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Zinc Free!12 Hour Holding PowerGood Value - 1x Per Day For Upper Lowers and Partial Dentures Secure is the only known denture adhesive that is waterproof. This means it won't wash away when eating or drinking like suction based brands. It forms an extremely strong bond with the gums to provide all-day hold... keeps dentures from loosening for up to 12 hours... and prevents the discomfort of food particles getting trapped under dentures. Due to higher consistency you use less Secure so it's economical. 100% Zinc-free and taste-free it's a new experience in dentures.