Described herein are oral care compositions comprising a crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide; including some embodiments which further comprise an ethylene oxide, propylene oxide block co-polymer.本文所述為口腔護理組成物,其含有與過氧化氫複合的一種交聯聚乙烯吡咯啶酮;包括一些具體實例,其中進一步含有一種環氧乙烷、環氧丙烷的嵌段共聚物。