The chemicals have to be in contact with each other in order for any type of chemical reaction to take place. One of the most common examples of a chemical reaction is the rusting of a fence. The combining of the metal and the oxygen causes bonds to break and new ones to be created, which results in the creation of iron oxide or rust.
The ear canal cleans itself with a waxy secretion called cerumen. Cerumen is resistant to water, sticky (to trap dust) and migrates out of the ear canal to self-clean the ear. Sometimes, the wax builds up and causes symptoms, including mild deafness and a sensation of fullness inside the ear.
Well, I personally stumbled across ear wax hash in my schooling years, and was completely enthralled by the experience I had with it. If you have ever seen or used ear wax hash it has a similar consistency to the wax that comes out of your ear. The process that makes ear wax hash pretty much removes all plant parts from your cannabis and makes your concentrate a near pure concoction of cannabinoid chemicals derived straight from your favorite strain.