What Is Ear Wax, Really? The Science Behind Cerumen and What Modern Clinics Recommend

Ear wax has a bit of a PR problem. Most of us have grown up treating it as something faintly embarrassing, a thing to scrub away in the shower, or to fish out with a cotton bud the moment we notice it. The truth is rather different. Cerumen, to give it its proper name, is one of those quiet biological systems that only gets noticed when it stops working. The rest of the time, it’s keeping your ears healthier than you realise.

If you’ve ever wondered what the gunk in your ears actually is, why some people seem to make far more than others, and what the current best advice is for dealing with it, this is the article for you.

What ear wax is actually made of

Cerumen is produced in the outer third of the ear canal, the part closer to the world, not the part deep inside. Two types of glands are responsible. Sebaceous glands add an oily component, the same kind of substance that lubricates your skin elsewhere. Ceruminous glands, which are modified sweat glands found only in the ear, contribute a more watery secretion. Mix that with shed skin cells from the canal lining, and you’ve got ear wax.

The result is a mildly acidic, slightly sticky substance with a few notable properties:

  • It physically traps dust, pollen, dead skin and small debris before they reach the eardrum.
  • It contains fatty acids and lysozymes that have antibacterial and antifungal effects.
  • It repels water, helping keep the canal dry.
  • It moisturises the delicate skin of the ear canal so it doesn’t crack and itch.

In other words, it’s a biological barrier system, not waste material.

Why your ears might be wet, dry, or somewhere in between

Here’s a genuinely interesting bit of biology. The kind of ear wax you produce is mostly written into your DNA, specifically into a gene called ABCC11. People with one version of the gene tend to have wet ear wax that’s sticky, brownish-yellow, sometimes a little tan in colour. People with another version produce dry ear wax that’s flaky, lighter, almost grey or pale yellow. There’s a strong geographic pattern: dry-type wax is most common in people of East Asian descent, while wet-type predominates in people of African and European descent.

There’s no “better” version. Both serve the same protective purpose. But it does mean that when you compare what’s coming out of your ear with what your friend describes, don’t be surprised if it looks completely different. That’s normal.

How ears clean themselves (when they’re allowed to)

Your ear canal is one of the few parts of the body that has its own self-cleaning conveyor belt. The skin lining the canal slowly grows outwards from the eardrum towards the opening, taking old wax, dust and dead skin with it. Every time you talk, chew, or yawn, tiny movements of the jaw help nudge the whole layer along.

For most people, most of the time, this works perfectly. The wax breaks off in tiny flakes near the canal entrance and either falls out unnoticed or gets washed away when you shower. You’ll never need to “clean” your ears in any active sense.

When the system breaks down

Wax becomes a problem when it accumulates faster than the body clears it, or when the natural migration is disrupted. There are a few common reasons this happens:

  • Age. Cerumen production tends to drop in older adults, but what’s produced becomes drier and harder. The skin migration also slows down.
  • Narrow or hairy ear canals. Some people are born with naturally narrow canals; others develop coarser ear canal hair with age. Either makes it harder for wax to find its way out.
  • Hearing aids and in-ear headphones. Both physically block the canal and can stimulate gland activity. They’re one of the most common reasons audiologists see recurrent impaction.
  • Cotton buds and home cleaning. Almost every clinician will tell you the same thing: cotton buds remove a small amount of wax from the entrance while pushing the rest deeper, where it then gets compacted against the eardrum.
  • Skin conditions like eczema or psoriasis affecting the ear canal can change how wax behaves.
  • Previous ear surgery, particularly mastoid procedures, which alter the canal’s normal anatomy.

If any of these apply to you, regular check-ups make sense. Wax build-up is far easier to deal with before it becomes a properly impacted blockage.

What current guidance actually says

The picture in the UK has changed quite a bit over the last decade. Routine ear syringing in GP surgeries has largely disappeared, not because syringing itself is dangerous, but because of training, funding and clinical risk considerations. NICE guidelines now recommend that ear wax should only be removed when it’s actually causing symptoms (like hearing loss, discomfort, or tinnitus) or when it’s preventing examination of the eardrum. Cleaning out healthy, asymptomatic wax serves no purpose and can do harm.

When removal is warranted, current guidance favours microsuction as the safest and most controlled method, particularly for anyone with a history of ear problems, perforations, or surgery. Electronic irrigation is still appropriate in many cases, generally after softening with olive oil or a similar product for several days. Manual extraction with fine instruments has its place too, often used alongside microsuction.

The take-home: there’s no single “best” method, but there is a sensible one for each person, decided after a clinician has actually looked into your ear.

The DIY problem

Walk into any pharmacy and you’ll find an aisle of ear cleaning products. Kits with bulb syringes, hooks, picks, lights, even tiny cameras you can connect to your phone. They look reassuring. They’re sold legally. And they cause a steady stream of avoidable injuries.

The issue isn’t necessarily the tool itself. It’s that you can’t see what you’re doing well enough to be safe, even with a camera. The ear canal isn’t straight; it bends. The eardrum is shockingly thin. And once something has gone wrong, whether that’s a scratch, a perforation, or an infection, recovery takes weeks and the ear may not be quite the same afterwards.

It’s frustrating advice to give in 2026, when so much can be done at home, but ear care really does sit in the category of “leave it to someone trained.”

Where to go from here

If your ears feel blocked, your hearing has changed, you’ve got tinnitus or a sensation of fullness, the sensible next step is a professional examination. At Abeer’s Ear Health Clinic in Birmingham, every appointment starts with a thorough look at the ear canal, so we can decide whether removal is even needed and, if it is, which method suits you best.

Most appointments are wrapped up in under half an hour. Same-day slots are usually available. Call us on 07833 005051 or drop a line to hello@abeersearhealthclinic.co.uk.

Your ears have been quietly doing their job your entire life. A bit of expert attention now and then is a fair return.