Wait, what? I thought hand sanitizer was supposed to be good for you since it helps keep all the germs and other nasty things away. Well, as it turns out, hand sanitizer can actually do more harm than good. Apparently, a squirt of hand sanitizer can kill a lot of the good bacteria on your hands and harm your skin. Moreover, it can contain dangerous chemicals, so before you buy another bottle of hand sanitizer, make sure you are fully aware of the risks. Watch this video to learn more about the hidden dangers of using hand sanitizer.