We’ve all seen it in the news: wash your hands for twenty seconds to help kill any viruses you might have picked up. But why twenty seconds? Is it an arbitrary rule or is there actually something magic about that length of time? Is there a special kind of soap you need or will any old soap do?
The answer is rooted in a bit of basic chemistry.
[vc_video link=”https://www.youtube.com/watch?v=-LKVUarhtvE”]