What is earwax and why does it build up?
Earwax, medically called cerumen, is a natural substance produced by glands in the ear canal. Far from being dirty, it plays an important protective role: it traps dust and debris, keeps the delicate skin of the ear canal moisturised, and has properties that help defend against infection. Normally, the ear is self-cleaning — old wax gradually moves out of the canal on its own, carrying trapped debris with it, and washes away.
Sometimes, though, wax is produced faster than it clears, or its natural movement out of the ear is disrupted, and it builds up and hardens into a blockage. This is more likely in people who have naturally narrow or hairy ear canals, who wear hearing aids or earbuds, or — very commonly — who use cotton buds, which tend to push wax deeper rather than remove it. When wax builds up enough to block the canal, it can affect hearing and cause discomfort.
Symptoms of earwax buildup
Earwax buildup usually develops gradually, and the symptoms centre on the affected ear. Common symptoms include:
- •A feeling of fullness or blockage in the ear
- •Muffled or reduced hearing on the affected side
- •Earache or a mild feeling of discomfort or pressure
- •Ringing in the ear (tinnitus)
- •Itchiness in the ear canal
- •Occasionally dizziness, if the blockage is significant
- •A sense that your own voice sounds different or louder
How to safely remove earwax at home
The single most important rule is never to insert cotton buds, fingers, hairpins or any other object into the ear canal to try to remove wax. This usually pushes the wax deeper, packs it down harder, and risks damaging the delicate ear canal or eardrum. The ear is designed to clean itself, and the goal of home treatment is simply to help that natural process along by softening the wax so it can work its way out.
The safest home method is to use softening drops. A few drops of olive oil or almond oil (or pharmacy ear drops) in the affected ear, once or twice a day for several days, softens hardened wax so it migrates out naturally. Lying with the treated ear facing up for a few minutes helps the drops work. Many blockages clear this way within a week or two. Warm — not hot — drops are more comfortable. Avoid ear candling, which is ineffective and can cause burns.
When home treatment is not enough
If softening drops do not clear the blockage after a couple of weeks, or if symptoms are troublesome, a healthcare professional can remove the wax safely. Common methods include irrigation (gently flushing the ear with water), microsuction (using gentle suction under direct vision), or manual removal with a small instrument. These are done by trained professionals — a pharmacist, nurse, GP or ear specialist — and are quick and generally comfortable.
It is worth seeing a professional rather than persisting with home attempts if the ear is painful, if there is any discharge, or if you have significant hearing loss, as these can point to something beyond simple wax, such as an infection. People who should not attempt home removal at all, and should seek professional care, include those with a perforated (burst) eardrum, a current ear infection, or ear surgery in the past — putting drops or water in these ears can cause problems.
Preventing earwax problems
Because the ear is self-cleaning, the best prevention for most people is simply to leave the ears alone and avoid inserting anything into the ear canal. Cotton buds, in particular, are a leading cause of impacted wax and should be kept to cleaning only the outer ear if used at all. Resisting the urge to 'clean' inside the ear allows the natural outward movement of wax to do its job.
For people prone to buildup — such as hearing aid users or those with narrow canals — using softening drops occasionally, for example once a week or as advised, can help keep wax from hardening and accumulating. If you are unsure how often to do this, a pharmacist or doctor can advise based on your ears. Keeping earbuds and hearing aids clean, and not wearing them for unnecessarily long periods, can also help reduce buildup.
Earwax and hearing
A common and reassuring point is that earwax buildup is one of the most frequent causes of temporary, reversible hearing loss — meaning that muffled hearing from wax almost always returns to normal once the blockage is cleared. If you notice your hearing has become muffled on one side, wax is a very common and easily treatable explanation, and it is worth checking before assuming anything more serious.
That said, hearing loss should not simply be assumed to be wax, especially if it comes on suddenly, affects both ears, or does not resolve after the wax is cleared. Sudden hearing loss in particular should be assessed promptly, as it occasionally has other causes that benefit from early treatment. For the everyday, gradual muffling that comes with a blocked ear, though, clearing the wax usually restores hearing fully.