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Arizona Is Suing L’Oréal Over Cancer-Causing Ingredients in Hair Relaxers

The state’s attorney general accuses the company of consumer fraud for selling hair relaxers without disclosing their health risks

Clockwise from left: L'Oréal sign seen on the exterior of the company's building in Paris; box of Dark and Lovely Beautiful Beginnings No-Mistake Smooth Relaxer and SoftSheen Carson Optimum Bodifying Relaxer.
Some of the product images included in the Arizona attorney general’s complaint are shown here.
Photo: Getty Images

On Friday, Sept. 11, Arizona’s attorney general announced that her office had filed a lawsuit against SoftSheen-Carson and its parent company, L’Oréal USA, alleging consumer fraud over its sale of chemical hair relaxer products. The complaint, filed Thursday in state court, argues that the beauty product company has sold hair relaxers like Dark & Lovely, Optimum, Mizani, and others, without disclosing the health risks their toxic ingredients pose.

The complaint cites scientific research going back to the 1990s correlating frequent use of hair relaxers with a higher risk of uterine and ovarian cancer. It alleges that, since the 1970s, L’Oréal has sold hair relaxers it depicted as safe and gentle, without health warnings, “demonstrating a callous disregard for the health of Arizona consumers, particularly women of African descent.” 

These products were mainly marketed to Black women, and often to Black children and adolescents. Early exposure to carcinogens and endocrine-disrupting chemicals—like phthalates, parabens, formaldehyde, and heavy metals—has been linked to an elevated risk of harm.

As Consumer Reports and others have reported, L’Oréal is just one of many hair relaxer manufacturers and retailers involved in a massive lawsuit brought by over 12,000 women who say that their use of hair relaxer products led to their ovarian or uterine cancers. Some of the cases were filed or are now being pursued by family members of women who have since died. 

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The multidistrict litigation is still making its way through court. But CR safety advocates say that it is notable that a state attorney general is also tackling this issue in the meantime.

“For too long, personal care products sold in the U.S. have faced minimal regulatory oversight, leaving millions of people at risk of exposure to potentially dangerous chemicals,” says Gabe Knight, senior policy analyst at Consumer Reports. “Thankfully, states have the ability to go beyond current federal rules, and do more to protect consumers. To address federal safety gaps, states should step up and take action that would help eliminate harmful chemicals from beauty and personal care products, and deliver full ingredient transparency.”

The Arizona attorney general’s complaint demands that the company stop selling these hair relaxer products without warning consumers of the “significant and potentially terminal health risks” involved in their use. It also demands monetary damages.

“L’Oréal knew or should have known about the dangers associated with these toxic hair straightening products,” Attorney General Kris Mayes said in a statement. “Yet, instead of warning their consumers, they put profits over the safety of women and children. That is unacceptable and we will hold them accountable for it.”

CR contacted L’Oréal USA for comment, and a spokesperson responded that all of its products are rigorously evaluated for safety, and that the company follows regulations in every market where the products are sold.

“We are confident in the safety of SoftSheen-Carson’s products and believe the allegations made in this lawsuit have neither legal nor scientific merit,” the spokesperson continued. “The study upon which this lawsuit is based recognized the need for further research and it made no finding of a causal connection between the use of those products and any conditions alleged by the plaintiffs.”


Lauren Kirchner

Lauren Kirchner is an investigative reporter on the special projects team at Consumer Reports. She has been with CR since 2022, covering product safety. She has previously reported on algorithmic bias, criminal justice, and housing for the Markup and ProPublica, and was a finalist for the Pulitzer Prize in Explanatory Reporting in 2017. Send her tips at lauren.kirchner@consumer.org and follow her on X: @lkirchner.