The dirty dropping effect of the gearwheel is high, at the same time offers the constituent for the two-layer amount mold release liquid buccal cavity which the oily impression and the convergence impression lighten and possess the satisfactory use impression. The oily fluid which is the liquid with the 25 containing (A), the oil stratum and the condensed phosphoric acid which becomes or containing that salt (B), the water formation which becomes the two-layer separating, it becomes, the constituent for the two-layer amount mold release liquid buccal cavity which features that the aforementioned oily fluid (A) content is, is during all the compositions 15 - 60 mass % at the same time (A) the component and (B) ratio (a)/(b) of the component as a mass ratio 10 - 3,000. Furthermore, water formation, the water soluble high-molecular material (C) and/or containing quarternary ammonium salt (D), the constituent for the above-mentioned liquid buccal cavity which becomes.歯の汚れ落とし効果が高く、かつ油性感や収斂感が軽減し良好な使用感を有する2層分離型液体口腔用組成物を提供する。25℃で液体である油剤(A)を含有してなる油層と、縮合リン酸又はその塩(B)を含有してなる水層との2層が分離してなり、前記油剤(A)の含有量が全組成中15~60質量%であり、かつ(A)成分と(B)成分との比率(A)/(B)が質量比として10~3,000であることを特徴とする2層分離型液体口腔用組成物。更に、水層が、水溶性高分子物質(C)及び/又は4級アンモニウム塩(D)を含有してなる上記液体口腔用組成物。
