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.
Wax is an important and natural secretion found in the ear. It protects the ear against dust, dirt and bacteria, so it helps to prevent infection. Wax, or cerumen as it is also known, is composed of epithelium (skin cells), dust and oily secretions from the sebaceous and ceruminous glands in the ear canal.These secretions lubricate the ear canal and prevent it becoming too dry. Wax is a natural secretion and if it is not a problem it is best left alone. 2  Do not use cotton buds, hair grips, a pencil or other items to try to remove the wax. 3  Consider ear wax softening drops or olive oil as the first option unless you are experiencing pain or discharge.