Desensitizing oral care composition useful for the treatment of dentin hyperesthesia, including potassium oxalate, and methods of use thereof. A delivery system comprising such oral care composition for treatment of strips of material and dentin hyperesthesia, and methods of use thereof.シュウ酸カリウムを含む、象牙質の知覚過敏の治療に有用な減感性口腔ケア組成物、及びその使用方法。材料のストリップ及び象牙質の知覚過敏の治療のためのかかる口腔ケア組成物を含む送達システム、並びにその使用方法。