PROBLEM TO BE SOLVED: To provide an oral care composition having a function for compensating a reduced amount of the secretion amount of saliva and suppressing the proliferation of oral bacteria.SOLUTION: There is provided an oral care composition which contains a substance effective for oral hygiene (substance having antibacterial action and bactericidal action) and a substance expressing viscosity (substance having thickening action such as thickener), and whose viscosity can be adjusted by an added amount of water. There is provided an oral care composition in which a stay amount and/or a release amount of a substance effective for oral hygiene in an oral cavity can be adjusted by an added amount of water, and an oral care composition whose viscosity is not changed by an effect of saliva. The substance expressing viscosity has water-retaining effect, and contains xanthan gum. The substance effective for oral hygiene is plant polyphenol and/or bacteriocin.COPYRIGHT: (C)2014,JPO&INPIT【課題】唾液の分泌量の減少分を補完でき、さらに口腔内細菌の増殖を抑制できる機能を持った口腔ケア用組成物を提供する。【解決手段】口腔衛生に有効な物質(抗菌作用、殺菌作用を持つ物質)と粘性を発現する物質(増粘剤等の増粘作用を持つ物質)とを含有し、粘性を加水量により調整できる口腔ケア用組成物。口腔衛生に有効な物質の口腔内における滞留量及び/又は除放量を加水量により調整できる口腔ケア用組成物。唾液の影響により粘性が変化しない口腔ケア用組成物。粘性を発現する物質は保水効果を有し、キサンタンガムを含むものである。口腔衛生に有効な物質は植物ポリフェノール及び/又はバクテリオシンである。【選択図】図1