Round Lab
Birch Juice Moisturizing Mask
Round Lab Birch Juice Moisturizing Mask (10 ea) is a wash-off mask for anyone who wants a once-weekly treatment step rather than a daily one, used once or twice a week.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- Normal skinCombination skinOily skinSkin that runs sensitive
- Helps with
- A weekly reset rather than a daily habitSkin that wants a heavier dose of a formula than a daily cream givesCongestion or a dull surface texture
Sold out.
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One email, the moment this exact unit is back in stock. Not a newsletter and not a sequence, and your address comes off the list the second it is sent.
- Duties prepaid
- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
Round Lab Birch Juice Moisturizing Mask is built as a wash-off mask, so its texture and finish are designed around one specific place in a routine rather than several. Round Lab, TIRTIR and Torriden formulate this kind of wash-off mask to feel consistent with the rest of the brand's line, so the texture and absorption speed match what the format is meant to do. The texture is built for use once or twice a week, as a treatment step after cleansing and before your regular toner, which is why it behaves differently on skin than a product meant for a different point in a routine. This is the Korean-market formula of the birch juice moisturizing mask, the version sold on shelves in Korea rather than a formula reworked for a different market.
Key benefits
- Birch sap is declared at 9,900 ppm and sits fourth on the list, a stated concentration rather than a vague mention
- Sodium hyaluronate and allantoin carry the surface moisture and comfort side
- Dipotassium glycyrrhizate adds a licorice-derived calming note
- Fragrance-free and essential-oil-free
- 10 sheets per box, sized for a course of treatments rather than a single mask
Key actives
Betula Platyphylla Japonica JuiceDeclared at 9,900 ppm, fourth on the list
A high-concentration birch sap sourced from Inje, Korea, the ingredient the whole Birch Juice line is built around.
Sodium HyaluronateHydration carrier
Holds the birch sap's water against the surface for the mask's full contact time. It is a humectant, so it pulls in and binds moisture rather than adding oil, which keeps the finish from feeling heavy.
AllantoinSoothing agent
Keeps the mask comfortable on skin that is dehydrated or freshly cleansed. It is one of the most widely used conditioning agents in Korean skincare precisely because it rarely irritates on its own.
Dipotassium GlycyrrhizateCalming ingredient
A licorice-root derivative added for its reputation calming reactive skin. It sits well down the ingredient list, so it functions as a supporting player alongside allantoin rather than the mask's main mechanism.
Round Lab Birch Juice Moisturizing Mask
Is this the same formula sold in Korea, or a version made for the US market?
This is the Korean-market formula, the same one sold on shelves in Korea, not a separate version reformulated for US retail. The pack you open matches what a shopper in Seoul buys.
Where does this step go in a routine?
It belongs once or twice a week, as a treatment step after cleansing and before your regular toner. Placing it earlier or later than that changes how it feels going on and how well the steps after it absorb, so keeping it in that order is worth doing even on a simplified routine.
Can I use this if my skin runs sensitive?
This wash-off mask is formulated with skin types like normal skin, combination skin in mind, but any new product is worth a patch test first if your skin reacts easily. A short patch test on the inside of your arm or behind an ear is worth doing with any new product before it goes on your face, and that goes for sensitive skin most of all.
How long before I will know if this is right for my skin?
Give it a full week or two of consistent use before judging, since a single use rarely tells you much either way. Watch for how skin feels rather than for any specific number, and stop use if you notice ongoing irritation.
- 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 in the evening after cleansing and toner, on skin that is dry rather than damp with product.
- Unfold the sheet, line it up at the eyes first, then press it flat from the middle outwards.
- Leave it fifteen to twenty minutes and take it off while it is still damp rather than letting it dry on the face.
- Two or three times a week. Pat in what is left and put a moisturizer over it instead of rinsing.
Worth knowing
- Rinse fully with lukewarm water rather than leaving any residue behind, since a wash-off mask is not meant to sit on skin overnight.
- Keep this to once or twice a week; using a treatment mask daily works against a normal routine rather than for it.
Reviews
No reviews yet. Tell us how much you love the product!
Write Reviews (opens in a new tab)Round Lab, Korean-market original
Moisturizing facial pads, 10 ea, with Birch Sap, Sodium Hyaluronate and Allantoin.
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 the key actives in this formula, quoted from the medical sources linked beside each.
It helps to reduce inflammation of the skin and retain moisture to maintain the barrier function of skin.
Dr. Jaishree SharadDermatologist, Femina Hyaluronic acid helps bind water to collagen, which traps water in the skin. That helps make the skin more plump and full-looking.
Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic
1 more professional perspective
Allantoin can tone down the dryness of the individual cells. It increases the water content of the skin, which means it helps to hydrate and moisturize.
Wilma Bergfeld, MDDermatologist, Cleveland Clinic
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