We're glad you reached out about this and hope it helps to know that this tooth discoloration is actually a sign your mouthwash is working, and that the discoloration is reversible and preventable. Crest Pro-Health products contain active ingredients that are recognized as safe and effective, and are optimized to fight plaque and gingivitis. After they kill the germs in your mouth, the germs may collect on the tooth surface and create the appearance of a brown stain. To help aid in the removal of tooth surface stain, we recommend a tartar-control/whitening toothpaste, a power toothbrush, floss, and regular dental visits. When you have a minute, please reach out to us at (800) 285-9139 and let us know if any of the tips have helped

We're here to help ease your mind, Pam! Like all mouthwash products that effectively fight plaque and gingivitis, Crest Pro-Health Rinses contain an active ingredient that is recognized as safe and effective. Tooth discoloration is actually a sign that our mouthwash is working. After it kills the germs in your mouth, the dead germs can collect on the tooth surface and create the appearance of a stain. This type of discoloration is reversible and preventable, and we'd be more than happy to help you purchase a Crest regimen that will help your daughter smile with confidence again. Whenever you can, could you please give us a call at (800) 285-9139?

We're sorry to hear that you had this experience, Larry, and we hope that you're doing well. We can assure you that our rinses have been thoroughly evaluated to be safe when used as directed, and this will be shared with our team. We do recommend that you discontinue use of this particular product, if you haven't already. So that we can learn more and gather some additional details for our Safety Team, please give us a call at (800) 285-9139 when you have a moment.

We appreciate you sharing this with us and understand how upsetting this must be, Russell. Please know certain versions of Crest Pro-Health Rinse contain cetylpyridinium chloride (CPC), an ingredient that not only helps to fight plaque and gingivitis but also kills bacteria in the mouth. For a small percentage of people who use the product, after it kills germs in your mouth, those dead germs can collect on the tooth surface and create the appearance of stains. Rest assured the discoloration is reversible and largely preventable. To help remove and prevent the discoloration, we recommend using a tartar-control or whitening toothpaste, a power toothbrush, and floss. Your feedback is truly important to us and will be shared with our team. We'd be happy to help you find a mouthwash that meets your oral care needs. Please call us at (800) 566-7252 so we can assist you further.