In late October 2022, the United States Food & Drug Administration recalled several aerosol dry shampoos due to “potentially high levels” of the human carcinogen benzene, a cancer-causing chemical. Brands including Dove, Nexxus, Suave, TRESemmé, Bed Head, and Rockaholic were all recalled; in a test of 34 popular brands, up to 70% contained harmful amounts of carcinogen.