The Essence Project was a Taelon initiative created by Zo'or with the intention of studying Human emotion in order to find the necessary traits associated with survival. It involved the disstilation of a Human's electro-chemical processes for love and fear that was crystallized in a form that the Taelons could ingest.
It was the brainchild of Dr. Randy Elston though his continued research was stopped due to a patent filled by Doors International. A test subject for the project was Richard Palmer, the brother of Renee Palmer. Da'an opposed the project as he believed it to be abhorent but he was blackmailed by Ronald Sandoval who offered Da'an continued Kryss in exchange for his participation in the Essence Project. (Episode: Essence)