Achoo! From itchy, watery eyes to swollen tongues and obstructed airways, allergies from pollen, foods, and medications can really mess us up. Did you know that you can even be allergic to toothpaste? Though rare, the literature on toothpaste allergies suggests about 0.1-0.3% of the population displays a contact allergy to toothpaste. If you're one of the few, don't expect to sneeze every time you brush your teeth. Find out more about toothpaste allergy symptoms, common allergens found in toothpaste, and what to do if you suspect you might have a toothpaste allergy.