Incense is aromatic biotic material which releases fragrant smoke when burned. The term refers to the material itself, rather than to the aroma that it produces. Incense is used for aesthetic reasons, and in therapy, meditation, and ceremony. It may also be used as a simple deodorant or insectifuge.

Incense is composed of aromatic plant materials, often combined with essential oils. The forms taken by incense differ with the underlying culture, and have changed with advances in technology and increasing diversity in the reasons for burning it. Incense can generally be separated into two main types: “indirect-burning” and “direct-burning”. Indirect-burning incense (or “non-combustible incense”) is not capable of burning on its own, and requires a separate heat source. Direct-burning incense (or “combustible incense”) is lit directly by a flame and then fanned or blown out, leaving a glowing ember that smoulders and releases fragrance. Direct-burning incense is either a paste formed around a bamboo stick, or a paste that is extruded into a stick or cone shape.

Incense sticks also called agarbatti’s are fragranced sticks used from ancient period by people all over the world. The evolution of incense stick could be from the burning of aromatic woods in the primitive period. As mankind gained civilization and became more religious, these fragranced agarbattis played important role in daily rituals.