Iwhite Sensitive Whitening Toothpaste 75Mlwhitening toothpaste for sensitive teethdesigned to whiten teeth that show sensitivity, ie sudden pain, after consuming an ice cold or hot drink. hich contains potassium nitrate, it acquires the property of desensitization. The active ingredients are released at each brushing of the teeth. the toothpaste remineralizes the enamel and prevents tooth cavities (holes).