, or inhalation. Examples include certain dyes, heavy metals, formaldehyde, and pesticide residues. "Harmful" is defined by the standard's limits, which are based on toxicological research.

Formaldehyde

A chemical used in fabric finishes to make textiles wrinkle-resistant or stain-repellent. Present in many performance upholstery fabrics. At high levels it can irritate skin and airways. OEKO-TEX sets strict limits on how much can remain in a finished fabric.

Azo Dyes

A large family of synthetic dyes used across the textile industry. Most are safe. However, a subset can break down in contact with skin into compounds called aromatic amines, some of which are carcinogenic. OEKO-TEX prohibits the specific azo dyes that carry this risk.

Color Fastness

How well a dye stays in a fabric under different conditions — rubbing, washing, sunlight, and perspiration. A fabric with poor color fastness can transfer dye to skin or other surfaces. OEKO-TEX requires a minimum level of color fastness appropriate to each product class.

pH Level

A measure of how acidic or alkaline a fabric is. Human skin is slightly acidic. Fabric that falls outside a safe range can cause irritation, especially for sensitive skin. OEKO-TEX requires fabric pH to stay within tested safe limits for each class.

GOTS

Global Organic Textile Standard. A certification that requires at least 70% certified organic fiber content, plus environmental and social standards throughout production. Overlaps with OEKO-TEX on chemical safety but goes further on fiber sourcing and supply chain transparency.

Performance Fabric

Upholstery fabric engineered for durability, stain resistance, or easy cleaning — often treated with chemical finishes to achieve those properties. These treatments are exactly what OEKO-TEX testing is most relevant to: confirming the chemicals used in those finishes are within safe limits.

OEKO-TEX Standard 100 Definition