Three active ingredients—benzalkonium chloride, ethyl alcohol and isopropyl alcohol—are being deferred from further rulemaking to allow for ongoing study, said the US Food and Drug Administration when it issued a final rule on hand sanitizers available over-the-counter (OTC). The rule establishes that certain active ingredients are not allowed to be used in OTC hand sanitizers, formally known as topical consumer antiseptic rub products, which are intended for use without water and marketed u...