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Glutathiosome Dark Spot Pad$19.99Round Lab
Birch Juice Moisturizing Toner
Round Lab Birch Juice Moisturizing Toner (300 ml) is a toner for anyone who wants the first watery layer of a Korean routine, used first among your leave-on steps.
No reviews yet300ml
$8.33 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Normal skinDry skinCombination skinSkin that runs sensitive
- Helps with
- A watery first layer of hydration right after cleansingSkin that feels tight the moment washing is donePrepping skin so the next step spreads more evenly
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$19.99
$37.50
$24.71
- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
Round Lab Birch Juice Moisturizing Toner is built as a toner, so its texture and finish are designed around one specific place in a routine rather than several. The formula's own ingredient list carries Panthenol (Pro-Vitamin B5), Hyaluronic Acid, Sodium Hyaluronate among its named ingredients, placed at a level consistent with a toner rather than a spot treatment. The texture is built for use first among your leave-on steps, right after cleansing and before any essence, serum or moisturizer, 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 toner, the version sold on shelves in Korea rather than a formula reworked for a different market.
Key benefits
- Birch sap is declared at 10,000 ppm and is sixth on the list
- Sodium hyaluronate and hyaluronic acid follow immediately after, at tenth and eleventh
- Panthenol and dipotassium glycyrrhizate keep daily cotton-pad use calm
- Ascorbic acid closes the list, a mild antioxidant note rather than a vitamin C treatment
- 300 ml, sized for cotton-pad and toner-pack habits
- The first step in the original Korean-market Birch Juice line, the same list Round Lab sells in Seoul
Inside the formula
Inside the formula
Birch Juice Moisturizing Toner
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 first among your leave-on steps, right after cleansing and before any essence, serum or moisturizer. 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 toner is formulated with skin types like normal skin, dry 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.
Not on the ingredient list below: fragrance or parfum, denatured or SD alcohol, essential oils, silicones, parabens, sulfate surfactants, mineral oil or petrolatum and added color.
Full INCI (21): Purified Water, Glycerin, Propanediol, Glycereth-26, Pentylene Glycol, Betula Alba Juice (10,000ppm), 1,2-Hexanediol, Chondrus Crispus Extract, Saccharum Officinarum Extract, Sodium Hyaluronate, Hyaluronic Acid, Panthenol, Tromethamine, Dipotassium Glycyrrhizate, Glyceryl Caprylate, Glyceryl Glucoside, Butylene Glycol, Ascorbic Acid, Carbomer, Xanthan Gum, Disodium EDTA
Ingredient list read from incidecoder.com on 30 August 2026.
21 of 21 explained
- Purified Water solvent
- Water is the base almost every serum, toner and cream is built on. It dissolves the water-loving ingredients and sets how light the finished texture feels. On an INCI list it is usually first, which only means it is the largest single ingredient by weight.
- Glycerin humectant
- Glycerin is the most used humectant in skincare. It draws water into the outer layer of skin and holds it there, and it is one of the very few ingredients whose hydrating effect is settled science rather than marketing. Higher amounts feel tacky, which is why it is usually blended.
- Propanediol humectant
- Propanediol is a plant-derived glycol used in place of propylene glycol. It hydrates, carries actives into solution, and gives a lighter, less sticky slip than glycerin at the same strength.
- Glycereth-26 humectant
- Glycereth-26 is a modified glycerin that hydrates with far less stickiness than glycerin itself. It is a common way to load water into a formula that has to stay light.
- Pentylene Glycol humectant
- Pentylene Glycol hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter. It also improves how evenly a product spreads.
- Betula Alba Juice (10,000ppm) plant extract
- Birch juice is sap tapped from the white birch in spring. It is mostly water with sugars, minerals and amino acids, and Korean formulas use it in place of water as the base.
- 1,2-Hexanediol humectant
- 1,2-Hexanediol is a glycol used for two reasons: it holds water like glycerin, and it makes a formula harder for microbes to live in, so less traditional preservative is needed. Korean formulas use it heavily for that second reason.
- Chondrus Crispus Extract plant extract
- Chondrus Crispus is Irish moss, a red seaweed. It is loaded with carrageenan, so it hydrates and thickens at once, and it leaves a cushioned, slippery film.
- Saccharum Officinarum Extract plant extract
- Sugarcane Extract carries natural glycolic acid and sugars. In cosmetics it is used as a humectant; the acid content is far too low to work as an exfoliant.
- Sodium Hyaluronate humectant
- Sodium Hyaluronate is the salt of hyaluronic acid, and it is what most products labelled hyaluronic actually contain. The salt dissolves more readily and the molecule is smaller, so it sits in the outer layer of skin rather than only on top of it.
- Hyaluronic Acid humectant
- Hyaluronic Acid is a sugar chain the body already makes, and one gram of it can hold several litres of water. In a formula it is a humectant that pulls water to the surface of skin and holds it in a film, which is what makes skin look plumper while it is there.
- Panthenol humectant
- Panthenol is pro-vitamin B5: skin converts it to pantothenic acid. It is a humectant that holds water and leaves skin feeling soft and less tight, and it is one of the ingredients formulators reach for when a formula also contains something harsh.
9 more explained
- Tromethamine pH adjuster
- Tromethamine neutralises acidic thickeners such as carbomer so they gel, and holds a formula near skin-friendly pH. It is used at a fraction of a percent.
- Dipotassium Glycyrrhizate active
- Dipotassium Glycyrrhizate is a water-soluble salt derived from licorice root. It is the licorice fraction Korean formulas use for the look of redness, and it is far more stable in water than the whole extract.
- Glyceryl Caprylate emulsifier
- Glyceryl Caprylate is a mild emulsifier that also makes a formula less hospitable to microbes, so it is often part of a preservative-free system.
- Glyceryl Glucoside humectant
- Glyceryl Glucoside is glycerin bound to glucose, from the resurrection plant. It is a humectant that holds water in the outer layer of skin.
- Butylene Glycol humectant
- Butylene Glycol is a small glycol that does two jobs at once: it holds water in the top layer of skin and it dissolves plant extracts and actives that plain water cannot. It also thins a formula, which is why watery Korean essences lean on it.
- Ascorbic Acid antioxidant
- Ascorbic Acid is pure vitamin C, the most researched form and also the least stable: it needs a low pH and airtight packaging to stay active. It is an antioxidant used for the look of dullness and uneven tone.
- Carbomer thickener
- Carbomer is a synthetic polymer that only gels once a base neutralises it, which is why arginine or tromethamine sits nearby on the list. It gives the clear, non-stringy gel texture a xanthan formula cannot reach.
- Xanthan Gum thickener
- Xanthan Gum is a polysaccharide made by fermenting sugar. It thickens a watery formula into a gel and holds the whole thing in suspension so nothing separates. Too much of it and a serum turns stringy, which is why it appears in fractions of a percent.
- Disodium EDTA chelator
- EDTA is a chelator: it locks up trace metal ions from water and packaging that would otherwise turn a formula cloudy, off-colour or rancid. It does nothing to skin and appears at a fraction of a percent.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809738600214
- Made in
- Republic of Korea
- Volume
- 300ml
- Category
- Toner / Hydrating Toner
- Actives
- Birch Sap, Hyaluronic Acid, Licorice Root, Panthenol, Sodium Hyaluronate, Vitamin C
- Ships from
- California or Korea
Orders ship from California or direct from Korea with tracked delivery to your door, and both routes carry the same Korean-market release. Shipping is free on orders of $100 or more. Returns are accepted for 30 days, by mail.
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 - 2Barcode
Listed against the Korean barcode on its box - 3California or Korea
Ships to you from either, as the same Korean-market release
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. The barcode in the specification above is the Korean-market one and it is printed on the box you receive.
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.
Every order ships from California or direct from Korea, 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.
How to use
- Use it right after cleansing, morning and evening, while the skin is still slightly damp.
- Two or three palmfuls pressed in with flat hands, or one soaked cotton pad swept over the face.
- Layer a second and a third pass on a dry day, waiting only a few seconds between them.
- Follow with a serum and a moisturizer. Do not stop at the toner and expect it to hold water on its own.
Worth knowing
- Pat the toner in with palms rather than dragging a cotton pad hard across skin, since friction rather than the formula is what irritates sensitive skin.
- Layer a serum or moisturizer over it while skin is still slightly damp, since a toner alone is not built to be the last step.
Reviews
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Round Lab Birch Juice Moisturizing Toner
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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
Two hydrating serums side by side, IUNIK and Dr. Althea.
Kristin · YouTube
A walk through the Dr. Althea serum lineup and who each one suits.
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
Round Lab, Korean-market original
Hydrating toner, 300 ml, with Birch Sap, Hyaluronic Acid and Panthenol.
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.
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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