how much apple cider vinegar is needed to help clear sinus
Overview 3. Breathe in apple cider vinegar vapor. Breathing in a combination of steam and apple cider vinegar vapor may help offer relief from sinus infections and the headaches they can cause. Mix about 1/4 cup of apple cider vinegar with 2 cups of water. Heat the mixture until it boils, and then inhale the steam for about 3 minutes.