Earrings you
literally never
take out.
literally never
take out.
Gym. Shower. Sleep. They stay in, they stay beautiful. Implant-grade titanium designed with healing and comfort in mind, built from the same grade of titanium trusted in medical implants.
Material grade
ASTM F136
The same titanium used in surgical implants
Skin reaction rate
0%
Nickel-free. Zero irritation. Even for sensitive ears.
Wear time
∞
Sleep in them. Swim in them. Never take them out.
Why Implantium™
Not all flatbacks are equal.
Most "hypoallergenic" jewellery is still coated steel or low-grade alloys. Implantium™ is implant-grade ASTM F136 titanium - the material professional piercers use. No coatings to chip. No nickel hidden inside. No reason to ever take them out.
Loved by 16,000+ customers
★★★★★ What they say
I have had my piercing for years, always been infected and have tried loads of different jewelleries, never worked. These flatbacks are amazing, 8mm works when it is bumpy, gorgeous shiny comfy, just can't ask for more
Brought as a cute set, absolutely love them they are so dainty and great quality. I would highly recommend. All the earrings I’m wearing are from Smoothie London, I get so many compliments about how lovely my earrings are! Very happy with the purchases I made.
I am definitely very happy with my purchase from Smoothie London! The quality of the items I ordered is exceptional, I have worn my earrings a lot recently and they look amazing. I have quite sensitive skin but these earrings don’t give me any problems, are super comfortable and have helped heal my cartilage piercing.
The smart way to stack
Pick your stack.
Our curated stacks take the guesswork out. Every piece is chosen to work together - and every bundle hits the threshold for your free hoops.
The Snooze Stack Bundle Gold
$146.00
3 pieces · All Implantium™ flatbacks
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The Snooze Stack Bundle Silver
$144.00
3 pieces · All Implantium™ flatbacks
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£0.00
6 pieces · Mix of flatbacks & hoops
Product title
£0.00
6 pieces · Mix of flatbacks & hoops
Why cartilage piercings can stay irritated
Maybe the piercing isn't the problem...
But here’s the truth about most studs:
❌ Cartilage has less blood flow than the lobe, meaning it takes longer to feel comfortable.
❌ Certain materials (like mystery alloys or low-grade “surgical steel”) can trigger sensitivity or prolonged redness.
❌ Standard butterfly backs can press, poke, or trap bacteria - especially when sleeping or wearing headphones.
Bundle & Save
The best value. Ear stacks, done properly.
FAQs
Can I actually work out in these? Like… really?
Yes - that’s what they’re made for.
Implantium™ earrings stay locked in through HIIT, long runs, Pilates, heavy lifts even swim sessions. No slipping, no snags, no second thoughts.
Will they poke me when I sleep?
Not at all.
Implantium™ uses a flatback design that sits totally flush against your skin. That means zero stabbing, zero pressure, and side-sleep approved.
I have sensitive ears - will these still work for me?
Implantium™ is an implant-grade titanium alloy - the same type of metal used in medical implants. It’s hypoallergenic, nickel-free, and made for even the most reactive ears.
Will they tarnish or turn green after I sweat?
Never.
Implantium™ is sweatproof, waterproof, and tarnish-resistant. You can train, shower, sauna, and repeat. The metal stays clean and your ears stay happy.
Do I have to take them out to shower or sleep?
Nope. That’s the whole point.
Implantium™ studs are designed for 24/7 wear. Set them and forget them - they’ll keep shining through every workout, nap, and night out.
Are they sold as a pair?
No Implantium™ studs are sold individually (as singles).
This lets you buy exactly what you need - whether you’re stacking, replacing one side, or styling a unique ear setup.