A Winning Formula for Memorable Smiles. The Crest Kid's Toothpaste featuring Disney Princesses is the perfect kid's toothpaste for your little princess. As their oral health evolves, kids need effective cavity protection as they lose baby teeth and their permanent teeth start to grow. This Crest toothpaste protects against cavities with a mild paste formula. Best of all, this toothpaste is compatible with the interactive Disney Magic Timer App by Oral-B to help your kids brush for a dentist-recommended 2 minutes.