Colgate Toothbrush Slim Soft Charcoal Spiral P1 Product Details Colgate Slim Soft Charcoal Spiral Toothbrush - Deep cleaning yet gentle + Charcoal spiral bristles. 1. <0.01mm* slim tip bristles specially designed to sweep away food and plaque when brushing from along the gum line and narrow gaps* between teeth. 2. Sprial brisltes infused with silver ion inhibits bacteria build-up on bristles** 3. All black Binchotan Charcoal bristle tip<0.01mm.* *Diameter of bristle tip is less than 0.01mm. **The bristles do not kill bacteria in your mouth or protect you against disease. Always clean product after use.