Organic B Herbal Charcoal Dental Powder has antibacterial properties. It can help to make your teeth look cleaner by removing plaque and stains. You might use a charcoal toothbrush to help remove the stains caused by food and drink, such as coffee, tea and red wine, as well as from smoking.
Directions:
Dip a wet brush to the activated charcoal powder to pick a small amount and brush it for 2-3 minutes. Rinse thoroughly to remove all the toxins from your mouth.
Activated charcoal powder is created when charcoal is heated with a gas. 
People have used charcoal powder for teeth cleaning for many years. The Romans used charcoal powder to clean their teeth, and a 19th-century recipe for toothpaste contained charcoal powder too. Charcoal dental powder has risen in popularity again over the last ten years or so, and they are particularly trendy right now.