Arizona Attorney General Kristin Mayes filed suit in state court in September 2026, alleging L’Oréal marketed relaxers without warning of alleged ovarian and uterine cancer risks. The state seeks penalties, damages and a sales restriction absent a warning. L’Oréal has said its products undergo rigorous safety reviews and called the claims without legal or scientific merit.
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Arizona has sued L'Oreal, alleging the cosmetics company hid evidence that its hair relaxer products could cause cancer in women, as it faces thousands of similar lawsuits from users and their families.
L'Oréal reported unaudited group sales of €11,561.4 million for the third quarter of 2026 and €35,337.6 million for the first nine months, while facing a Minnesota lawsuit alleging concealed cancer risks tied to chemical hair relaxers.