Rinse your mouth with warm salt water several times a day
Avoid spicy, acidic, salty, and crunchy foods
Use a soft-bristled toothbrush
Keep the area clean and avoid irritating it
Apply an over-the-counter oral gel or protective paste
Use a cold compress or suck on ice chips to reduce discomfort
Stay hydrated
Avoid picking, popping, or biting the blister
Use a mild alcohol-free mouthwash if needed
Take over-the-counter pain relief if appropriate for you
Avoid tobacco and alcohol
See a dentist or doctor if it lasts more than 2 weeks, gets worse, or keeps coming back