Why Ear Wax Suddenly Blocks Your Ear: 9 Things Most People Never Learn

Most people think of ear wax as dirt that needs cleaning out. It isn’t. Your ears look after themselves remarkably well, and most blockages happen because something has interrupted that natural process. Below are nine things our clinicians explain every week at our ear wax removal clinics on the Gold Coast. Most people never learn them, and knowing them changes how you care for your ears for life.

1. Your ear canal cleans itself on a slow conveyor belt

The skin lining your ear canal does something unusual. Instead of shedding in place like the skin on your arm, it grows outward from the eardrum toward the opening of the ear, very slowly, a tiny fraction of a millimetre each day. Ear wax sits on top of this moving layer and is carried out with it. Jaw movement from talking and chewing helps it along.

This is why most people never need to clean inside their ears at all. Wiping the outer ear with a washer after a shower is enough. The canal takes care of the rest.

2. Wax is only made in the outer third of the canal

The glands that produce ear wax sit in the outer, cartilage part of the ear canal, roughly the first third. The deeper, bony part near the eardrum doesn’t make wax. So when wax is found packed deep against the eardrum, it usually didn’t start there. In most cases it has been pushed in, by cotton buds, hairpins, fingers or earbuds.

Cotton buds are the most common culprit. They remove a little wax from the surface and push the rest deeper, where the conveyor belt can’t carry it back out. Over time it compacts into a hard plug.

3. A blockage builds slowly, then feels sudden

People often tell us their ear “blocked overnight”. The wax usually took weeks or months to build up. Your hearing stays close to normal while even a small gap remains for sound to pass through, so you don’t notice it. Then something closes that last gap. Very often it is water from a shower, swim or surf, which softens and swells the wax until it seals the canal.

That is why a muffled ear after swimming is so common on the Gold Coast. If the feeling doesn’t clear within a day or so, wax is a likely cause and worth having checked.

4. Earbuds and hearing aids interrupt the conveyor belt

Anything that sits in the ear canal for hours each day, such as earbuds, hearing aids or sleep earplugs, gets in the way of wax moving out. It can also stimulate the glands to produce a little more. Regular users tend to build up wax faster than other people.

For hearing aid wearers this matters twice over. Wax blocks the tiny speaker and wax guard, and a hearing aid that suddenly sounds weak or dead is often blocked with wax rather than faulty. Having your ears checked every six to twelve months, and changing wax guards regularly, avoids a lot of unnecessary hearing aid repairs.

5. Your genes decide what type of wax you have

There are two main types of ear wax: wet, which is sticky and honey to brown in colour, and dry, which is pale and flaky. Which one you have is mostly decided by a single gene, ABCC11, which you inherit from your parents. Dry wax is much more common in people of East Asian ancestry, while wet wax is more common in people of European and African ancestry.

Neither type is a sign of good or poor hygiene. Both are normal, and both can occasionally build up and need removing.

6. Ear wax protects your ears, so over-cleaning backfires

Ear wax is mildly acidic, water repellent and contains natural antibacterial substances. It traps dust, keeps the delicate skin of the canal moisturised and helps keep water out. Removing it too often leaves the canal dry, itchy and more prone to infections such as swimmer’s ear. The itch then tempts people to scratch with cotton buds, which starts the cycle again.

For more on how wax is made, read our guide on how ear wax forms.

7. Ear drops soften wax, but they don’t remove it

Softening drops, including plain olive oil, can help small amounts of wax work their way out, and using them for a few days before an appointment can make removal easier. They are not a cure for a firm blockage, though. Sometimes drops make a blocked ear feel temporarily worse, because the wax absorbs fluid and swells before it breaks down.

Don’t put anything in your ear if you have ear pain, discharge, a known perforated eardrum, grommets, or have had ear surgery, unless your doctor has told you to.

8. Not every removal method suits every ear

There are three main professional methods, and the right one depends on your ear:

• Irrigation (syringing): water is flushed into the canal to wash the wax out. It isn’t suitable if you have a perforated eardrum, grommets, previous ear surgery or a current ear infection.
• Manual removal: small instruments are used to lift the wax out under direct vision. It works well for wax near the opening of the canal.
• Microsuction: a fine suction tube removes the wax while the clinician looks into the ear under magnification. It is dry, so no water goes into the ear, and the clinician can see the canal and eardrum the whole time. This makes it suitable for many people who can’t have irrigation.

Microsuction can be noisy, and some people briefly feel a little dizzy or cough during the procedure. These reactions are normal and pass quickly. We explain them in 5 earwax removal reflexes explained.

9. Sudden hearing loss isn’t always wax, so know the warning signs

Wax is the most common cause of a blocked ear, but it isn’t the only one. Sudden hearing loss in one ear, particularly with ringing or dizziness and without the usual blocked feeling, can be a sign of a problem in the inner ear. This needs medical attention the same day, because early treatment can make a difference. See your GP or go to an emergency department straight away.

Also see a doctor if you have ear pain, discharge, a fever, or dizziness that doesn’t settle. And avoid ear candling. There is no evidence it removes wax, and health authorities have warned about burns and other injuries from it.

How to look after your ears

• Leave the inside of the canal alone. Clean only the outer ear.
• Skip cotton buds, hairpins and keys.
• If you wear earbuds or hearing aids daily, give your ears regular breaks and keep the devices clean.
• Dry your ears gently after swimming, and consider custom swim plugs if you surf or swim often.
• If you’re prone to build-up, have your ears checked every six to twelve months.

Microsuction ear wax removal on the Gold Coast

Simply Hearing offers microsuction ear wax removal at our Broadbeach, Pimpama and Hope Island clinics, Monday to Friday, 9am to 5pm. No GP referral is needed, and we see adults and children aged 8 and over. For some pensioners and DVA Gold Card holders we may be able to waive the fee, and we’ll talk it through with you before your appointment.

Learn more about microsuction ear wax removal or call 0422 388 005 to book.

Frequently asked questions

Why does my ear feel blocked after a shower or swim?

Wax that has built up slowly can absorb water and swell, closing the last gap in the ear canal. If the blocked feeling doesn’t clear within a day or so, have your ears checked.

Should I clean my ears with cotton buds?

No. Cotton buds push most of the wax deeper, where the ear’s natural cleaning can’t move it out. Clean only the outer ear with a washer.

Is microsuction better than syringing?

Microsuction is dry and done under magnification, so the clinician can see the ear canal and eardrum throughout. It suits many people who can’t have syringing, including people with a perforated eardrum, grommets or previous ear surgery. The best method depends on your ear, and we’ll check before we start.

How often should ear wax be removed?

Many people never need it. People who wear hearing aids or earbuds daily, or who naturally make more wax, often benefit from a check every six to twelve months.

When is a blocked ear an emergency?

Sudden hearing loss in one ear, especially with ringing or dizziness, should be seen by a doctor the same day. See your GP for ear pain, discharge or fever too.

This article is general information and not a substitute for advice about your own health. If you’re worried about your ears or hearing, speak with your GP or book an appointment with our team.