COMPACT HEAD/MEDIUM TEXTURE. FOR TEETH & GUMS YOUR DENTIST WILL BE PROUD OF. REDUCES PLAQUE UP TO 48% MORE EFFECTIVELY. The hyG IONIC is clinically proven by studies at Universities in the USA and Japan to remove plaque up to 48% more effectively than ordinary manual toothbrushing. "Iontophoretic" action improves the effectiveness of fluoride in toothpaste helping to reduce hypersensitivity in teeth. If allowed to build up, plaque can lead to cavities, gum problems and may cause bad breath. Plaque is difficult to remove because it has a positive polarity (+), while teeth have a negative polarity (-). The opposite polarity naturally attracts plaque to your teeth. The hyG IONIC toothbrush electronically breaks this ionic bond by temporarily reversing the polarity of tooth surfaces (+). As you brush, plaque molecules are actively repelled by your teeth and drawn to the negatively charged bristles (-). INNOVATION IN ORAL CARE. HyG IONIC PATENTED.