With enamel strengthening. The easier, faster way to whiten (when used as directed). Add to any fluoride toothpaste every time you brush! No messiness, no inconvenient extra strips. Contains peroxide, the same ingredient. Dentist use for whitening. Whitening Booster is not an anticavity fluoride-containing toothpaste. Should not be used alone. Must be used in combination with toothpaste. Strengthens enamel with everyday use. Peroxide formula with liquid calcium. Feel it working with unique foaming action. Made in USA.