An oral care composition which is a liquid at or below room temperature and which forms a two-phase cloudy system at body temperature and wherein the composition comprises a water-soluble non-ionic polymer, such as HPC, having a cloud point in the composition at a temperature no higher than about 38℃, for combating (i.e. helping to prevent, inhibit and/or treat) dentinal hypersensitivity.本發明係關於一種口腔護理組合物,其處於或低於室溫下為液體及在體溫下形成雙相渾濁體系,及其中該組合物包括水溶性非離子性聚合物(如HPC),其在組合物中具有不高於約38℃之溫度之濁點,以對抗(即有助於預防、抑制及/或治療)牙質過敏症。