The Charcoal Brushing Experience Thinking about switching to a different kind of manual toothbrush? Go for the Colgate Optic White Pro Series Charcoal Manual Toothbrush for Adults- 2 Pack. Like a conventional toothbrush, a charcoal toothbrush has a unique design with charcoal-infused bristles. Additionally, a multi-height bristle design offers better stain removal* between teeth and along the gum line. Try the Colgate Optic White Pro Series Charcoal Manual Toothbrush for Adults- 2 Pack today!