Round Lab Birch Juice Moisturizing UV Lock Sunscreen
Round Lab's Birch Juice Moisturizing UV Lock Sunscreen is 50 ml, used as the last step of the morning routine.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- NormalCombinationOilySensitive
- Helps with
- Uneven toneDark spotsDullness
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
Key benefits
- Birch Juice Moisturizing UV Lock Sunscreen is Round Lab's sunscreen, sourced for the Korean market rather than reformulated for US shelves.
- Carries Butyl Methoxydibenzoylmethane, which is a chemical UV filter used for broader-spectrum coverage in Korean sunscreen formulas.
- Carries Ethylhexyl Salicylate, which is a chemical UV filter common in Korean sunscreen formulas.
- Carries Homosalate, which is a chemical UV filter used to stabilize a sunscreen's UVB coverage.
- Ships with the Korean-market barcode and batch code intact, the same box sold on Korean shelves rather than a US repack.
- Suited to shoppers targeting uneven tone and dark spots.
Key actives
Butyl Methoxydibenzoylmethane
Butyl Methoxydibenzoylmethane is a chemical UV filter used for broader-spectrum coverage in Korean sunscreen formulas. It sits at this position on the ingredient list, which in Korean cosmetic labeling reflects concentration order rather than a fixed percentage.
Ethylhexyl Salicylate
Ethylhexyl Salicylate is a chemical UV filter common in Korean sunscreen formulas. It sits at this position on the ingredient list, which in Korean cosmetic labeling reflects concentration order rather than a fixed percentage.
Homosalate
Homosalate is a chemical UV filter used to stabilize a sunscreen's UVB coverage. It sits at this position on the ingredient list, which in Korean cosmetic labeling reflects concentration order rather than a fixed percentage.
Niacinamide
Niacinamide is the brightening, barrier-supporting workhorse behind most Korean tone-evening formulas, and it layers easily under sunscreen and makeup. It sits at this position on the ingredient list, which in Korean cosmetic labeling reflects concentration order rather than a fixed percentage.
Betula Platyphylla Japonica Juice
Betula Platyphylla Japonica Juice is Round Lab's signature birch sap, the brand's own moisture base drawn from Korean white birch trees. It sits at this position on the ingredient list, which in Korean cosmetic labeling reflects concentration order rather than a fixed percentage.
How to use
- Use the Birch Juice Moisturizing UV Lock Sunscreen as the last step of the morning routine, over moisturizer and under makeup.
- Apply it at the last stage of skincare routine 15 minutes before heading out. Gently massage for better absorption.
- Nothing skincare goes over it. It is the last thing on in the morning, and it is never mixed into the moisturizer underneath it.
- Every morning, and again through the day as the instruction on the pack directs. Do not stir it into your moisturizer to save a step.
What is Birch Juice Moisturizing UV Lock Sunscreen?
It is Round Lab's sunscreen, sold as the Korean-market formula rather than a version reformulated for US retail. It carries Butyl Methoxydibenzoylmethane and Ethylhexyl Salicylate, named in the form our sourced ingredient list uses. It sits at the final sun-care step in a layered Korean routine.
Who is Birch Juice Moisturizing UV Lock Sunscreen suited for?
It suits shoppers targeting uneven tone and dark spots, and it is built for the final sun-care step rather than a different stage of the routine. Patch test first if you are new to Round Lab or to this formula.
Is Birch Juice Moisturizing UV Lock Sunscreen the authentic Korean-market formula?
Yes. We source Round Lab's Korean-market formula rather than a version reformulated for US shelves. What ships is the listed unit sold on Korean shelves, with the Korean barcode and batch code intact on the box.
What does Round Lab make besides Birch Juice Moisturizing UV Lock Sunscreen?
Round Lab formulates around a small set of single-origin naturals (pine, birch sap, soybean, camellia, Dokdo island seawater) rather than chasing trend ingredients, and builds most of its lines around one hero botanical at a time. This sunscreen sits alongside the rest of Round Lab's Korean-market catalog on our site, all sourced the same way.
- 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 it works
Birch Juice Moisturizing UV Lock Sunscreen is Round Lab's sunscreen, sitting at the final sun-care step in a layered Korean routine. Butyl Methoxydibenzoylmethane is a chemical UV filter used for broader-spectrum coverage in Korean sunscreen formulas. Ethylhexyl Salicylate is a chemical UV filter common in Korean sunscreen formulas. Homosalate is a chemical UV filter used to stabilize a sunscreen's UVB coverage. As a Korean-market sunscreen, the filter system and finish are formulated to Korean cosmetic standards rather than the US OTC monograph, which is exactly why shoppers look for it by name instead of settling for a US-shelf substitute. Round Lab sells Birch Juice Moisturizing UV Lock Sunscreen as one entry in a wider catalog, and this 50.0ml is sized the way Korean shoppers actually buy it rather than a US-market repack.
Worth knowing
- Patch test on the inner arm before first use on the face, especially if trying this brand or formula for the first time.
- Store away from direct sunlight and heat so the formula and any actives inside stay stable through its shelf life.
Reviews
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Korean-market original
Birch Juice Moisturizing UV Lock Sunscreen, Round Lab's sunscreen in its authentic Korean-market formula.
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 Niacinamide helps reduce the appearance of pores in a few ways. By strengthening the skin barrier and improving elasticity, pores appear less noticeable and more even.
Ashlyn YankeAesthetician, Cleveland Clinic
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