It is the professional fluoride treatment that provides quick protection because it releases fluoride fast. Contains 22,600 ppm fluoride. Easy all-in-one tray and brush delivery. Virtually clear. Suggested Application: Treating hypersensitive teeth. Treating exposed dentin and root surface sensitivity. Each box contains unit-dose packets of the, 1 applicator brush and dispensing tray. Non-Latex Shelf Life: 730 days