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The research

Labels & Trust

How accurate clothing labels actually are, what independent testing finds, and how to read a fiber line with the odds in front of you.

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The short answer

A clothing label is a claim by the seller. It is required by law in the US and the EU, and it is checked far less often than most people assume. When EU inspectors tested 132 garments in 2026, 37% did not match their labels. Blends failed most often, and simple single-fiber claims held up best.

Find the guide for the question you have

  • Reading a label. Fibers are listed by weight, largest first, and that order tells you a lot about how a garment will feel and wear.
  • Blends. More numbers on a label means more room for error.
  • Certifications. They answer a different question from the fiber line, and a logo without a number cannot be verified.
  • Testing. Labs identify fibers under a microscope, then measure them by dissolving one fiber and weighing what is left.
  • Wear. Most clothes do not rip. They pill, where small balls of fiber form on the surface, and fade until you stop wearing them.
  • What is coming. Digital product passports will put more on record, still declared by the brand.

Start with these three

  1. Is It Really 100% Cotton? How to Check What Your Clothes Are Made Of
  2. How Often Are Clothing Labels Wrong? Here’s What the Research Shows
  3. How to Read a Clothing Label: What the Tag Really Tells You

For the full picture, see how accurate is the label in your clothes? and five ways to find out what a garment is made of.

Every Labels & Trust article

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How Often Are Clothing Labels Wrong? Here’s What the Research Shows

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Why Blended Fabrics Are Mislabeled So Often

Blended fabrics miss their labels more often than single-fiber garments. Here’s why that happens and what it means when you shop.

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How to Read a Clothing Label: What the Tag Really Tells You

The fabric content label tells you more than you might think. Here’s how to read clothing labels quickly, and what those percentages really mean.

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Why Do Clothes Wear Out So Quickly?

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Digital Product Passports for Clothing: What to Know

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Microplastics From Laundry: How Clothes Shed Plastic Fibers

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Is It Really 100% Cotton? How to Check What Your Clothes Are Made Of

The label says 100% cotton, but is it? Here’s how to check fabric content at home, and when only a lab can give you the real answer.

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