Impacted cerumen is a buildup of earwax that blocks the ear canal enough to cause symptoms, prevent a doctor from examining your eardrum, or both. It affects roughly 1 in 5 people over age 12 in the United States, and that rate climbs to about 1 in 3 among adults over 70. While earwax itself is normal and protective, a blockage can muffle your hearing, cause pain, and occasionally lead to infection if left in place.
What Earwax Actually Does
Earwax (the clinical term is cerumen) is a blend of fats, cholesterol, wax esters, and other compounds produced by glands in the outer third of your ear canal. It serves several jobs at once: moisturizing the canal’s delicate skin, trapping dust and debris, repelling water, and even fighting bacteria by keeping the canal slightly acidic. Its texture varies from wet, sticky, and yellow-brown to dry, crumbly, and grayish, largely depending on genetics.
Under normal conditions, earwax slowly migrates outward on its own, pushed along by jaw movements when you chew or talk. It eventually flakes off or washes away. Impaction happens when that self-cleaning process is disrupted, either because too much wax is produced or because something blocks its natural exit.
Causes and Risk Factors
The most common culprit is putting things in the ear canal. Cotton swabs, earbuds, earplugs, and hearing aids can all push wax deeper instead of letting it migrate out. A study published in Pediatrics found that cotton-swab injuries sent children to the emergency room at least 35 times a day over a 20-year period, with complications including bleeding ear canals and perforated eardrums.
Anatomy plays a role too. People with naturally narrow or unusually shaped ear canals, heavy hair growth inside the canal, or certain skin conditions are more prone to blockages. Older adults face a combination of factors: the ear canal changes shape with age, hair growth inside the canal increases, and the wax itself tends to become drier and harder, making self-cleaning less effective. That helps explain why prevalence nearly doubles after age 70.
Hearing aid users face a particular challenge. The device sits inside the canal for hours each day, acting as a physical barrier to wax migration while also stimulating the glands that produce it.
Symptoms of Impacted Cerumen
A small amount of excess wax usually causes no problems. Once the buildup reaches the point of true impaction, you may notice:
- Muffled hearing that worsens gradually, sometimes after a shower when water causes the wax to swell
- A feeling of fullness or pressure in the affected ear
- Earache ranging from a dull ache to sharper pain
- Tinnitus (ringing, buzzing, or humming)
- Itchiness inside the ear canal
- Dizziness, particularly if the blockage presses against the eardrum
- Discharge or odor, which can signal trapped moisture or early infection
These symptoms overlap with ear infections and other conditions, so diagnosis involves a clinician looking into the canal with an otoscope and confirming that a visible wax mass lines up with the symptoms you’re experiencing.
What Happens If You Ignore It
Left untreated, impacted cerumen can do more than muffle sound. Wax pressing against the eardrum for weeks or months may cause persistent discomfort, and the trapped moisture behind the blockage creates a warm, damp environment where bacteria thrive. This raises the risk of otitis externa, an infection of the outer ear canal that brings swelling, redness, and sometimes significant pain. In older adults who already have some age-related hearing loss, even a partial wax blockage can tip hearing below the threshold needed for comfortable conversation, contributing to social withdrawal.
At-Home Treatment
Mild impaction often responds to over-the-counter ear drops designed to soften the wax so it can work its way out naturally. The most widely available contain a 6.5% carbamide peroxide solution. The typical regimen for adults is 5 to 10 drops in the affected ear twice a day for up to four days, tilting your head to let the solution sit in the canal for several minutes. Placing a small cotton ball at the ear’s opening can help keep the drops in contact with the wax longer. For children under 12, the dose is smaller (1 to 5 drops depending on the child’s size), though it’s worth checking with a pediatrician first.
Other softening options include mineral oil, baby oil, glycerin, or saline drops. These won’t dissolve wax the way peroxide-based drops do, but they can soften it enough to let it migrate out over a few days. If symptoms don’t improve after four or five days of consistent use, professional removal is the next step.
Professional Removal Methods
Clinicians use three main approaches, sometimes in combination.
Manual Removal
A provider uses small instruments like curettes, hooks, or forceps under direct visualization with a headlight, otoscope, or microscope. This is the most precise method and the safest option for people who have a hole in the eardrum, ear tubes, or a history of ear surgery, since it doesn’t involve flushing liquid into the canal.
Irrigation
Warm water (body temperature to avoid dizziness) is gently flushed into the canal with a syringe or electronic irrigator. The water flows behind the wax plug and pushes it out. Irrigation is not appropriate if you have a perforated eardrum, active ear infection, prior ear surgery, or a canal that is significantly narrowed by swelling or a growth.
Suction
A thin suction tip is guided into the canal to vacuum out softened or loose wax. It can be noisy but is generally quick and well tolerated.
Many providers will ask you to use softening drops for a few days before your appointment, which makes any of these methods easier and more comfortable.
Preventing Future Buildup
The single most effective prevention step is to stop inserting anything into the ear canal. Cotton swabs, bobby pins, twisted napkin corners, and ear candles all push wax inward, risk injuring the canal or eardrum, and override the ear’s built-in cleaning system. If you need to clean your outer ear, a damp washcloth over your finger is enough.
If you wear hearing aids, remove and clean them daily. Ask your audiologist about scheduling periodic wax checks, since you may not notice gradual buildup until the device starts fitting poorly or feedback increases. People who are naturally heavy wax producers or have narrow canals may benefit from using softening drops once or twice a month as maintenance, letting the drops sit for a few minutes before tilting the head to drain.