Earwax buildup happens when your ear canal’s natural self-cleaning process gets disrupted, either by something you’re doing (like using cotton swabs) or by factors outside your control (like aging or the shape of your ear canals). About 19% of the general population deals with earwax impaction at some point, and that number climbs to roughly 30% among older adults.
How Your Ears Clean Themselves
Your ear canal produces wax through two types of glands working together. Sebaceous glands, attached to tiny hair follicles, secrete an oily substance that keeps the skin inside your ears from drying out. Ceruminous glands, which are modified sweat glands, add antimicrobial proteins that fight off bacteria and fungi. The result is earwax: a mixture of these secretions, dead skin cells, and hair held together by fatty acids, cholesterol, and other natural compounds.
Once formed, earwax is supposed to migrate outward on its own. Every time you chew food or talk, your jaw muscles flex and subtly shift the walls of your ear canal, nudging wax toward the opening of your ear. There, it dries up, flakes off, or simply falls out. When this conveyor belt works properly, you never need to think about earwax at all. Buildup happens when something interrupts this process or when production outpaces what your ears can clear.
Cotton Swabs and Other Objects
The most common cause of earwax buildup is, ironically, trying to clean your ears. Inserting a cotton swab, bobby pin, or any other object into the ear canal pushes wax deeper, past the point where jaw motion can move it back out. Once wax is packed against the eardrum, it has no way to exit naturally. People who swab regularly often create a cycle: they push wax deeper, feel more fullness, and swab again, compacting the blockage further with each attempt. Swabs can also scratch the delicate canal skin, leading to irritation or infection that causes swelling and makes the problem worse.
Hearing Aids, Earbuds, and Earplugs
Anything that sits inside your ear canal for extended periods can block the natural outward flow of wax. Hearing aids are a major contributor, which partly explains the high impaction rate among older adults who wear them daily. Earbuds, earplugs, and in-ear monitors create the same barrier. The device physically prevents wax from reaching the ear opening, and the friction of inserting and removing it can also push existing wax deeper. If you wear any of these regularly, you’re more likely to need periodic wax removal even if you never touch a cotton swab.
Ear Canal Shape and Anatomy
Some people are simply built for buildup. Ear canals that are unusually narrow, whether from birth, chronic inflammation, or past injury, give wax less room to travel and make blockages more likely. Bony growths inside the canal, called osteomas or exostoses, create physical obstacles that trap wax behind them. These growths are especially common in people who spend a lot of time in cold water, like surfers and swimmers. If you’ve had recurring impaction since childhood, the shape of your canals is a likely factor, and it’s not something you can change on your own.
How Aging Changes Your Earwax
As you get older, the glands inside your ear canal produce earwax that’s drier and harder. Drier wax doesn’t slide along the canal as easily, so it tends to accumulate rather than migrate out. This shift in consistency is the main reason impaction affects roughly 30% of older adults compared to 19% of the general population. Hair growth inside the ear canal also increases with age, which can further obstruct the path wax needs to travel. For older adults who also wear hearing aids, these factors compound each other significantly.
Overproduction Without a Clear Trigger
Some people simply produce more earwax than average. Genetics play a role in both the amount and type of wax your glands make. Stress, anxiety, and physical exertion can also temporarily increase production, since ceruminous glands are modified sweat glands and respond to some of the same signals. Skin conditions like eczema or psoriasis affecting the ear canal can accelerate skin cell turnover, adding more dead cells to the mix and increasing wax volume. In these cases, buildup can happen even without any of the mechanical causes listed above.
Signs You Have a Blockage
Earwax buildup doesn’t always cause symptoms. Small accumulations often go unnoticed. But when wax fully blocks the canal, you’ll typically notice a feeling of fullness or pressure in the affected ear, sometimes accompanied by gradual hearing loss that worsens over days or weeks. Other common signs include ringing in the ear, itchiness, ear pain, and occasionally dizziness. Some people notice an odor or discharge. These symptoms can mimic an ear infection, so it’s worth having someone look in the ear before assuming the cause.
Safe Ways to Manage Buildup
Three approaches are considered equally effective for clearing impacted earwax: softening drops, irrigation, and manual removal. No single method has been shown to work better than the others.
- Softening drops: Over-the-counter drops, or even plain water or saline, can soften hardened wax over a few days so it can exit on its own or be flushed out more easily.
- Irrigation: A gentle stream of warm water directed into the ear canal can wash out softened wax. This is commonly done in a clinic but home irrigation kits exist as well.
- Manual removal: A clinician uses a small instrument or suction to pull wax out under direct visualization. This is the preferred option if you have a hole in your eardrum or tubes in your ears.
Ear candling, which involves placing a lit hollow cone in the ear, has not been proven effective and carries real risks of burns and canal damage. If an initial treatment doesn’t fully clear the blockage, a specialist with the right tools and training can safely finish the job.
For people prone to recurring buildup, periodic softening drops every few weeks can help keep wax from compacting. The goal isn’t to eliminate earwax entirely. It’s there for good reason: waterproofing your canal, trapping dust and debris before it reaches your eardrum, and fighting off infections. The aim is just to keep it moving.