The present invention relates to a composition for the oral cavity, said composition having an effect of improving the fluorine ion uptake into the enamelum of teeth and an effect of promoting recalcification. Provided is a composition for the oral cavity, comprising: 0.005-2 mass% inclusive, in terms of fluorine atoms, of component (A) which is at least one kind of fluorine-ion supplying compound selected from among sodium fluoride, ammonium fluoride, potassium fluoride, sodium monofluorophosphate and tin fluoride； 4-30 mass% inclusive of component (B) which comprises higher alcohols having 12-22 inclusive of carbon atoms and contains cetanol (b1) and stearyl alcohol (b2)； 0.1-10 mass% inclusive of component (C) which is at least one kind of surfactant selected from among a nonionic surfactant (c1) selected from among a sorbitan fatty acid ester and a polyoxyethylene sorbitan fatty acid ester and an anionic surfactant (c2) selected from among a fatty acid having 12-22 inclusive of carbon atoms and a salt thereof； and component (D) which is water. In the composition for the oral cavity: the content of component (c1) is equivalent to or larger than a preset amount； the ratio by mass of the amount, in terms of fluorine atoms, of component (A) to the content of component (B) [(A)/(B)] is a preset ratio； and the amount by mol of a polyvalent metal compound (E), other than component (A), is a preset amount.本發明係關於一種氟離子向牙釉質之導入性提高，再鈣化效果得到提高之口腔用組合物。 即，本發明提供一種口腔用組合物，其含有：以氟原子換算量計為0.005質量%以上且2質量%以下之成分(A)選自氟化鈉、氟化銨、氟化鉀、單氟磷酸鈉、及氟化錫中之1種或2種以上之氟離子供給化合物；4質量%以上且30質量%以下之成分(B)包含鯨蠟醇(b1)、及硬脂醇(b2)之碳數為12以上且22以下之高級醇；0.1質量%以上且10質量%以下之成分(C)包含選自非離子界面活性劑(c1)、以及陰離子界面活性劑(c2)中之1種或2種以上之界面活性劑，其中該非離子界面活性劑(c1)係選自山梨糖醇酐脂肪酸酯、及聚氧乙烯山梨糖醇酐脂肪酸酯，該陰離子界面活性劑(c2)係碳數為12以上且22以下之脂肪酸或其鹽；以及成分(D)水；且成分(c1)之含量為特定量以上，成分(A)之氟原子換算量與成分(B)之含量之質量比((A)/(B))、除成分(A)以外之多價金屬化合物(E)之莫耳量為特定量。
