Sanitisers have grown to become essential in times of the pandemic. Now we can find it at the entrances of practically all public establishments. It is important to keep your hands clean and avoid touching your face, however, you should not abuse sanitising hand gels. When using them, you kill not only harmful microbes but also potentially benign ones in the microbiome of your hands.
You do have to have one with you just in case there is no access to soap and water. However, it should not become a habit to disinfect your hands every time you touch or do something. An antiseptic hand gel should be used in case of necessity.
On the other hand, it might be a good idea to disinfect your computer keyboard (if you work a lot in front of the screen), because, as you would agree, the thought process is often accompanied by the face touching.