Our products do not cause sensitivity to healthy teeth and gums. We do not recommend using our products if you already have sensitive teeth as there might be an underlying issue causing the sensitivity. In healthy teeth, enamel protects the underlying layer of dentin, which is softer than enamel. The tooth roots are protected by gums. If the enamel is worn down or if the gum line has receded, then the dentin becomes exposed which can trigger pain in sensitive teeth.