You can make the cold sore go away faster by applying Apple Cider Vinegar to the cold sore 2 to 3 times per day until it goes away or you can also apply some toothpaste to the cold sore.
The toothpaste will dry out the skin and cause the cold sore to go away.
The Apple Cider Vinegar will kill off the viruses that are causing the cold sore since it's Antiseptic and Antibacterial.
Applying Salt to the cold sore is also another great way of getting a cold sore to go away.