MARK3 5% Sodium Fluoride Varnish with TCP - Bubble Gum, 50 Unidose packages, each of .04ml Varnish and one Applicator Brush. Contains Tri-Calcium Phosphate to help remineralize teeth. Dries to natural enamel color. Contains Xylitol for caries prevention. Treats dentin hypersensitivity. Compare to Kolorz and Enamel Pro Varnish 50 - 0.4 ml unit doses