Backflow Cones by Soul Sticks feature traditional herbs and resins formulated to produce a distinctive cascading smoke effect. Rather than rising upward like standard incense cones, the thicker smoke flows downward, creating a mesmerizing visual display. Each cone is dipped in concentrated fragrance oil for a minimum of 48 hours, ensuring a rich, pleasant aroma throughout the burn. No chemical additives are used—the enhanced smoke density comes entirely from the natural blend of ingredients.