Earwax, medically known as cerumen, is a natural substance produced by glands in the ear canal. It plays an essential role in protecting the ear by trapping dirt, dust, and microorganisms, and preventing them from reaching deeper parts of the ear. Typically, earwax is self-cleaning, as it gradually moves out of the ear canal, where it can be washed away. However, in some cases, earwax can accumulate over time, leading to blockages and a host of health issues.