Use:1.incense into the perfume bottle-specific oil 7-8 minutes over.

2. put the core head into the bottle and stay for 5-10minutes,so that core head and cotton core can fully absorb the oil.3. lit the first core about 2-3 minutes before blow out. 4. after blow out cover the hollow cap, so as not to inadvertently burns 5. if nonuse you can cover the cap.