Better under-eyes in 10 minutes.
Cold hydrogel loaded with adenosine — the Korea-approved wrinkle ingredient almost no American eye patch bothers to use.
Cold-Activated Hydrogel · Adenosine + PDRN
Kera Cold Eye Patches
De-puff, brighten and wake up tired-looking eyes in ten minutes. 60 count per jar.
Ten minutes apart. Same light, no makeup change.
ⓘ Product Description
Cold hydrogel eye patches, 60 count per jar. The jar lives in your fridge. Lift a pair with the spatula, press one under each eye, leave them ten to twenty minutes, peel off and pat in what’s left. Five actives inside: adenosine, PDRN, hydrolysed collagen, niacinamide and hyaluronic acid. Adenosine is the hero — Korea lists it as a functional ingredient for wrinkle improvement, and it’s what’s working on fine lines while the cold takes the puffiness down. Hydrogel grips where you put it — no sliding, no rinsing, makeup goes straight over the top.
🧬 Why adenosine
Nearly every eye patch sold here leads with caffeine. Caffeine shrinks puffiness for a few hours and does nothing for lines. Adenosine is a molecule your own cells already run on. In a placebo-controlled trial of 126 women aged 45–65, it produced a measured reduction in crow’s feet from week three. Korea approved it as a functional ingredient for wrinkle improvement. No sting, no peeling, no build-up period — unlike retinol.
🎁 The free gift set
Order 2 jars or more and we include a cold face roller and a gua sha stone, free. Keep them in the fridge beside the jar. Use them after you peel the patches off, or on days you skip the patches entirely. Included automatically — nothing to add to your cart.
❓ Quick Questions
How fast? Ten minutes. Cold works on contact, not over six weeks.
Why the fridge? Cold tightens the vessels under your eye so less fluid leaks into the tissue. Room temperature and it’s just a hydrating patch.
Can I sleep in them? No. Past twenty-five minutes most people end up drier than they started.
How long does a jar last? 60 count — about a month at a pair every morning.
🚚 Shipping, Returns & Guarantee
Free US shipping with tracking on every order. If you don’t love how your eyes look, email hello@livekera.com any time inside 60 days for a full refund — no return shipping, no forms, and you keep the jar.
What it does
Cold on. Ten minutes. Eyes that look awake.
Cold tightens the vessels under your eye, so less fluid leaks into the tissue. The bags flatten out, the skin sits smooth, and the shadow they were casting goes with them.
Niacinamide is the most tested brightening ingredient there is. It sits here with collagen and hyaluronic acid, sealed against your skin by a hydrogel that can’t dry out the way a cream does.
This is adenosine’s job. It switches on receptors in the deeper layer of your skin that turn up collagen production — and in a placebo-controlled trial of 126 women, crow’s feet measurably softened from week three.
Bad sleep. Salt. Wine. Allergies. Crying. A long flight. Anything that shows up under your eyes the next morning is what these are in the fridge for.
The hero ingredient
Adenosine. The one nobody told you about.
Every eye patch on the shelf leads with caffeine. Caffeine takes the puffiness down for a few hours, then it's gone.
Adenosine is the one your skin actually builds with. Your body already makes it — it's the molecule your cells run on. Korea approved it as a functional ingredient for wrinkle improvement. It's in nearly every Korean eye patch and almost no American one.
Kera patches carry adenosine alongside PDRN, hydrolysed collagen, niacinamide and hyaluronic acid. Cosmetic claims only — these are eye patches, not a medicine, and they are not intended to diagnose, treat or cure anything.
Cold takes the puffiness down this morning. Adenosine works on the lines from here.
Get Mine — Buy 2, Get 1 Free $22.67 a jar · free roller & gua sha set · 60-day guarantee“I put them on while the coffee brews and take them off after I’m dressed. It requires basically zero extra time.”
The cold roller & gua sha set — yours free.
Take 2 jars or more and the set comes with it. Keep them in the fridge next to the jar and use them after you peel the patches off.
New information
Four things the eye-patch aisle isn’t telling you.
Most of this shelf says the same three words at you. De-puff. Brighten. Hydrate. Here is what the research actually found — including the parts that don’t flatter us.
Sleep is not the reason.
Researchers kept 181 people awake all night, then measured their under-eyes. Nothing changed. Not one shade darker than after a full night.
But when 63 other people looked at the photos, the under-eye was the first thing they used to decide someone looked wiped out.
People really do read your eyes. It just isn’t last night doing it — which is why an early night doesn’t fix this, and ten cold minutes can.
Cold doesn’t drain it. Cold stops it.
Every cold product says it “boosts drainage.” That’s backwards. Your drain system runs on tiny muscle squeezes — and cold slows those down.
What cold really does is tighten the blood vessels under your eye, so less fluid leaks out in the first place.
It isn’t emptying the puddle. It’s closing the tap. Which is why the patch has to be properly cold.
There’s a pocket under your eye. It fills at night.
The skin under your eye is about half a millimetre thick — three times thinner than the skin beside your nose, with no fat under it to cushion anything.
Under that thin skin sits a gap. Anatomy books call it a “potential space” — loose tissue with room for fluid to sit.
That’s why it happens here and not on your cheek. Everywhere else, fluid has somewhere to go.
Twenty minutes. Longer makes it worse.
A 2024 study tested how long people wear masks. Under 25 minutes, skin looked better. Over 25 minutes it flipped — more than half ended up drier than when they started.
So don’t sleep in them, and ignore anyone selling you an overnight version.
Ten to twenty minutes is the window. About the time it takes to drink a coffee.
What’s in it, and what each one is for
Four actives. Plain English.
Niacinamide
Your skin makes colour in one cell, then hands it to the next one. Niacinamide gets in the way of that handoff — lab tests measured it blocking 35 to 68% of it.
It doesn’t bleach anything. And it’s reversible: stop using it and your skin goes back in about three days. That’s the honest reason it pays to keep going.
Hyaluronic acid
Scientists measured real skin after people used it. One use: 8 times more still in the skin a day later. After seven days: 31 times more.
It builds up instead of washing off. That’s why week two looks different from day one.
PDRN
Salmon DNA, cut into small pieces. It’s the ingredient Korean skin clinics built their name on.
Straight answer: the strong proof comes from injections, not patches. We use it because it’s the best modern active out there — not because a patch does what a needle does.
Hydrolysed collagen
Here’s what nobody says out loud: collagen in a jar does not turn into collagen in your face. The molecule is far too big to get through your skin. That’s been known since 2000.
What it does do is hold water on the surface, so skin looks and feels smoother straight away. That’s it. That’s all we’ll claim for it.
The part nobody tells you
“Under-eye puffiness isn’t a cream problem. It’s a fluid problem.”
She’s right — and it’s why a patch beats a cream here.
A cream’s biggest enemy is the air. You put it on, it dries off, and whatever was in it never gets long enough against your skin to matter.
A seal doesn’t have that problem. Sealed skin holds up to 50% more water, and what you put under it stays put for hours instead of minutes.
Cold to stop the fluid. A seal to hold it in place. And a hard twenty-minute limit, because past that you’re working against yourself.
Ten minutes, same morning
Real customers. Real phone cameras.
Every one of those is a single pair, straight out of the fridge. Yours is ten minutes away.
I’ve Seen Enough — Pick My Jars Love your eyes in 10 minutes or keep the jar · free US shippingReal customers
Ten minutes, wherever you are.
What people actually notice
The reviews all say a version of the same thing.
“Late dinner? Puffy. Wine? Puffy. Allergies? Puffy. Bad sleep? Puffy. These stay in my fridge for all of the above.”
“The first time I used them I kept checking the mirror because my eyes just looked more open.”
“I was so sick of hearing ‘you look tired.’ Yes, thank you, I own a mirror.”
“I keep the jar in the fridge right next to my coffee creamer now. Coffee on, patches on, then I start getting ready.”
“The surprise benefit is my concealer. I’m using less because I’m not trying to cover puffy, dry skin underneath it.”
“I bought these because I kept hearing about PDRN. I repurchased because I like what my eyes look like after I take them off.”
“I have one of those faces where one bad night looks like a three-day bender. These help take the drama down.”
“I honestly can’t tell you which ingredient is doing what. I just know my under eyes look hydrated, smoother, and less exhausted afterward.”
“My eyes looked less heavy after I took them off. That’s exactly what I wanted.”
What separates these from the jar you already tried.
Take three jars and each one works out to $22.67 — less than a single 60-count jar sells for almost anywhere else, and the roller and gua sha set comes with it.
The ritual
Five steps. The first one is the one that matters.
Questions we actually get.
How fast will I see something?
Ten minutes. That’s the whole point of cold — it works on contact, not over six weeks. Put a cold pair on, drink your coffee, take them off and look in the mirror.
What is adenosine, and why does it matter?
It’s a molecule your own cells already run on — you make it yourself. In skincare it works on lines rather than puffiness. Korea lists it as a functional ingredient for wrinkle improvement, and in a placebo-controlled trial of 126 women aged 45–65 it produced a measured reduction in crow’s feet from week three, scanned in 3D rather than judged by eye. Almost every eye patch sold here leads with caffeine instead, which takes puffiness down for a few hours and does nothing for lines.
How is this different from retinol?
Retinol works, but it stings, peels and needs months of building up before your skin stops fighting it — and around the eye that’s the last place you want irritation. Adenosine is something your body already makes, so there’s no sting, no flaking and no break-in period. You can use it every day from day one.
Will these help my dark circles?
A lot of under-eye darkness is puffiness and fluid. The swelling casts a shadow, and the skin there is thin enough to show what’s underneath. Cold takes that down, which is why the area looks brighter and more open straight after. The niacinamide works on the look of tone over time. What you’ll notice first is the ten-minute change.
Why do they need to go in the fridge?
Cold tightens the blood vessels under your eye, so less fluid leaks into the tissue. A room-temperature patch is just a hydrating patch. Cold is the mechanism, so the fridge isn’t a suggestion — it’s the instruction.
Can I sleep in them?
No, and we’d rather say so. A 2024 study found that past 25 minutes it flips — most people ended up drier than when they started. Ten to twenty minutes, then take them off.
Do they slide down my face?
These are hydrogel, not paper sheets — hydrogel grips where you press it. If they do move, they went on too wet. Let the extra serum drip back into the jar first.
Morning or night?
Either. Most people notice the biggest difference in the morning, because that’s when fluid has had all night to settle into that pocket. At night they work as the hydration step before bed.
How long does one jar last?
60 count — about a month if you use a pair every morning, longer if you use them a few times a week.
What if it doesn’t work for me?
You’ll know in ten minutes, not ten weeks. If you don’t love how your eyes look, email us any time inside 60 days for a full refund. No return shipping, no forms, and you keep the jar.
Pick your jars.
2 jars or more includes the free roller & gua sha set.
🛡️ Love your eyes in 10 minutes, or keep the jar.
Full refund inside 60 days. No returns, no forms.