I've got one word "LEMON". Lemon kills bacteria. It is the best germ killer ever. Natural and safe as God indented. If the blister is not open, pop it with something sterilized with rubbing alcohol and remove the fluid. Cut two small pieces of lemon. Take the first piece and clean the whole area. Take the second piece and tape it to the open sore and sleep with it on. The next day use Carmex Lip Balm.
You can even clean your entire mouth with "Glycerin" on a cotton ball so that the germs in your mouth don't feed the already on going infection. HVP-1 is a sign that your immune system is weak due to heavy toxins in the body. Research "Lemon Master Cleanse". Seek the power of lemon. LIVE HEALTHY!!