House Brand Dentistry Fluoride Varnish - Caramel Flavor 50/Bx. Contains 5% sodium fluoride. Indicated for tooth hypersensitivity. Provides protection against caries. Quick-drying after application. Fluoride Varnish with 5% sodium fluoride treats dentin hypersensitivity in patients of all ages. It contains Tri-Calcium Phosphate for maximum calcium and phosphate ion release and Xylitol to inhibit caries formation and build-up.Fluoride Varnish dries to a natural enamel color after a fast and easy application.