Attention: The best effect of backflow fragrance is achieved by strict environmental requirements: ① there should not be a little wind indoors; ② the indoor temperature should not be too high, as overheated air will carry smoke upward. It is recommended to have a temperature of 20-22 degrees Celsius

How to clean: Tar residue on the incense burner is a normal phenomenon. You can use hot alkaline water (soda ash) or hot baking soda to soak for a few minutes.