“It turns out Crest, especially the Pro-Health line, but I checked all of our toothpaste tubes, and all of them have switched from using sodium fluoride to stannous fluoride,” she says.

Crest Pro-Health Sensitive Shield contains the active ingredient stannous fluoride, which reduces sensitivity by blocking the triggers from stimulating nerves inside the tooth, according to Crest.

2. Crest Pro-Health Crest Pro-Health is marketed as a multi-benefit toothpaste, but it comes with several drawbacks. It contains stannous fluoride, which can lead to brown stains on some users ...