No aarti is performed without camphor. Camphor when lit burns itself out completely without leaving a trace of it.Camphor represents our inherent tendencies or vasanas. When lit by the fire of knowledge about the self, the vasanas burn themselves out completely, not leaving a trace of ego.Ego is responsible for a sense of individuality that keeps us separate from the Lord or consciousness.In addition, camphor when burns, emits a pleasant perfume. This signifies that as we burn our ego we can only spread love and nothing else.

(Disclaimer: The views expressed in this write up are my own).