Unilever is recalling 19 dry shampoo products because of potentially elevated levels of benzene, a known carcinogen.In a company announcement published on the Food and Drug Administration website on Friday, Unilever United States said the recalled products were all made before October 2021.They include dry shampoos from the brands Dove, Nexxus, Suave, TRESemmé and TIGI, which makes Rockaholic and Bed Head.Other aerosol products have been recalled in the past because of the presence of benzene, according to the nonprofit Environmental Working Group.Adverse reactions to the products, meanwhile, can be reported to the FDA’s MedWatch Adverse Event Reporting program online, by mail or by fax."