Texas Attorney General Ken Paxton has launched an investigation into Lululemon Athletica over concerns that its activewear may contain PFAS, known as “forever chemicals.”

The probe will examine whether the company’s products include substances that consumers would not expect based on its marketing claims.

Lululemon Athletica says it does not use PFAS in its products and claims it phased out limited use in 2023, while also cooperating with the investigation.

PFAS are linked by regulators to potential health risks and are known for persisting in the environment, Reuters has reported.

The investigation will review the company’s testing, supply chain practices, and compliance with Texas safety standards.