I know all the advise I have heard is to regularly wash your hands, but I certainly haven't heard anyone reputable advising to not use hand gel.
Sally Bloomfield, a professor at the London School of Hygiene and Tropical Medicine, says that viruses are much more resistant to disinfectants than bacteria. Luckily, she says, coronavirus is an envelope virus, meaning it has a coating around it which the alcohol can attack, thereby eliminating the threat. (Norovirus and rhinovirus, by contrast, do not).
...
Bloomfield’s advice is to wash your hands with soap and water – or, if that is not possible, use hand gel – when you return to your “safe place”, by which she means your home, your desk or work station, or your seat on the train or plane, for example. Avoid touching anything you don’t need to touch, and be mindful of what you do touch – such as door handles and bus poles – and if you can’t wash your hands or use gel after coming into contact with things, do not touch your face.
If you are on a long journey using air travel for example there are many surfaces you might touch along the way without the opportunity to go and wash your hands with soap and water. Handrails on the bus taking you from the gate to the plane, the stair handrail getting onto the plane, opening overhead lockers, seat back trays etc. The virus may not live long on surfaces, but if the person in front of you has it, coughs into their hand, touches a hand rail and then you grab it then regularly sanitising your hands and not touching your face will give you some protection.
Just in my office for example, when I go to the toilet I can give my hands a good wash, but I have three sets of doors to pull open before I get back to my desk. Fortunately we have hand gel pumps scattered about with gay abandon, about every 3m around the office, I can literally see about 50 of them without getting out of my chair.