Incense sticks are made from aromatic materials designed to smolder slowly after being lit. You ignite the tip, allow it to catch briefly, then extinguish the flame so the stick continues to glow and release fragrant smoke.
Because incense involves combustion, placement matters. Use an appropriate incense holder on a stable, heat-resistant surface, keep burning incense away from curtains, paper, pets, children, and other flammable materials, and never leave it unattended. Ventilation can also help prevent smoke from becoming overwhelming. Always follow the instructions that came with the incense and holder.