Colgate Zig Zag Charcoal Medium Tooth Brush cleans teeth using dual angled-pointing cleaning-tip bristles designed to effectively reach deep and clean back teeth. Circled bristle pattern helps gently remove stains to reveal natural whiteness of your teeth. Tongue cleaner removes odour-causing bacteria. specially designed to sweep away food and plaque from: • Along the gum line • Narrow gaps between teeth Toothbrush with charcoal infused bristles helps remove plaque vs. ordinary end rounded bristles.