I've been using the Sensodyne brand of toothpaste since it came out. I have very sensitive teeth due to a receding gum line in some areas so a toothpaste for sensitive teeth was a must for me. When I saw this specific product I thought I'd try it since this toothpaste also lists cavity protection and whitening as additional benefits to the sensitivity protection. I'm always looking for ways to whiten my teeth, but most products on the market are too harsh for my sensitive mouth. I used this toothpaste for a month straight. The toothpaste did it's job when it came to keeping my sensitivity down, but my teeth didn't look any whiter. I figured I would keep using it for another month to see if I get better results. After the second month my teeth were the same shade as when I started using it 2 months prior. I like the taste of the toothpaste and it really works on the sensitivity issue, but I don't think the whitening ingredients are strong enough to make a noticeable difference.