Incense ingredients are substances that are burned to produce a fragrant smoke. The three most common incense ingredients are RESIN, MYRRH, and ELEMI. RESIN is a natural substance that is produced by certain trees and plants. MYRRH is a gum-like RESIN that is obtained from the Commiphora tree. ELEMI is a yellowish RESIN that is derived from the Canarium luzonicum tree. All three of these ingredients are commonly used in incense production.