Hand sanitisers are ubiquitous, but are they helpful or harmful?

The low down for doctors on how patients can protect their microbiomes
Handwash

In recent years, hand sanitiser has become ubiquitous, spreading from healthcare settings to airports, shopping centres and other public spaces.

So much so that many people now carry a small bottle of hand sanitiser with them everywhere they go.

Of course, a popular trend does not make a practice medically sound.