I've been doing a bit of research and it seems like that keeping you skin a bit acidic and eating a healthy alkalizing diet is the way to go. use acne products like lactic acid on your face and skin to keep it in the lower PH range acidic.
'As with most health-related barometers, balance is everything. Proper pH varies throughout your body for many reasons. For example, your bowels, skin and vagina should be slightly acidic–this helps keep unfriendly bacteria away.' The article says to not use things like Dettol because it can strip away the good bacteria on your skin as well as the bad.
https://kriscarr.com/blog/ph-balance-alkaline-foods/
All viruses enter your body through your cells that have been invaginated, which is the viral entry point, the cells are opened, curved. Deprotonation (or
dehydronation) stops your cells from being invaginated by removing hydrogen. And using an acid based product like lactic acid or other acne products can probably help.
https://en.wikipedia.org/wiki/Deprotonation https://en.wikipedia.org/wiki/Viral_entry
Also I'm definitely not a doctor so it would be good to double check.