My favorite natural toothpaste is Tom’s of Maine. More than Sensodyne, Tom’s helped the sensitivity in my teeth. One day, I decided to try something new and get Hello. It was a different flavor, cinnamon, and it was maybe 40 cents cheaper. It was disappointing – none of the sensitive in my teeth went away, in fact, it felt like it almost got slightly worse. After I suffered a cold/allergies recently, I threw that tube away and bought Kiss My Face‘s sensitivity toothpaste. It’s orange mint and is a gel. I like it so far. I haven’t used it for long, but I feel some sensitivity abating. Both of these products cost about $4.50 at Walmart.