We're thrilled you love Crest products, but are sorry you feel sensitivity at times. Please know that your health and safety are our primary concern, and we've tested our products to be safe when used as directed. It may help to know that any sensitivity is temporary and will fade. If you have questions or if we can help further, give us a call at (800) 492-7378.

Thanks for using the Crest 3D Whitestrips, Liam! If you're experiencing some sensitivity when using this toothpaste, we'd like to discuss some details with you. While the whitening ingredient is at a level that is in line with regulations, some consumers may be more prone to sensitivity than others. Trying not to brush too hard or more than once a day with a soft toothbrush during treatment can decrease these effects. If irritation persists or becomes uncomfortable, discontinue use and consult your dentist. To talk more about your routine and see if there's anything we can do to help, please call us at 1-800-492-7378, M-F, 9 am to 6 pm EST, when you get a chance.

We're very sorry you experienced sensitivity with our Crest Whitestrips. Please know that your oral health and safety are very important to us, and we thoroughly test our products to be safe when used as directed. As mentioned on the box, any product containing hydrogen peroxide can cause sensitivity. Sometimes it helps to use the strips every other day, rather than every day. If you have questions, or if we can help you further please give us a call at (800) 395-8423.

Rebecca, we're very sorry you had this experience. Please know that your oral health and safety are the most important things to us at Crest, and we thoroughly test our whitestrips to be safe when used as directed. We'd like to learn more about your experience for our Safety Team. When you get a moment, could you phone us at (800) 395-8423. We look forward to helping you further.