Hand sanitizer does expire, usually about three years after its manufacture date. Hand sanitizer expires because its alcohol content dissolves over time — once it drops below 60% alcohol ...

But in general, sanitizers aren't as effective as hand washing. Plus, hand sanitizers can expire and require proper technique and diligence to work properly. "People generally don't use enough ...

During the pandemic, hand sanitizers have become a health staple. But do you really know the best way to use the ubiquitous goo? The U.S. Food and Drug Administration has released a quiz to help ...