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New: the Sea Kelp Neck Mask has landed
Buta Byul Kelp Neck Mask

Buta Byul

Buta Byul Kelp Neck Mask

Calming · Hydrating · Smoothing · 4 masks per box, 1.19 oz each

$34.99
Dasima kelpKelp fermentDeep sea waterShaped for the neck
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20 minper treatment
No needlesat-home care
No messsolid gel
What it does
  • Floods dry neck skin with moisture so lines look softer
  • Calms and cools stressed, tight-feeling skin
  • Leaves the neck smoother and more refreshed-looking
How to use

Cleanse and dry your neck. Peel off the textured film, place the mask from jaw to collarbone, then remove the smooth film. Relax for 20 to 30 minutes, remove, and pat the rest in.

Key ingredients

Dasima (sea kelp), Kelp Ferment Filtrate, Deep Sea Water. The full ingredient list is printed on every box.

Shipping & subscriptions

Free shipping on orders over $50. Subscriptions can be skipped, paused or cancelled anytime from your account.

Details

Glow from chin to collarbone.

Your face gets serums, SPF and sheet masks. Your neck gets whatever's left on your hands. The Kelp Neck Mask is made for the skin your routine forgets.

Shaped to sit from your jaw to your collarbone, this cooling gel mask is packed with Korean sea kelp to calm, hydrate and smooth the look of neck lines in just 20 minutes. Lie back, scroll guilt-free, and peel off softer, smoother, happier skin.

Why you'll love it

  • Cools on contact. Instantly calming for tight, stressed neck skin.
  • Deep hydration that stays put. The gel seals moisture against your skin instead of letting it evaporate.
  • Smoother-looking lines. Softens the look of tech-neck lines and crepey texture.
  • No mess, no drips. A solid gel mask, not a soggy sheet.
  • Made for the neck. No more cutting up face masks.

What's inside

  • Dasima (sea kelp): mineral-rich Korean kelp that soothes and comforts.
  • Kelp ferment filtrate: a lighter, easy-absorbing form of kelp.
  • Deep sea water: refreshes and replenishes lost moisture.

How to use

  1. Cleanse your neck and pat it dry.
  2. Peel off the textured film, place the mask from jaw to collarbone, then remove the smooth film.
  3. Relax for 20 to 30 minutes. Remove and pat the leftover essence in.

Use 2 to 3 times a week. What you get: 4 individually sealed neck masks, 1.19 oz (34 g) each.

Cosmetic use only. Patch test before first use. Individual results vary.

Buta Byul Kelp Neck Mask Add to cart

The promise

Three things, done properly.

Every Buta Byul neck mask is built around three jobs. Here is exactly how it does each one.

01

Calm.

Cools and soothes stressed skin on contact.

The gel feels cool the moment it touches your skin. Mineral-rich Dasima sea kelp releases slippery, cushioning polysaccharides that comfort tight, irritated neck skin while you relax.

Why your neck needs it

Collars, sun, fragrance and constant movement leave neck skin tight and reactive, and most routines never treat it.

What does itDasima sea kelp
  • Cool on contact
  • Soothes tight, stressed skin
  • Gentle enough for weekly use
02

Hydrate.

Floods thin, thirsty skin with moisture.

The solid gel works like a lid. It seals deep sea water and kelp ferment filtrate against your skin for 20 minutes, so moisture goes in instead of evaporating like a cream.

Why your neck needs it

Neck skin is thinner than your face and has fewer oil glands, so it loses water faster and shows dryness first.

What does itDeep sea water + kelp ferment filtrate
  • Sealed in for 20 minutes
  • Lightweight, easy absorption
  • Nothing drips on your clothes
03

Smooth.

Softens the look of lines and crepey texture.

Dehydrated skin creases deeper. When neck skin is properly hydrated, folds look softer and texture looks smoother. The mask is shaped jaw to collarbone so it treats exactly where tech-neck lines form.

Why your neck needs it

Every scroll and text folds the same creases. Hydration is the step that makes them look less deep.

What does itThe full sea kelp formula, shaped for the neck
  • Smoother-looking lines
  • Softer, more supple feel
  • Best with 2 to 3 masks a week
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Sound familiar?

You probably noticed it in a photo first. And it didn't look like you.

Horizontal creases, crepey texture, a neck that looks older than your face. It happens to almost everyone, and it's the skin most routines skip.

Crepey texture
Crepey textureThin, dry skin that creases and folds
Tech-neck lines
Tech-neck linesHorizontal rings from looking down
Lines starting early
Lines starting earlyFaint creases showing up in your 30s

Illustrative AI-generated images of common neck concerns. Not Buta Byul customers or results.

See how it helps

Find your fix

What's bothering your neck?

Pick the one that sounds most like you. We'll show you what the mask does for it and how often to use it.

Your plan

Soften the look of tech-neck lines.

Creases look deepest when neck skin is dehydrated. The gel holds moisture against the fold for 20 minutes, so lines look softer and smoother when you take it off.

  • Use 3 times a week for the first month
  • Hold your phone at eye level between masks
  • Pat leftover essence upward, never downward
2 boxes · 8 masks
A full month at 2 to 3 times a weekShop this plan

The science of the gel

Why a gel mask beats another cream.

Creams sit on top and evaporate. A gel mask seals the essence against your skin and keeps feeding it the whole time you wear it.

01
Seals in the essence

The solid gel layer acts like a lid, so moisture goes into your skin instead of into the air.

02
Shaped for the neck

Cut to sit under the jaw and curve toward the collarbone, where face masks never reach.

03
Nothing to drip

The essence is held inside the gel, not soaked into a wet fabric sheet, so your clothes stay dry.

How the mask works on your skin Protective film (peeled off before use) Sea kelp gel layer Dasima · Kelp ferment · Deep sea water Neck skin Gel holds essence on skin for 20 to 30 min Essence moves into skin instead of evaporating

Ocean-powered formula

Three sea actives. One neck mask.

Dasima Sea Kelp
Saccharina japonica · Dasima

Calms stressed, tight-feeling skin.

Dasima is the broad-leaf kelp Korean kitchens and spas have used for generations. It's naturally rich in minerals and slippery polysaccharides that cushion and comfort dry skin.

  • Soothes and calms
  • Mineral-rich
  • Cushions dry skin

What to expect

From the first minute to your new routine.

Min
1Instant cool

The gel feels cool and calming the moment it touches your skin.

Min
20Soaked in

Your neck feels hydrated, soft and refreshed when you peel it off.

Next
AMStill smooth

Skin stays softer and more comfortable into the next day.

Wk
4A real habit

Two to three masks a week keeps your neck consistently hydrated.

Describes how the mask feels with regular use. Individual results vary.

The 20-minute ritual

Three steps. Zero effort.

Cleanse

Cleanse

Wash your neck and pat it dry so the gel grips clean skin.

Apply

Apply

Peel the textured film, place it jaw to collarbone, then remove the smooth film.

Relax

Relax

Lean back for 20 to 30 minutes. Remove and pat the remaining essence upward.

Pro tip Chill the pouch in the fridge for an extra-cooling mask.Pro tip Lie back or recline. It stays put best when you're still.Pro tip Sweep leftover essence down onto your chest.

Your options

The easy way to care for your neck.

Buta Byul Neck MaskCut-up face maskNeck creamInjectables
Shaped for the neckYesNon/an/a
Needle-freeYesYesYesNo
At home, no appointmentYesYesYesNo
Intensive treatment20-min gel maskWet sheet, dripsRub-in onlyClinic visit
Mess on clothes or sheetsNoneOftenSometimesNone
Cost$$$$$$$$

What real people say about neck lines

The advice that built this mask.

260+ upvotes
“I’ve noticed mine diminish loads when I actually bring my skincare down to my neck.”
Top answer in a skincare forum thread on softening neck lines
Most asked
“I’m looking for actual things people can do cosmetically for this.”
The original question, from someone tired of being told to ignore them
The gap
“I bring all my skincare down to my neck. Have you found a solution? Not at all!”
A reply in the same thread, still searching

Quotes are from a public skincare discussion about neck lines, not reviews of Buta Byul.

Pair it

Face mask on? Neck mask too.

Your favorite face mask stops at the jaw. Wear this at the same time and give your whole look one complete treatment.

  • Same 20 minutes, twice the care
  • Neck finally matches your face
  • Perfect before events and photos
Face mask on? Face mask on?

Questions

Good to know.

Still deciding? Here's everything people ask before their first box.

How long do I wear it?

20 to 30 minutes. Remove it and gently pat the remaining essence into your neck and chest.

How often should I use it?

Two to three times a week works well as a routine. Add an extra one before any event where your neckline is on show.

Will it slide off?

It grips best on clean, dry skin while you sit back or lie down. Think of it as a relaxing step, not one for doing chores in.

Will it get on my clothes or pillow?

The essence is held inside a solid gel rather than a soaking-wet sheet, so there's nothing to drip.

Can I wear it with a face mask?

Yes. Wear both at once for a full face-and-neck treatment in the same 20 minutes.

Is it OK for sensitive skin?

The formula is built around calming sea kelp. As with any new skincare, try it on a small area first.

When will I see results?

Most people feel softer, more hydrated skin after the first mask. For a consistently smoother-looking neck, use it two to three times a week.

What's in the box?

Four individually sealed neck masks, 1.19 oz (34 g) each. The full ingredient list is printed on the box.

Can I cancel my subscription?

Yes. Skip, pause or cancel anytime from your account.

Founding reviewers

Be one of the first to review it.

We're new, and we'd rather show you real reviews than borrowed ones. Join the list for early access, launch pricing and a chance to try a box before anyone else.

Buta Byul

Your neck, finally cared for.

Four sea kelp masks. Twenty minutes each. Start tonight.

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