Next, stop by a chemist and buy some witch hazel on your way to work. Apply this to the area an hour after the Zovirax, and once every hour until your next application of Zovirax 4 hours later. OK, your now in work - go and make yourself some tea but keep the teabag! Go back to your desk and place the warm teabag against the effected area for around 20-30 mins.Â