Whether listening to a podcast or making a phone call, many of us spend several hours a day with headphones screwed into our ears. If health recommendations often focus on the dangers of excessively high sound volume, another risk, much more discreet, is still too little mentioned: that of bacteria and infections of the ear canal.
Hearing in danger… but not only
To preserve hearing, the World Health Organization recommends not exceeding 60% of the maximum volume of your device and limiting the duration of exposure to sound. An essential rule to avoid progressive hearing loss.
But beyond noise, headphones, especially in-ear models, can also have an impact on ear health. By obstructing the ear canal, they encourage the accumulation of heat, humidity and impurities, creating a breeding ground for bacterial proliferation.
Waves, sebum and earwax: how does the ear work?
To understand the risks, we must first look at how the ear works. Sound waves are picked up by the pinna, this skin-covered cartilage that directs sounds to the external ear canal, which is a few centimeters long and slightly curved.
In its deep part, the canal produces earwax and sebum (which is completely normal). These substances play a crucial role:
- They moisturize and protect the skin;
- They trap dust, dander and micro-organisms;
- They participate in the ear’s natural self-cleaning process.
Finally, fine cilia also facilitate the evacuation of particles to the outside. Result: a healthy ear has a balanced microbial flora, essential to prevent the establishment of pathogens… in general.
Headphones that disrupt bacterial flora
The problem arises when in-ear devices, like your headphones, are worn for a long time and without maintenance. According to Dr. Gérald Kierzek, emergency physician, headphones can quickly become veritable breeding grounds for bacteria.
“The ear canal is naturally warm and humid. If you add accumulated earwax and dirty ear tips, you create an ideal environment for microbial proliferation.”
Without regular cleaning, silicone tips trap sweat, dead cells and bacteria such as staphylococci, E.coli or even Klebsiella. Some studies even show that these microorganisms can multiply up to 11 times in one hour of use, even on initially sterilized headphones.
Results ? According to a study carried out in 2024, people wearing in-ear devices for a prolonged period have a less diverse microbial flora, and therefore more vulnerable.
What are the concrete risks?
Our expert is clear: the consequences can be more significant than we imagine.
- External otitis : inflammation or infection of the ear canal, with throbbing pain, swelling and sometimes purulent discharge;
- Irritations and eczema : skin reactions linked to silicone or the presence of bacteria;
- Earwax plugs : the tips push earwax inwards, which can cause temporary hearing loss…
In rare cases, complications may be more serious.
“Repeated ear infections can progress to deeper infections such as mastoiditis, particularly in diabetic or immunocompromised people”specifies Dr. Kierzek.
Sharing headphones also increases the risk of transmitting ENT infections or resistant bacteria.
The right actions to protect your ears
Good news: prevention is simple and remains very effective in protecting your precious ears and their canals. Simple gestures are enough.
Clean your headphones regularly
- Silicone tips wash with lukewarm water and antibacterial soap once a week;
- The grids: with a dry soft brush then cotton swab lightly soaked in 70% alcohol;
- Shells and housing: with a daily microfiber cloth.
Certain boxes equipped with a UV system also allow
reduce up to 99.9% of bacteria during charging.
Let your ears breathe
Take breaks 1-2 hours a day to avoid constant humidity.
Avoid sharing your headphones
A trivial gesture but which can promote the transmission of microbes.
Do not use headphones if you have an ear infection or irritation
Heat and humidity can slow healing.
Watch for symptoms
Itching, redness, pain or discharge should prompt you to consult.
Simple hygiene to prevent 90% of infections
For Dr. Kierzek, the message is clear: “Cleaning your headphones is a simple preventive measure that helps avoid the vast majority of infections linked to their use.
A measure that should not fall on deaf ears.