Features special "stain cleaner bristles" where each bristle is covered in rubber. The triangular cross-section of the bristles effectively removes discoloration (stains) from the tooth surface, restoring the teeth's natural whiteness*. *The degree of natural whiteness varies from person to person, and this product cannot remove the yellowish color where the underlying dentin is visible. The slim head reaches deep into the molars. The compact head allows for thorough cleaning of every corner. ■Bristle hardness: Medium ■Heat resistance temperature: 60 degrees Celsius *Color cannot be selected.