The present invention relates to abradable films useful, e.g., in dentifrice formulations, wherein the film is stable in formulation, but abrades to release pigment or oral care active components upon brushing. The invention provides, e.g., an orally acceptable, water insoluble film which does not dissolve under formulation conditions but disintegrates upon brushing, comprising a polymer matrix, plasticizer (e.g., propylene glycol), releasable material (e.g., color or pigment) incorporated therein and (optionally) nonionic surfactant (e.g. polysorbate), wherein the polymer matrix comprises at least 50%, e.g., at least 75%, of poly(vinyl alcohol), and 50% or less, e.g. 25% or less, of a water-soluble cellulose ether, for example hydroxypropyl methyl cellulose together with dentifrice comprising such films, and methods of making and using the same.本發明有關一種有用於例如潔牙劑調配物之耐磨薄膜,其中薄膜穩定於調配物中,但於刷牙時磨損以釋放顏料或口腔護理活性組分。本發明提供如口腔可接受、水不溶性薄膜,其在調配物條件下無法溶解,但於刷牙時碎裂,其包括聚合物基質、塑化劑(如丙二醇)、合併其中之可釋放材料(如顏色或顏料)、及(視情況)非離子界面活性劑(如聚山梨醇酯),其中聚合物基質包括至少50%(如至少75%)之聚(乙烯醇)及50%或更少(如25%或更少)之水溶性纖維素醚(例如羥丙基甲基纖維素);提供包括如此薄膜之潔牙劑,及製作與使用該薄膜之方法。
