Is teeth whitening toothpaste bad for you?

Whitening toothpaste is not "bad" for you....but for people with sensitive teeth, it is more abrasive which can make teeth more sensitive. Whitening toothpaste really does not "whiten" your teeth significantly, but it does help prevent additional staining because of its abrasiveness and take care of very minimal surface stains. Any toothpaste you can buy at the drugstore will not hurt your teeth, so use what you are comfortable with. Colgate is great, so you did make a good choice. =)