I have teeth sensitive to whitening. Can using Whitestrips make it worse?

It is perfectly normal to experience some tooth sensitivity when using whitestrips, particularly when using the products that require a longer wear time. Rest assured, however, that all Whitestrips in the 3D White range are enamel safe. Sensitivity typically subsides after a couple of days, but if sensitivity does persist, we recommend trying Gentle Routine which contains a lower concentration of hydrogen peroxide.