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I started Smoothie because I was tired of buying the earrings I actually wanted, wearing them four times and eventually taking them out with a mysterious green ring around my ear.
Then, naturally, buying another pair and doing the entire thing again.
Six years later, “Why do earrings turn my skin green?” is still one of the questions I’m asked most. So here is the honest answer: what causes it, whether it matters and how to avoid it without resigning yourself to boring jewellery forever.
First: what actually is the green mark?
Usually, it’s copper.
When copper comes into contact with moisture, oxygen, sweat and products such as perfume or moisturiser, it reacts and forms greenish compounds on the surface of the jewellery. These can then transfer onto your skin - the same basic reason old copper roofs and the Statue of Liberty develop their distinctive green colour.
Two reassuring things:
- The green stain itself is normally cosmetic and should wash off with soap and water.
- It isn’t automatically an allergy. A green mark and an itchy, inflamed reaction are two separate things, although it is possible to experience both at once.
Which metals turn your skin green?
Copper
The obvious culprit. Pure copper jewellery can leave green marks surprisingly quickly, particularly in hot weather or anywhere it sits tightly against the skin.
Brass
Brass is an alloy of copper and zinc, and it is commonly used underneath the gold-coloured finish on affordable jewellery.
Because it contains copper, brass can oxidise and transfer a green tint onto the skin - especially once any coating or plating begins to wear.
Bronze
Bronze is another copper-containing alloy, this time usually mixed with tin. It is less common in modern high-street jewellery but appears frequently in vintage and artisan pieces.
Same copper. Same potential green aftermath.
Gold-plated brass
This is where “gold-plated” becomes slightly less useful than it sounds.
Gold plating is a layer of gold applied over another metal. While that surface remains intact, your skin is protected from the metal underneath. But plating naturally wears over time, particularly when exposed to water, sweat, perfume, skincare and friction.
If the base, or an intermediate plating layer, contains copper, green staining can appear as the gold wears.
This is why “gold-plated” alone doesn’t tell you enough. You also need to know what sits underneath it.
Sterling silver
This one surprises people.
Sterling silver is 92.5% silver and 7.5% other metals, most commonly including copper. The copper gives the silver strength because pure silver would be too soft for most everyday jewellery.
That means sterling silver can occasionally leave a green tint, particularly when worn tightly against damp skin. Rings are more likely to do it than earrings because they are exposed to handwashing, skincare and constant contact.
Sterling silver can also tarnish when it reacts with sulphur-containing substances. That usually creates grey or black discolouration rather than green.
It doesn’t make sterling silver bad-quality or unsafe. It simply means that even precious metals need looking after.
What about nickel?
Nickel is often included in articles about green skin, but it usually causes a different problem.
Nickel doesn’t typically create the characteristic green deposit. Instead, nickel ions released from jewellery can trigger allergic contact dermatitis in someone who is sensitive to it.
That reaction might look like:
- Itching
- Redness or changes in skin colour
- Dry or cracked skin
- Blistering
- A rash around the jewellery
Nickel and copper can appear in the same piece of jewellery, which is why green staining and irritation sometimes happen together. But one does not necessarily cause the other.
If your piercing is painful, hot, very swollen, weeping or crusting, don’t assume it must be a nickel allergy. Irritation, pressure, infection, an unsuitable post length and movement can cause similar symptoms. Speak to a reputable piercer, pharmacist or GP if you are concerned.
Can real gold turn your skin green?
Potentially, yes.
Pure 24k gold contains virtually no other metal, but it is too soft for most everyday jewellery. Lower carats - including 9k, 14k and 18k gold - are mixed with other metals to make them stronger.
Depending on the exact alloy, that can include copper. In some conditions, copper-containing gold alloys may leave discolouration on the skin.
Rose gold usually contains more copper than yellow gold at the same carat. The copper is what gives it that pink tone.
So price isn’t a perfect predictor of whether jewellery will mark you. The exact composition matters more.
Why does it happen to some people and not others?
You might wear the same pair of earrings as your friend and end the day with completely different results. You are not imagining it.
How quickly copper reacts can be affected by:
- Sweat chemistry. Its acidity and salt content vary from person to person.
- How much you sweat. More moisture creates more opportunity for the metal to react.
- Heat and humidity. Summer, holidays and workouts can accelerate the process.
- Skincare and beauty products. Perfume, moisturiser, sunscreen and hairspray can collect on jewellery and contribute to tarnishing or plating wear.
- Where the jewellery sits. Rings experience constant friction and handwashing. Necklaces collect sweat and perfume. Earrings are exposed to hair products, skincare and moisture after showering.
- How tightly it fits. Close contact traps moisture and reduces airflow.
It isn’t that your skin is “bad” or unusually difficult. It is simply a chemical reaction happening under a particular set of conditions.
How to stop jewellery turning your skin green
If you already own a piece you love, you can slow the reaction down.
Keep it away from water
Remove non-waterproof jewellery before showering, swimming, exercising or washing up. Water, sweat, chlorine and salt can accelerate tarnishing and wear down plating.
Apply perfume and skincare first
Let creams, sunscreen, makeup, perfume and hairspray dry before putting your jewellery on.
Wipe it after wearing
Use a clean, dry, soft cloth to remove sweat, oils and product residue before storing it.
Store it somewhere dry
A jewellery box or pouch is much better than an open dish in a steamy bathroom.
Be careful with clear nail varnish
You’ll often see people recommend painting the inside of a ring with clear nail varnish. It can create a temporary barrier, but it chips quickly and nail products can cause contact dermatitis themselves.
Never use nail varnish or another DIY coating on jewellery that passes through a piercing.
Ultimately, these tricks buy time. They cannot remove copper from an alloy or permanently restore worn plating.
Which metals won't turn skin green?
Implant-grade titanium
ASTM F136 titanium is a titanium alloy made primarily from titanium, aluminium and vanadium. Copper and nickel are not intentional alloying ingredients.
It is highly corrosion-resistant, lightweight and widely used by professional piercers, particularly for healing or sensitive piercings. ASTM F136 is one of several recognised implant-material standards, but it is the one we use for Smoothie’s cartilage jewellery.
Stainless steel
Suitable stainless-steel grades are also highly resistant to corrosion and usually release very little nickel, despite some grades containing nickel within the alloy.
However, “stainless steel” alone doesn’t guarantee that a finished piece meets the relevant nickel-release limits. The particular grade, surface finish, plating layers and manufacturing quality all matter.
All our fashion jewellery including hoops, rings and necklaces are made of stainless steel for this reason.
Niobium and carefully specified precious-metal alloys
Niobium and appropriately specified platinum, palladium and high-purity gold alloys can also be good options. As always, check the precise composition rather than relying on a vague description such as “gold tone” or “premium metal.”
If it goes through a piercing, be more particular
Fresh and healing piercings need different treatment from jewellery simply resting on intact skin.
While a piercing heals, its protective skin barrier is still forming. Movement, friction, pressure and unsuitable jewellery can all cause irritation or delay healing. Once healed, the piercing channel is lined with skin, but it can still be sensitive to poorly finished surfaces and metals that release allergens.
This is why professional piercers commonly recommend verified implant-grade titanium, including ASTM F136 titanium.
Smoothie’s titanium cartilage earrings are made from ASTM F136 implant-grade titanium and are designed to be waterproof. They include flatbacks, hoops and clickers made for the places you want to put jewellery in and then largely forget about.
Shop waterproof titanium cartilage earrings →
Quick answers
Is green skin from jewellery dangerous?
The green mark itself is usually a harmless cosmetic stain caused by copper compounds transferring onto the skin. It should wash away with soap and warm water.
If you also have itching, pain, swelling, blistering or a persistent rash, that may be irritation or contact dermatitis rather than simple staining.
Does sterling silver turn your skin green?
It can. Sterling silver is 92.5% silver, while the remaining 7.5% commonly includes copper. Green staining is more likely on rings and other pieces exposed to moisture and close contact.
Does gold-plated jewellery turn skin green?
It depends on the metals underneath the gold. If the base or an intermediate plating layer contains copper, green staining may appear as the plating wears.
Does real gold turn skin green?
Some solid-gold alloys can contain copper. Lower-carat and rose-gold alloys are more likely to contain meaningful amounts, although staining varies according to the precise alloy and wearing conditions.
How do I remove green marks from my skin?
Wash the area with soap and warm water. Most marks lift immediately, while a faint residual tint should fade naturally.
How can I tell what jewellery is actually made from?
Look for a precise material description: “925 sterling silver,” “ASTM F136 titanium” or a clearly identified grade of stainless steel.
Descriptions such as “gold tone,” “gold effect” or “premium metal” tell you very little. If the base metal isn’t disclosed, ask.
The short version
Green skin usually means copper somewhere in the jewellery has reacted with moisture, sweat or products on your skin.
It doesn’t necessarily mean you’re allergic, and it doesn’t automatically mean the jewellery is fake. But it does tell you something about the metal underneath the finish.
That’s why Smoothie jewellery is made from stainless steel and ASTM F136 titanium rather than brass. Both are waterproof and designed for showering, sleeping, swimming, working out and everything else you’re doing while wearing them.
Because buying jewellery should involve choosing the fun bit—not conducting a forensic investigation into what “gold tone” was supposed to mean.
— Georgia, founder of Smoothie London