Cancer Lawsuit Against Cosmetic Giant in the U.S.: Was the Risk Hidden for Years?

The U.S. state of Arizona sued cosmetics giant L’Oréal, alleging that it had not adequately warned consumers about the potential cancer risks of chemical hair straightening products. Arizona became the first U.S. state to file a lawsuit against the company over claims that the products were linked to cancer risk.

According to Reuters, in a lawsuit filed in state court by Arizona Attorney General Kristin Mayes, L’Oréal and its U.S. subsidiary were targeted. The complaint alleged that certain chemical hair straightening products widely used among Black women were marketed without adequate warnings about a possible link to ovarian and uterine cancer.

Arizona Demands a Halt to Sales

The state administration argues that the company violated Arizona’s consumer‑protection laws with these practices. The lawsuit seeks monetary damages and compensation, and also requests that the products be pulled from sale if the required warnings about cancer risk are not issued.

The complaint also alleged that L’Oréal and affiliated companies had exploited discriminatory beauty standards in marketing to women and children for decades. The firms were accused of putting commercial interests ahead of consumer safety.

Over 12,000 Similar Lawsuits

The lawsuit filed by Arizona is only one part of the legal proceedings L'Oreal faces. More than 12,000 similar lawsuits have been filed against the company by women who use its products and their families. These cases were consolidated in a federal court in Chicago to make the trial process more efficient.

At the heart of the lawsuits are chemical products sold under brands such as Dark and Lovely and Optimum, used to permanently straighten curly or tightly coiled hair.

The 2022 Study Paved the Way for the Lawsuits

The debate was fueled in part by a 2022 study published by the U.S. National Institutes of Health. The study reported that women who frequently use chemical hair straightening products have a higher incidence of uterine cancer compared to women who do not use these products.

After the study was released, many women across the United States filed lawsuits against the manufacturers.

L'Oreal Denies the Allegations

L’Oreal USA, however, does not accept the allegations. The company spokesperson said they trust the safety of the products and that the claims directed at them have no legal or scientific basis.

The company also stated that the study published in 2022 did not establish a direct cause‑effect relationship between the use of chemical hair straighteners and the diseases alleged by the plaintiffs.

The plaintiffs, meanwhile, are seeking compensation for the physical and emotional harm they suffered, as well as for medical expenses and the amounts they paid for the products.

In the proceedings, not only L’Oreal but also Revlon and other manufacturers are defendants. Revlon likewise rejects the allegations that its products are causally linked to cancer.

According to court records, as the legal process that consolidates thousands of files continues, hearings are expected to begin next year.