Review (1/5): Would not use again
I've used Colgate for years without an issue until I tried this product. There is an odd warming sensation as you brush. Also afterwards a weird film starts to appear within the hour after brushing with this toothpaste. If you're prone to canker sores, stay away from this toothpaste! Within a few days a huge canker sore developed along with tooth sensitivity. It became painful to eat/drink while I was using this toothpaste. After I threw it away, the pain subsided and the canker sore is gone. As far as my teeth being whiter, it worked a little but isn't worth all the other issues that occurred while using this toothpaste. I wouldn't recommend this product to anyone.