What does "OEKO-TEX Standard 100" certify?

"OEKO-TEX Standard 100" is a certification that specifically ensures that textiles have been tested for harmful substances and are safe for human use. This certification checks for more than just visible safety and appearance; it assesses materials for a wide range of harmful chemicals, including pesticides, heavy metals, and other toxic substances. Textiles that achieve this certification meet stringent safety criteria, making them suitable for use in clothing, home textiles, and other fabric products that come into contact with the skin.

While the other options touch on important aspects of textiles, such as aesthetics, sustainability, and durability, they do not accurately reflect the purpose of the OEKO-TEX Standard 100. This certification does not guarantee that textiles are aesthetically pleasing, nor does it certify sustainable production methods or a durability rating. The primary focus is on human health and safety concerning harmful substances, which is why the selected answer is the most accurate representation of what OEKO-TEX Standard 100 entails.