(Here are some more canker sore remedies you can find at home.) For a cold sore, applying licorice powder or licorice extract ...

Home remedies, like nasal irrigation or certain essential oils, may help relieve some symptoms of allergies. But it’s best to identify the source of your allergy and follow your doctor’s advice.

A nasal cold sore typically causes a burning sensation and blisters. Treatments like ointments and home remedies may help reduce symptoms. Cold sores are caused by the herpes simplex virus.