Dragons Head Backflow Incense Burner, Backflow incense flows downward through a backflow burner and creates a mist around the product. This item should be placed on a heat resistant surface. When backflow incense burns, the mist it creates may leave a slight residue on the burner and the surface it is placed on. This residue comes from the natural oils and resins in incense and can be cleaned with a damp cloth. Never leave incense burning unattended. Â Some of our small backflow burners come with a small foam mat that the burner can be placed on when in use, but it is not heat proof so as stated above , burner should be placed on a heatproof surface before use.Material: Resin and metalFor use with:Â Backflow Incense Cones OnlyCone Included:Â Yes - 1 Cone (Unscented) Approximate burn time: 30 minutes Sold in random colors ONLY