With the Oral-B Pro-Flex Charcoal Manual Toothbrush, you can discover a whiter smile and remove plaque. That’s because its dual-flexing head design combined with stain erasing bristles, work together to remove up to 90% of surface teeth stains and reveal a more beautiful white smile. Gentle on gums, but tough on stains, the Pro-Flex Charcoal toothbrush is the revolution you’ve been hoping for in your manual toothbrush.