Park City Pilates: Are Your "Healthy" Leggings Toxic?

Photograph of Franklin Everett ShawBy Franklin Everett Shaw
July 26, 2025

Are your leggings silently harming you? The athleisure trend has exploded, especially in health-conscious communities like Park City, Utah. But beneath the stylish exterior of your favorite leggings might lurk hidden dangers.

Many popular brands, particularly those prioritizing low cost over consumer safety, use materials and manufacturing processes that can expose you to harmful chemicals. This article will delve into the potential health risks associated with specific leggings brands, focusing on how to identify potentially toxic materials and safer alternatives readily available in the U.S. market.

The primary concern revolves around the fabrics used in leggings, often a blend of synthetic materials like polyester, nylon, and spandex. While these materials offer stretch and durability, their production can involve toxic chemicals. These chemicals can remain in the finished product and leach onto your skin, leading to various health issues.

One of the biggest culprits is azo dyes. These dyes are used to create vibrant colors in fabrics, but some azo dyes can break down and release carcinogenic aromatic amines. These amines are absorbed through the skin and have been linked to bladder cancer.

Phthalates are another group of chemicals to watch out for. They are often used as plasticizers to make fabrics softer and more flexible. Phthalates are endocrine disruptors, meaning they can interfere with your body’s hormones. This can lead to reproductive problems, developmental issues, and even certain types of cancer.

Formaldehyde is sometimes used in the finishing process to prevent wrinkles and maintain the shape of leggings. Formaldehyde is a known carcinogen and can cause skin irritation, allergic reactions, and respiratory problems.

So, how do you identify potentially toxic leggings? It’s not always easy, as manufacturers aren’t always transparent about the chemicals they use. However, there are some red flags to look out for.

First, consider the price. Extremely cheap leggings are more likely to be made with lower-quality materials and potentially harmful chemicals. Manufacturers cutting corners often prioritize profit over safety.

Second, pay attention to the smell. Leggings with a strong chemical odor, especially when new, may contain volatile organic compounds (VOCs) that can off-gas and cause health problems. Airing out new leggings before wearing them can help reduce VOC exposure, but it’s best to avoid leggings with a strong odor altogether.

Third, check the label for certifications. Look for certifications like Oeko-Tex Standard 100, which indicates that the fabric has been tested for harmful substances. GOTS (Global Organic Textile Standard) certification ensures that the fabric is made from organic fibers and processed without harmful chemicals.

Fourth, research the brand. Look for brands that are transparent about their manufacturing processes and committed to using sustainable and non-toxic materials. Many smaller, independent brands prioritize ethical and environmentally friendly practices.

Now, let’s talk about specific brands. While it’s difficult to definitively say which brands are “toxic” without extensive testing, some brands have been criticized for their use of potentially harmful chemicals. Brands that heavily rely on synthetic materials and prioritize low prices are more likely to be problematic.

For example, some fast-fashion brands known for their affordable leggings have faced scrutiny for their environmental and social practices. These brands often lack transparency about their supply chains and may not prioritize consumer safety.

On the other hand, several brands are committed to producing safer, non-toxic leggings. These brands often use organic cotton, recycled materials, and low-impact dyes. They also prioritize ethical manufacturing practices and transparency.

Patagonia, for instance, is known for its commitment to sustainability and ethical sourcing. Their leggings are made from recycled materials and are designed to last. PrAna is another brand that uses sustainable materials and ethical manufacturing practices. Their leggings are made from organic cotton and recycled polyester.

Beyond Yoga is a popular brand that focuses on comfort and quality. Their leggings are made from a soft, breathable fabric that is free of harmful chemicals. Girlfriend Collective is a brand that uses recycled materials to create stylish and sustainable activewear. Their leggings are made from recycled water bottles and are available in a variety of colors and sizes.

These brands may be more expensive than fast-fashion alternatives, but the investment is worth it for your health and the environment. Remember, you’re wearing these leggings close to your skin for extended periods, especially in active environments like Park City’s hiking trails and yoga studios.

What about washing your leggings? Washing new leggings before wearing them can help remove some of the residual chemicals. Use a gentle, non-toxic detergent and avoid using fabric softeners, which can contain harmful chemicals.

Consider using a laundry stripping method periodically to remove built-up residue from your leggings. This involves soaking your leggings in a mixture of hot water, borax, washing soda, and laundry detergent. However, be careful not to overdo it, as this can damage the fabric.

One common mistake people make is assuming that all leggings are created equal. They see a pair of leggings on sale and assume they’re just as good as a more expensive pair. This is simply not true. The materials, manufacturing processes, and ethical standards can vary significantly between brands.

Another mistake is ignoring the care instructions. Washing your leggings improperly can damage the fabric and release harmful chemicals. Always follow the care instructions on the label.

Finally, don’t be afraid to ask questions. If you’re unsure about the materials or manufacturing processes used by a particular brand, contact the company and ask for more information. Transparency is a sign of a responsible and ethical brand.

In conclusion, choosing safe and non-toxic leggings is crucial for protecting your health. By being aware of the potential risks associated with certain materials and brands, you can make informed decisions and choose leggings that are both stylish and safe. Prioritize brands that are transparent about their manufacturing processes, use sustainable materials, and hold relevant certifications. Your health is worth the investment. So, next time you’re shopping for leggings in Park City or anywhere else, remember to look beyond the price tag and consider the potential health risks.

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