To help prevent swimmer's ear:
Keep your ear canal dry. Limit your time exposed to water.
To keep water out of your ears while showering, use a ball of cotton covered with a layer of petroleum jelly.
If you get water in your ears, dry them thoroughly. First, turn your head to the side and pull the earlobe in different directions to help the water run out. Gently dry the opening to the ear canal. Then use a hair dryer briefly on its lowest ...