Texas Attorney General Ken Paxton has launched an investigation into Canadian athletic apparel company Lululemon over the potential presence of "forever chemicals" in its activewear, according to a statement released by his office on Monday.

The probe will examine whether Lululemon's athletic apparel contains PFAS, which the brand's health-conscious customers would not ​expect based on its marketing, Paxton said. PFAS, or per- ​and polyfluoroalkyl substances, are a group of widely used materials ⁠called "forever chemicals" because they do not break down easily in nature.

The attorney general's office will also review the company's Restricted Substances List, testing protocols and supply chain practices to assess whether its products comply with its stated safety standards.

Lululemon said in a statement that it does not use PFAS in its products and has phased out the substances in fiscal year 2023, noting that they had previously been used in a small portion of water-repellent products.

The company said its products meet or exceed global regulatory, safety and quality standards, and that it requires vendors to conduct regular third-party testing for restricted substances, including PFAS, to ensure ongoing compliance.

PFAS are a group of over 14,000 synthetic chemicals that have been used in industry and consumer products, according to the US Centers for Disease Control and Prevention.

Studies suggest that exposure to some PFAS might result in harmful health outcomes, including cancer, increased cholesterol levels and immune system effects.

Lululemon also said it is aware of the inquiry and is cooperating by providing the requested documentation.

(With input from agencies)