1. The competition of polyaspartic acid on the surface of hydroxyapatite (HAP, the main component of teeth) is very strong. The negatively charged polyaspartic acid repels bacteria with the same negative charge and reduces the adsorption of microorganisms on the tooth surface, thus it will inhibi the formation of plaque in the initial stage.

2. The protein-like structure competes with the proline-rich protein on the tooth surface, thus limiting the attachment of polyphenols and slowing down the staining process.

3. The chelating property brought by polycarboxyl groups can effectively chelate calcium ions which eliminate calcification deposits, thus reducing the formation of tartar.

4. It can put in mouthwash to prevent bad breath.