Have you ever paid more for a product because a brand told you it was good for you and the planet? Many activewear shoppers do exactly this, trusting that the "healthy" image on the label matches what is actually in the fabric. The Texas Attorney General's office has launched a formal investigation into the activewear brand Lululemon. The question: does its activewear contain PFAS, a group of toxic "forever chemicals"? This sits uncomfortably with a brand built on wellness. Lululemon has denied the claims. It says it phased out PFAS in 2023. The case highlights a wider problem: a gap between what fashion brands promise and what is actually in their products. PFAS (per- and polyfluoroalkyl substances) are synthetic chemicals used to make fabrics resistant to water, stains and sweat. They earned the name "forever chemicals" because they do not break down easily in the environment or our bodies. Instead, they accumulate over time. The issue first came to wide attention in 2011, when Greenpeace's "Dirty Laundry" investigation named several global giants for links to dumping perfluorinated chemicals (PFCs), now broadly classified as PFAS, into Chinese waterways. While most major brands promised to phase out PFAS by 2020, follow-up testing shows they still appear in leggings and sports bras across the sector. Exposure has been linked to serious health risks, including kidney and testicular cancers, hormonal disruption, and immune system damage.