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.
The ear wax that is naturally produced by your body helps to clean, protect, and lubricate your ears. But ear wax sometimes builds up excessively, and if it does, you may want to turn to methods of ear wax removal. Ear wax, also called cerumen, is a sticky, shiny substance produced by the wax glands located in the outer part of your ear canal (the canal that separates the fleshy outer ear from the inner ear).