Patchouli natural backflow incense cones

Box with 12 patchouli scented backflow incense cones. Backflow incense cones have a hole on the bottom that corresponds with the hole on a backflow incense burner, enabling the smoke to flow out downwards. They also produce more smoke to create the waterfall effect of the smoke flowing down the incense burner. This makes them unsuitable for normal incense burners. A cone lasts for about 15-20 minutes. 100% natural, ingredi?nts"natural frankincense incense resin, joss-bark powder, wood powder, guar gum, incense resin, essential oils.