A good and fast way of getting rid of a cold sore is to apply some tea tree oil to the cold sore the cold sore will dry up and go away much sooner.
Apply Tea Tree oil to the cold sore throughout the day and again before you go to bed and the cold sore should disappear within a few days.
Peppermint oil can also get rid of a cold sore in a few days as long as you continue to apply the peppermint or Tea Tree oil to the cold sore throughout the day.
Another way to get rid of a cold sore is to apply ice to the cold sore which will help with the swelling and pain of the cold sore.