OK, so I've looked in MN history for help already but there's loads of ideas.
I have a cold sore. I never seem to get them "as soon as you feel the tingle" or whatever it is. It's there but is still tingling. Too late for Boots own brand Zovirax?
Others have said lavender or lemon or tea tree oil.
I am off to town in about 1/2hr.
I hate them. I get the same one right in the corner or my mouth when I'm run down.
Thanks.