earwax

Earwax, also known by the medical term cerumen, is a yellowish waxy substance secreted in the ear canal of humans and other mammals. It protects the skin of the human ear canal, assists in cleaning and lubrication, and also provides some protection from bacteria, fungi, insects and water. Excess or compacted cerumen can press against the eardrum and/or occlude (block) the external auditory canal or hearing aids, potentially hindering hearing.