To make alcohol gel use 50/50 isopropyl 99 percent alcohol and aloe Vera gel. It’s cheap and effective.
N100 masks will work on virus except eyes which are mucous membrane if your infected hand touches eyes it’s easy transfer. Same goes for nose and mouth but those are under the mask. Make sure mask fits well may of the paper ones don’t fit everyone well. Make sure nose is sealed.
We use neoprene masks with replaceable n100 cartridges they seal super well. They look like the winter outdoor masks and come in different colors so you can tell which is yours.
And dirty hands or more than 4 times using gel without proper water and soap handwash is useless as the bacteria and virus are protected by the dirt from the alcohol.