This product contains natural ingredients that deeply cleanse and whiten teeth, effectively solve the dental problems such as yellow teeth, black teeth, and gray teeth due to smoking, drinking tea or coffee and food, reduce plaque & tooth stains, make your breath fresh, refresh your taste, protect your gums and maintain oral health. Usage: Rotate the box to open the inner protective cover, use a spoon to take the proper amount of tooth powder, and place it on the cover. Use a wet toothbrush or directly wet the toothbrush to dip into the proper amount of tooth powder and brush your teeth normally for 2-3 minutes. Rinse your mouth with water. It can be used twice a day. Ingredients: Calcium Carbonate, Charcoal Powder, Hydrated Silica, Sodium Lauryl Sulfate, Flavor, Menthol, Sucralose. Storage: Store in a cool, dark, dry place. Keep out of reach of children. Avoid direct sunlight and accidental ingestion.