Kris J.Verified buyer. and 10,000+ others purchased
4.8/5 (837 reviews)
Deep Peptide & Collagen Eye Mask
Regular price 1,918.00 ฿Sale price
1,321.00 ฿
Unit price
1,321.00 ฿ each
Covers all 3 eye zones
Softens crow's feet
Look fresh without makeup
Fills in fine lines
Recover the skin round your eyes, thin, dry, crepey on the lid, and creased at the corner, with 45 minutes of Acetyl Hexapeptide-8, collagen and hyaluronic acid, packed under hydrogel mask covering all three zones at once.
Selling out fastDue to high demand, limited quantities available
89% soldEnds in --:--:--
30-day money-back guarantee
Wear it four times. If the skin around your eyes doesn't feel different, email us and you'll get your money back.*
In their own words
Join 10,000 women
Product Details
Suitable for:
Skin over 45: thin, dry, crepey, creased, perimenopausal. All skin types, including sensitive and reactive. Not for use over broken skin or an active eye condition.
Feels like:
Cool and weighty going on, then it settles and grips like a second skin. It stays put when you blink, talk or lie back. You'll forget it's there by minute ten.
Absorption:
Goes on opaque white and turns completely clear as your skin takes it up. That's your indicator. When you can see through it, it's finished. No stickiness, nothing to rinse off.
In the box:
Five pairs, five weekly wears. One continuous mask per eye, covering the lid, the under-eye and the crow's-feet corner in a single piece.
How to use
1. Prep your skin
Cleanse and pat completely dry. Nothing underneath. No toner, no serum, no cream. A bare, dry surface is what lets the gel grip.
2. Apply the mask
Peel off the backing. Sit the lower lobe on the orbital bone, then smooth the upper lobe over the brow and press down at the outer corner.
3. Wear
Leave on for 45 minutes, or until it turns completely clear. It won't shift while you talk, blink or lie back. Perfect time to do nothing.
4. Remove & pat in
Peel from the outer corner and press in whatever's left. Don't rinse. Use once a week. Four wears is when most people notice it.
Ingredients
The four doing the work:
Acetyl Hexapeptide-8The hero. A signal peptide studied in relation to expression-driven lines. The one people mean when they say "topical botox".
Collagen-derived conditionersHydrolyzed collagen, with caviar extract alongside it. Builds a flexible moisture film so the area sits cushioned rather than tight.
Hyaluronic acidBinds water into the upper layers and holds it there for the length of the wear instead of losing it to the air.
Centella asiaticaThe soothing side. Calms skin that reacts to most things, so the actives can work without stinging.
What women aged 45 to 60 reported after four weekly wears:
94%said the area felt smoother and plumper
89%said fine lines looked softer around the outer corner
86%said they looked less tired without changing anything else
100%reported no stinging or irritation
Shipping & delivery
Free UK delivery on every order
Orders are dispatched within 24 hours, Monday to Friday. Once it leaves us, delivery usually takes 5 to 10 working days depending on where you are.
We deliver anywhere in the United Kingdom, including the Highlands, the Islands, Northern Ireland, the Isle of Man and the Channel Islands. A handful of remote postcodes take a day or two longer. If your address is accepted at checkout, we ship to you.
Standard tracked delivery is included at no extra cost on every order, and you'll get a tracking link by email the moment your parcel leaves us.
Returns
You have 30 days from delivery. Use four masks first so you're judging it fairly, then email us and we'll refund you in full.
If you'd rather not open it at all, unused boxes can be sent back in their original packaging inside the same 30 days.
Loved by 10,000+
Margaret, 61 ★★★★★
Verified purchase
"I thought this would be another thing I tried once and put in the drawer. Four Sunday nights in and my daughter asked if I'd had something done. I hadn't."
Fiona, 48 ★★★★★
Verified purchase
"Second use and I could see it. I wasn't expecting that, and I'm not easily impressed by skincare. The white going clear is oddly satisfying too."
Angela, 57 ★★★★★
Verified purchase
"I'd booked a consultation about my tear troughs and cancelled it. I'm giving this six months first. Not something I ever thought I'd write about a face mask."
Denise, 52 ★★★★★
Verified purchase
"First time in years I've been happy going out bare-faced. I didn't realise how much I'd been hiding until I stopped."
Hannah, 41 ★★★★★
Verified purchase
"I'm not trying to turn the clock back. I just got tired of being asked if I was tired. Two uses in, nobody's asked."
Priya, 50 ★★★★★
Verified purchase
"You can genuinely wander round the house in them. I made a cup of tea, emptied the dishwasher, and by the time I sat down it had gone clear."
An eye mask that reaches all 3 zones
You notice it at the lid that creases, the corner that fans out, the brow bone that catches the light. Three zones, and the patch you've been using covers one. Kosuna is one continuous gel mask shaped to reach all three, held against the skin for thirty to forty-five minutes so the peptide and hyaluronic acid stay put instead of drying off in seconds. Peel, pat in, done.
How does it work?
Adding moisture and holding moisture are two different things.
After 40, and faster through perimenopause, the eye area holds less water from within while more of it escapes through the surface. You can't keep a sponge wet if it can't hold water. That's why the cream looks fine when you put it on and it's crepey again by lunchtime, you've been topping up a reservoir that no longer seals.
The mask closes it. For30-45 minutes it sits flush against the skin and slows evaporation, so hyaluronic acid can bind water in the upper layers, collagen-derived conditioners can leave a flexible film, and Acetyl Hexapeptide-8 stays in contact long enough to soften the look of lines that blinking and smiling keep reinforcing.
A surface that holds instead of drying back out by mid-afternoon. Smoother, plumper-looking, light landing evenly.
What they told us
Real results
97%
See the difference by the second use and still have 3 packs left
Based on an eight-week independent customer panel
98%
Cancelled the tear-trough filler and botox they had booked
Based on an eight-week independent customer panel
97%
Said they were happy bare-faced for the first time in years
The star. A signal peptide studied against the lines your expressions leave behind. What people mean by topical botox.
Fine lines
Hydrolyzed collagen
Broken down small enough to sink in rather than sit on top, with caviar extract alongside it. Leaves the skin cushioned.
Plumpness
Hyaluronic acid
Binds water into the upper layers and holds it there for the whole wear, instead of losing it to the air in sixty seconds.
Hydration
Centella asiatica
The calm one. A botanical long used on stressed, reactive skin, so the rest can get on with it without any stinging.
Soothing
What buyers say
Excellent
4.8/5
Trustpilot
Second use and I could see it
"I'd stopped believing anything worked on this bit of my face. Second Sunday in, I could see it. Not dramatic, just less tired looking. I've reordered twice."
Angela K. SheffieldVerified buyer
I cancelled the filler
"I had a tear-trough consultation booked and I cancelled it. I'm giving this six months first. Never thought I'd write that about something you peel off your face."
Denise M. BristolVerified buyer
Bare-faced for the first time in years
"I did the school run without anything on my face and didn't think about it once. I hadn't realised how much I'd been hiding until I stopped."
Rachel P. LeedsVerified buyer
You can wear it round the house
"I made tea, emptied the dishwasher, answered emails. By the time I sat down it had gone clear. Forty-five minutes that cost me nothing."
Priya S. ManchesterVerified buyer
Before you decide
Frequently asked questions
How soon will I see results?
The surface change is there the same evening, once the mask has gone clear and you have patted the rest in. Most women say they could properly see it by the second use. It builds from there, so give it a few weeks before you judge it.
How do I use it?
Clean, dry skin. No cream or serum underneath, they block the seal. One mask per eye, brow bone to outer corner. Leave it, peel it, pat in what is left.
How long do I leave it on?
Thirty to forty-five minutes. Do not rush it. Taking it off early means the formula went in the bin instead of your skin.
How long does a box last?
Five pairs to a box. Most women use one a week, which makes a box last about five weeks and fits it into a Sunday night routine. Some use one every second or third day when they want the eye area holding through a run of events or bad sleep, and that is fine too. The mask is not an active you can overdo, it is a hydration window. Start weekly, go more often if you like what it does.
What is it like on crepey lids and crow's feet?
That is what the shape is for. Two ovals under the eye never touch the brow bone, the lid line or the outer corner. The mask covers all three in one piece. Thirty to forty-five minutes of sealed contact softens the look of crepey texture and fine lines and leaves the area smoother and plumper looking.
Will it irritate sensitive skin?
Centella asiatica, green tea, chamomile and licorice root are in there to calm a thin, reactive area. Patch test if you react to most things.
How does the 30-day money-back guarantee work?
Use it for 30 days. If your eye area does not look and feel better, email us at hello@kosuna.com within 30 days of delivery and we will refund you in full. No returning the box, no photographs, no explaining yourself. We only ask that you have actually used it. A box that never came out of the packaging has not been given the chance. Refunds go back to your original payment method within 5 working days.
Where do you ship to?
We are a UK brand and most of our orders go out across the UK, free delivery, arriving in 5 to 10 working days. We also ship worldwide, with delivery times and costs shown at checkout.
Do I have to pay import duties or tax?
No. The price you see at checkout is the price you pay. Duties and taxes are on us, wherever you are. Nothing to pay on the doorstep.
30-day money-back guarantee
Suitable for:
Acetyl Hexapeptide-8
The hero. A signal peptide studied in relation to expression-driven lines. The one people mean when they say "topical botox".
Collagen-derived conditioners
Hydrolyzed collagen, with caviar extract alongside it. Builds a flexible moisture film so the area sits cushioned rather than tight.
Hyaluronic acid
Binds water into the upper layers and holds it there for the length of the wear instead of losing it to the air.
Centella asiatica
The soothing side. Calms skin that reacts to most things, so the actives can work without stinging.
Full ingredients list
