Intact Korean batch codes on every unit

Free US shipping on orders of $100 or more. 100% authentic Korean-market formulas. Ships from our California warehouse, at your door in 3-5 days. Intact Korean batch codes on every unit.

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KOREAN PHARMACY

Round Lab Birch Juice Moisturizing Cleanser

Round Lab Birch Juice Moisturizing Cleanser is a daily foaming cleanser for skin that feels tight and dehydrated by midday, used as your cleansing step.

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$15.29
  • Ships from our California warehouse
  • Duties prepaid
Suited to
Dry skinDehydrated skinNormal skinCombination skin
Helps with
Everyday hydrationA plumper looking surfaceComfort after cleansing

In stock. Ships from our California warehouse, dispatched within 2 business days

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  • Duties prepaid
  • 30-day returns
  • Free US shipping on orders of $100 or more
  • Dispatched within 2 business days

How it works

A foaming cleanser is a rinse-off step, so nothing about it stays on the skin and it is judged by how the face feels a minute after rinsing. Worked into a lather in wet hands, it lifts the day's oil and grime off the surface and takes it away with the rinse water. Skin holding enough water in its top layer reflects light more evenly and feels supple, and that is the whole of what a hydrating step changes. A cleansing water wipes off without rinsing, while a foam needs running water and does a more thorough job of it. The result you can judge yourself is whether your skin still feels comfortable hours after you finish your routine.

Key benefits

  • Birch Juice Moisturizing Cleanser is Round Lab's cleanser, sourced for the Korean market rather than reformulated for US shelves.
  • Carries Betula Platyphylla Japonica Juice, which is Round Lab's signature birch sap, the brand's own moisture base drawn from Korean white birch trees.
  • Carries Sodium Hyaluronate, which is a salt-form humectant from the hyaluronan family, smaller and faster-absorbing than the parent molecule, and a staple of Korean hydration formulas.
  • Carries Hyaluronic Acid, which is the water-binding polymer most Korean hydration formulas are built around.
  • 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 dehydration and a compromised moisture barrier.

Key actives

Glycerin

Glycerin is the workhorse humectant of skincare: it draws water into the top of the surface and keeps a formula from feeling tight as it settles.

Betula Platyphylla Japonica Juice

Birch Sap stands in for most of the water in this formula, which is the whole idea of the line: the hydrating base is a plant juice rather than plain water.

Sodium Hyaluronate

Sodium Hyaluronate is the salt form of hyaluronic acid, used because it holds a large amount of water at the surface and spreads more evenly than the acid itself.

Hyaluronic Acid

Hyaluronic Acid is here as a second water binding form alongside its salt, which is a common Korean approach to spreading the effect across different molecular sizes.

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Round Lab Birch Juice Moisturizing Cleanser

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How to use

  1. Wet the face with lukewarm water, since a lather on dry skin drags rather than glides.
  2. Work a small amount into a lather in your palms first, then massage it over the face for about thirty seconds.
  3. Rinse thoroughly, especially along the jaw and hairline where cleanser gets left behind.
  4. Do not use hot water or scrub at the skin, and do not wait for the face to dry before your next step.

Worth knowing

  • Patch test on a small area first if your skin reacts easily to new products.
  • Apply it on damp rather than dry skin, since a hydrating step has more to hold on to that way.

Reviews

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We’re on gram!

Creators trying on authentic Korean skincare routines and products from us.

  • Rating a shelf of Dr. Althea products one by one.

    Jasmine Loo · YouTube

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    Kristin · YouTube

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    auraofmahmuda · YouTube

  • A blunt first take on the Dr. Althea range.

    Lexi Chang · YouTube

  • A first look at the viral 345 Relief Cream before buying.

    Shelley Nayak · YouTube

  • A first try of the Dr. Althea serum on camera.

    Hannah Ziad · YouTube

Korean-market original

A daily foaming cleanser, 150ml, for skin that feels tight and dehydrated by midday. Authentic Round Lab 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
  • 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

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