Crusty earrings are covered in dried fluid. Skin that's irritated produces more fluid than usual, and when it dries around a piercing it forms a crust on the post and the back. The usual causes are friction, a back pressed too tightly, moisture trapped against the skin, or the metal itself irritating the channel. Our Polished Surgical Steel collection addresses the last of those.
Read this first
A small amount of crust on a settled piercing is ordinary and usually means minor irritation.
See your pediatrician if there's spreading redness, the ear feels hot, there's swelling, the discharge is colored rather than clear or pale, the pain is getting worse, she has a fever, or a back has become embedded in the lobe.
Those aren't questions about earring materials and nothing below replaces someone looking at it.
Everything else here assumes a settled piercing with a bit of crust and no other symptoms.
What makes earrings crusty
Skin produces fluid when it's irritated. It's a normal response, the same one behind a graze weeping slightly before it dries.
Around a piercing that fluid has nowhere to go. It sits against the post and the lobe, dries in air, and forms a crust. Mixed in with it are shed skin cells and sebum, which are being produced continuously inside the channel anyway.
So crust is a signal rather than a condition. The question worth asking is what's irritating the skin enough to make it produce extra fluid.
The four usual causes
Friction
Anything that makes the earring move inside the channel abrades the lining. A loose back lets the earring shift constantly. A tall setting catches on hair, collars and pillows and tugs the piercing every time.
Friction is also why crust often appears on one ear and not the other. She sleeps on one side.
Pressure from the back
A back pushed on too far compresses the lobe, restricts blood flow and irritates the tissue. It's the most common cause of a whole range of ear complaints and the easiest to fix.
Check for an indentation in the lobe when the earring comes out. If there's a visible dent, the back was too far on. There should be a small gap.
Trapped moisture
The channel doesn't get much airflow. Water from swimming, bathing or showering sits in it, and skin kept damp becomes irritated and produces more fluid.
Flat backs make this worse. The disc creates a small cavity that holds moisture against the back of the lobe all day.
The metal
An earring releases metal ions into skin continuously, and how much depends almost entirely on what it's made of. A metal that releases freely irritates the channel, and irritated skin produces more fluid, which dries into more crust.
Copper releases readily. Nickel is the most common cause of metal allergy by a wide margin. Stable metals like S316L Surgical Steel release very little, which is why that grade is used in medical instruments and implants.
If the crust is worse with certain pairs and clears with others, the metal is the likely answer.
The pattern to look for
Crust with certain earrings only points at the metal.
Crust on one ear only points at mechanics: sleeping position, or one back further on than the other.
Crust that appeared after a change in routine, like a new shampoo or a summer of swimming, points at moisture or products.
Crust that has been there since the piercing was done and never settled is worth showing to whoever performed it.
Crust with heat, spreading redness, swelling or colored discharge is a different situation entirely and needs your pediatrician.
What to do
Take them out for a few days. A settled piercing won't close in that time, and if the crust stops forming you've learned that the earring was the cause.
Soften and remove gently. Warm water on a clean cloth, held against it for a minute, then wipe. Never pick at it dry.
Wash both the earring and the lobe. Warm water and mild soap, front and back, then dry properly.
Don't twist or rotate the earring. It gets suggested a lot. It abrades the channel and pushes material further in, which makes the irritation worse.
Don't over-clean with antiseptic. Occasional is fine, frequent dries the skin and dry irritated skin produces more fluid, not less.
Check the back tension before you blame the metal.
Jewelry on last, off first. Shampoo, conditioner and hairspray all end up on the lobe.
What we do
purepixxi is built around the two causes you can actually control.
On the metal. Two materials, and on one range only one. S316L Surgical Steel, the same grade used in medical instruments and implants, chosen because it resists corrosion and therefore releases very little. And 24K Pure Gold, which is pure 24 karat gold finished onto a solid S316L Surgical Steel core with Aunix™ 24K, our engineered gold finish.
The setting, the post and the butterfly back all carry that same core. The post is the component inside the channel, and it's also the part most commonly bought in from a different supplier and left out of any testing. Ours was tested: eight pairs, setting, post and butterfly, with nickel release not detected under EN 1811.
On the mechanics. The posts carry a double-notch system, so the butterfly seats at a set tension rather than gripping by friction. Firm enough to hold, adjustable enough for a child to manage, and not so tight that it compresses the lobe. The studs are 4mm and 5mm and low-profile, so there's less to catch.
We use butterfly backs rather than flat backs, which leaves the back of the lobe open rather than sealing a cavity against it.
Tested to ASTM F2923 and CPSIA. Report BTO 341803/1. More on our safety promise.
The easiest pair to keep clean is the one with the fewest places for anything to gather, which is why we make the 4mm Flawless Crystal Stud Earrings in Surgical Steel.
Questions parents ask next
Is crust the same as pus? No. Crust is dried clear or pale fluid from irritated skin. Colored, thick or persistent discharge is different and needs a doctor.
Should I pick it off? No. Soften it with warm water and wipe it gently. Picking reopens the irritated skin and restarts the cycle.
Does crust mean the piercing is rejecting? Rejection is rare in lobes and much more common in cartilage. Crust in a settled lobe piercing usually points at irritation rather than rejection.
Why does it come back so quickly? Because the cause is still there. Clearing the crust treats the evidence rather than the irritation producing it.
Can she keep wearing earrings? Almost always, yes. The question is which metal and how the back sits, rather than whether she wears them at all.
Related reading
- Why do her earring holes get crusty?
- What is the white gunk on her earrings?
- Why do her ear piercings keep getting infected?
- Why her ears react to earrings, and what to do about it
About the author. Matt Westmore is the founder of purepixxi. He came to children's jewelry from manufacturing and sourcing rather than marketing, which means he has walked the factory floors and knows what is actually inside a product rather than what a label says about it. purepixxi uses two materials only, names them exactly, and has them independently tested.
