An oral care composition is provided. The composition comprises (a) a first component comprising an amine fluoride and (b) a second component comprising an acidic polymer wherein the amine fluoride and acidic polymer have respective first and second reactive groups which are arranged to react together to form a cross-linked copolymer of the amine fluoride and acidic polymer when the composition is applied to an oral cavity.本發明提供口腔保健組成物。該組成物包含(a)包含氟化胺之第一組份;及(b)包含酸性聚合物之第二組份;其中氟化胺和酸性聚合物具有各自的第一和第二反應性基團,當該組成物施予口腔時,安排該等基團一起反應以形成氟化胺與酸性聚合物之交聯共聚物。