Oral-B UltraThin Green Tea toothbrush has individually tapered bristles that are infused with essence of green tea, providing a soothing, gentle and deep clean that improves your gum health in 14 days. Unlike most thin toothbrushes in the market, Oral-B UltraThin Green Tea has bristles that are individually tapered at the tips, to gently clean between teeth and below the gum line. Made with real green tea essence within the bristle two times more flexible bristle tips compared to regular brushes. 0.01mm tips Ultrathin bristles reach up to two times deeper between teeth against regular, flat trim bristles.