Step 1 : Introduction to the question "What is cerumen?"
...The waxy, yellowish substance produced in the human ear canal is cerumen. This earwax functions as a protective coating for the skin covering the ear canal. Cerumen cleans the ear canal and provides lubrication while providing a protective barrier against water, bacteria and even insects. A build-up of earwax may result in an earache, hearing loss, itching, coughing or ringing in the ears. Removal of an earwax impaction is best done by a medical professional. Source: NationalSinusInstitute.com
