The present invention relates to an oral composition which can remove deposited stains in interprismatic spaces on enamel surface layers of teeth selectively and effectively and can also prevent the adherence and deposition of new stains effectively to provide beautiful gloss that the teeth originally have had. Namely, the present invention is an oral composition containing (A) phytic acid or a salt thereof and (B) tripolyphosphoric acid or a salt thereof, wherein the sum total of the content of the component (A) in terms of phytic acid content and the content of the component (B) in terms of acid content is a specified value, the ratio of the mass of the component (B) in terms of acid content to the mass of the component (A) in terms of phytic acid content ((B)/(A)) is a specified value, a specific polyvalent metal or a salt thereof (C) is not contained or the component (C) is contained in an amount of less than 0.1 time the number of moles of the component (A) in terms of phytic acid content, and the pH value of a solution prepared by diluting the oral composition with water at a concentration of 30% by mass is 5.5 to 6.5 inclusive at 25 DEG C.本發明係關於一種口腔用組合物，該口腔用組合物能夠有選擇地且有效地去除存在於牙齒之牙釉質表層之釉柱間隙中的已沈積之污垢，並且亦有效地防止新污垢附著及沈積，從而給牙齒帶來原本所具有之亮麗光澤。 即，本發明之口腔用組合物含有下述成分(A)植酸或其鹽、及成分(B)三聚磷酸或其鹽，且成分(A)之植酸換算量與成分(B)之酸換算量之合計含量、及成分(B)之酸換算量與成分(A)之植酸換算量之質量比((B)/(A))為特定之值，該口腔用組合物不含特定之多價金屬或其鹽(C)，或者含有相對於成分(A)之植酸換算量未達0.1倍莫耳之成分(C)，且用水稀釋至30質量%時之於25℃下之pH值為5.5以上且6.5以下。
