Over the last few months we’ve been told how important it is to wash our hands regularly – for at least 20 seconds – to protect against coronavirus. But with so many different soaps to choose from, how do we work out what’s best?
To mark Global Handwashing Day, Dr Michelle Wong – a beauty blogger with a PhD in chemistry – explains how to find the best soap for your skin when cleaning our hands more regularly, and a trick to get children to wash their hands.
BBC CrowdScience for more about how soap works.
Video by Jennifer Green.