Waterpik UltraThin Fluoride Varnish is a 5% Sodium Fluoride Varnish that utilizes thin layer technology which provides an easier mix, easier application and has superior fluoride release. Features: -Easier to mix -Looks and feels better -Superior fluoride release Benefits: -No cumbersome messy foil pouches -Thinner consistency goes on smoothe and easy -Especially early in the contact time when it counts the most