Use an over-the-counter antiviral cream as soon as tingling starts
Apply a cold compress to reduce pain and swelling
Keep the area clean and dry
Avoid picking, squeezing, or scratching the blister
Use petroleum jelly or a lip balm to prevent cracking
Take over-the-counter pain relievers if needed
Avoid acidic, salty, or spicy foods if the blister is on your lips
Avoid kissing and sharing drinks, utensils, towels, or lip products
Wash your hands after touching the area
Get enough rest and manage stress
Stay hydrated
See a doctor for prescription antiviral medicine if outbreaks are frequent, severe, or very painful