Described herein are oral care compositions comprising (i) a peroxide whitening agent comprising a whitening complex of crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, (ii) sodium acid pyrophosphate (Na2H2P2O7) in an amount of from 0.05 wt % to 5 wt % based on the weight of the composition, and (iii) less than 3 wt % water based on the weight of the composition.本發明係關於口腔保健組成物,其包含(i)過氧化物美白劑,其包括交聯聚乙烯基吡咯烷酮與過氧化氫複合之美白複合物,(ii)酸式焦磷酸鈉(Na2H2P2O7),以根據該組成物之重量由0.05重量%至5重量%之數量,及(iii)低於3重量%之水,以該組成物之重量計。