Unscented incense cones are incense made from a neutral base of combustible materials without any added fragrance. They are often used as a blank base for customization, allowing users or manufacturers to add their own scents. The incense cones come in a natural brown shade and measure around 2.5cm.

To add fragrance, Dipropylene Glycol (DPG) is commonly used as a solvent and carrier oil. Fragrance oils are first diluted in DPG—typically at a ratio that ensures smooth absorption without oversaturation. The unscented incense sticks are then dipped into or sprayed with this mixture and left to dry. As the DPG evaporates slowly, it helps the fragrance bind evenly to the incense, resulting in a consistent scent release when burned.