| abstract |
Provided is an oral composition whereby protein staining on a tooth surface can be adequately removed, and adhesion of protein staining to a tooth surface can be effectively prevented, and which also makes it possible to satisfactorily perceive a cleaning effect inside the mouth. An oral composition containing the following components (A) and (B): 0.005% by mass to 0.3% by mass of N-acylamino acid or a salt thereof (A) and 0.005% by mass to 0.5% by mass of pyrophosphoric acid or a salt thereof (B), the mass ratio ((B)/(A)) of component (A) and component (B) being 0.05 to 40, and the total content of component (A) and component (B) being 0.01% by mass to 0.6% by mass. |