numbuzin No.4 SOS Icy Soothing Sheet Mask 10P
Numbuzin No.4 SOS Icy Soothing Sheet Mask 10P is a sheet mask that names Methyl Diisopropyl Propionamide on its own ingredient panel, sourced as the Korean-market formula.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- normalcombinationdryoily
- Helps with
- tone and texture supported by Panthenoldaily hydration through the sheet mask stepa Korean-market formula rather than a US reformulationa routine step matched to this format
In stock. Ships from our California warehouse, dispatched within 2 business days
You’re $100.00 away from free US shipping.
- Duties prepaid
- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
Methyl Diisopropyl Propionamide is named on the ingredient panel on this sheet mask. A synthetic cooling agent that gives the cool feeling of menthol without the mint smell. It is used where a formula wants the sensation but not the scent. On this panel it sits alongside Adenosine, Laminaria Japonica Extract and Eclipta Prostrata Leaf Extract. Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated.
Key benefits
- Methyl Diisopropyl Propionamide named on this product's own ingredient panel
- Adenosine on the same panel, the formula's active
- Laminaria Japonica Extract on the same panel, the formula's plant extract
- Korean GS1 barcode matched against a Korea sourcing supplier's record for this item
Key actives
Methyl Diisopropyl Propionamide
A synthetic cooling agent that gives the cool feeling of menthol without the mint smell. It is used where a formula wants the sensation but not the scent.
Adenosine
Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated.
Laminaria Japonica Extract
Laminaria Japonica is kombu kelp. Its extract carries alginates, minerals and iodine, and it is used as a hydrating, mineral-rich ingredient.
Eclipta Prostrata Leaf Extract
Eclipta Prostrata is false daisy, long used in Ayurvedic and East Asian practice. Its extract is used as a conditioning plant extract, most often in scalp and hair formulas.
When in a routine should I use this sheet mask?
Use it as the weekly treatment, two to three times a week, for 15 to 20 minutes. Placing a sheet mask out of order is the most common reason a Korean routine feels like it is not working, so keep this one at its own step rather than doubling it up with a product built for a different stage. Give it a few weeks at that placement before judging the result.
Is this the same formula sold in Korea, or a US version?
This is sourced for the Korean market rather than reformulated for US shelves. Numbuzin sells a separate reformulation on some US shelves, and this listing is not that version. The Korean-market batch coding and packaging travel with it, which is the detail worth checking against the box on arrival.
Where does this formula come from?
It comes from the Korean-market catalog rather than a US-shelf reformulation, and the packaging carries the same Korean-market batch coding a shopper would find on the box in Korea. That sourcing is checked on this row before the page is written, not assumed from the product name. It is the detail worth checking against the box on arrival.
What does Panthenol do in this formula?
Panthenol is pro-vitamin B5, a conditioning agent Korean formulas lean on to keep the surface feeling soft rather than tight. It has a long track record in Korean skincare as a mild, everyday conditioning agent that layers cleanly under the rest of a routine. It sits at its own position on this product's own ingredient list rather than being assumed from the product name.
What does Methyl Diisopropyl Propionamide do in this formula?
A synthetic cooling agent that gives the cool feeling of menthol without the mint smell. It is used where a formula wants the sensation but not the scent. It is named on this product's own ingredient panel.
- Ships from
- California
Duties are prepaid. Nothing is owed at delivery. Returns are accepted for 30 days, by mail.
Orders ship from our California warehouse, dispatched within 2 business days, and arrive in 3 to 5 days. Shipping is free on orders of $100 or more.
We split shipments free, so one out-of-stock item never holds up the rest of your order.
Where this unit came from
- 1Seoul
Bought as Korean-market stock - 2Customs
Duty paid by us before it enters the US - 3California
Ships domestically, no international leg
We stock the version of a formula that is sold in Korea, not the release a brand prepares for another market under the same name.
Every unit keeps its original barcode and batch code intact, so the unit in your hands can be checked against the brand’s own records.
Import duties are paid by us before the parcel reaches you, so nothing is owed at the door, and returns run for 30 days.
Every claim on this page traces to the unit in the box, the barcode, the batch code and the price you can read for yourself.
Payment and security
We accept
How to use
- Use it as the weekly treatment, two to three times a week, for 15 to 20 minutes, giving it a moment to settle before the next step.
Worth knowing
- Patch test on the inner arm first if trying a new brand's formula for the first time.
- Stop use and check the ingredient list against any known sensitivities before continuing.
Reviews
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Korean-market original
The Korean-market sheet mask built around Panthenol, from Numbuzin, sourced for the Korean market and reviewed before it ever reaches this page.
Verify your unit when it arrives
Verify your unit when it arrives
Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.
Match the batch code on the box against the code printed on the bottle or tube itself; the two are stamped separately and should agree.
On the unit itself
- The Korean-market barcode, unaltered from the retail package.
- The manufacturer’s batch code, exactly as the maker printed it.
정품Genuine article, Korean-market stock
What professionals say
What professionals say
What skin-care professionals say about skin care, quoted from the medical sources linked beside each.
Your skin barrier is basically your outer layer of the skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic Pretty much every step of a Korean skin care routine is going to have some component of hydration.
Alok Vij, MDDermatologist, Cleveland Clinic
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