IMPORTANT! Regular fluoride toothpastes will work against our teeth whitening products. Our new fluoride-free Whitening Primer Toothpaste is the #1 toothpaste to prime teeth before using our . Our deliciously minty fluoride-free toothpaste is the first step of our 3-Step whitening system. Developed by dentists, this toothpaste preps teeth using micro polishers to ensure your Bliss Whitening Strips work fast. It also provides relief from tooth sensitivity and protects tooth enamel.