Oral composition

Abstract

The present invention relates to an oral composition which selectively and effectively removes deposited stains present in the interprismatic space on the tooth enamel surface layer and also effectively prevents new stains from adhering and depositing to thereby provide the beautiful gloss that the teeth inherently have. More specifically, the present invention provide an oral composition which comprises the following ingredient (A) phytic acid or a salt thereof and ingredient (B) tripolyphosphoric acid or a salt thereof, wherein a total content of ingredient (A) in terms of phytic acid and ingredient (B) in terms of acid, and a mass ratio of ingredient (B) in terms of acid to ingredient (A) in terms of phytic acid ((B)/(A)) have specific values, the oral composition comprises (C) a specific polyvalent metal or a salt thereof (C) or comprises ingredient (C) in a molar amount of less than 0.1 times that of ingredient (A) in terms of phytic acid, and has a pH at 25° C. of 5.5 or more and 6.5 or less when diluted with water to 30 mass %.

Dependencies are inferred from the claim text.