Mizuha Crystal Fresh innovative tooth brush no need to use a toothpaste.
Natural ceramics (N CERA) is a type of quartz schist and is produced only in Aichi prefecture in Japan. It has high strength and is excellent in abrasion resistance, impact resistance, heat resistance, chemical resistance, generating a large amount of negative ions. This ion effect makes the surface of teeth slippery, and it achieves sufficient cleaning effect without using toothpaste. Natural ceramics is pulverized very finely an othen kneaded in the bristle material, so there is no worry of damaging the tooth surface and gums.