PROBLEM TO BE SOLVED: To provide a liquid composition for oral cavity that has a high effect of removing an already adhered colored dirt for effectively preventing an exogenous discoloration of teeth, and has high stability.SOLUTION: The liquid composition for oral cavity includes the following components (A), (B) and (C): (A) 0.02-0.5 mass% of acyl sarcosine or its salt (B) 0.5-5 mass% of polyphosphoric acid or its salt and (C) 75-95 mass% of water. The liquid composition does not include sulfate or its salt as an anionic surfactant, or its content is 0.001 mass% or less. The mass ratio (B/A) between the contents of the component (A) and the component (B) is 2-50.COPYRIGHT: (C)2013,JPO&INPIT【課題】歯の外因性着色を効果的に防止するうえで、すでに付着した着色汚れを除去する効果に優れるとともに、高い安定性をも有する液体口腔用組成物を提供する。【解決手段】次の成分(A)、(B)及び(C):(A)アシルサルコシン又はその塩 0.02~0.5質量%、(B)ポリリン酸又はその塩 0.5~5質量%、及び(C)水 75~95質量%を含有し、かつ(D)アニオン界面活性剤としての硫酸エステル又はその塩を含有しないか、或いは含有量が0.001質量%以下であり、成分(B)と成分(A)の含有量の質量比(B/A)が2~50である液体口腔用組成物。【選択図】なし
