FUNCTION Whiten your teeth completely and naturally. Especially for people who with black teeth and yellow teeth caused by smoking, tea drinking, coffee and wine, Remove tartar and peculiar smell, Leaving your mouth clean and fresh.How to Use?Step 1: Slight wet toothbrush bristlesStep 2: Dip brush into charcoal powder in jarStep 3: Gently brush teeth for approximately 2 minutesStep 4: Brush once again with water or regular toothpaste to remove any residue. Step 5: Enjoy your white teeth!CAUTIONS:Use only as directed.Keep out of reach of children.Store in dry place, out of direct sunlight.Charcoal can stain grout fabrics; Protect counters, floors and clothing before using.Stop use if irritation occurs.