I have been using this toothpaste for the past year. My teeth have never been sensitive and they still are not sensitive. However, my boyfriend does have sensitive teeth and rotates with regular sensitive toothpaste and with optic white.
I have sensitive teeth because of grinding and clenching my jaw. For a while I used sensodyine with no luck. Using Optic White Toothpaste has not hurt my teeth but it has definitely made them whiter. I have not used the mouthwash or the tooth brush.