The present invention provides oral care compositions, and in particular toothpaste compositions comprising a calcium salt abrasive and a novel alginate-based binder and rheology modifier, together with methods of use and manufacture thereof.本發明提供口腔保健組合物,及特別是是牙膏組合物,其包含一種鈣鹽磨擦劑及一種新穎以藻酸鹽為基底之黏合劑與流變調整劑,及其使用與製造方法。