COSRX
The Peptide Collagen Lifting Glow Hydrogel Mask$9.99Round Lab
Birch Moisturizing Wash-Off Pack 80ml
A rinse off hydrating pack from Round Lab's Birch range, for skin that is tight and flaky and wants ten minutes of something richer than a serum.
No reviews yet80ml
$21.24 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- NormalCombinationOily
- Helps with
- DehydrationDullnessBarrier stress
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Key benefits
- Sodium Hyaluronate: a low-weight form of hyaluronic acid, for surface hydration
- Hyaluronic Acid: the catalogue's most common humectant, for water retention
- Panthenol: pro-vitamin B5, carried for softness and moisture
- Allantoin: a soothing, skin-conditioning agent
- Opens with Betula Platyphylla Japonica Juice(520,000ppm), Glycerin, Butylene Glycol, Butyrospermum Parkii (Shea) Butter and Glycereth-26, the ingredients Round Lab put first
- No fragrance or parfum on the ingredient list
Key actives
12Sodium Hyaluronate
a low-weight form of hyaluronic acid, for surface hydration
15Hyaluronic Acid
the catalogue's most common humectant, for water retention
18Dipotassium Glycyrrhizate
a licorice-derived calming agent
Inside the formula
Inside the formula
- 12Sodium Hyaluronate
- 15Hyaluronic Acid
- 18Dipotassium Glycyrrhizate
Where each key active sits on the declared ingredient list, by entry number. Position is proportion: the further forward, the larger its share.
Round Lab Birch Moisturizing Wash-Off Pack 80ml
Is the Birch Moisturizing Wash-Off Pack on this page the Korean-market formula?
Yes. It is the release Round Lab makes for sale inside Korea. The same product name can carry a different ingredient list or a different size in an export version, and we list only the Korean one. Round Lab is one of the brands where we have documented a Korean formula and a US formula that genuinely differ.
Where does the Birch Moisturizing Wash-Off Pack sit in a routine?
It occupies the mask step. Build the routine around the step you are replacing rather than the brand you recognise: a cleanser, a hydrating toner, one serum and one moisturizer is a complete routine, and four products chosen carefully tell you more about your skin than ten bought at once.
What size is the Birch Moisturizing Wash-Off Pack?
80 ml. That is the size Round Lab sells in Korea for this product; it is the same size sold in Korea: we do not substitute an export format or a US size for the Korean one.
How does buying the Birch Moisturizing Wash-Off Pack here compare with a US retailer?
The unit sold here is the unit built for the Korean market, with the Korean barcode and batch code intact on the box. A US listing carrying the same product name may be the export version and rarely tells you which one it is sending.
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 (43): Betula Platyphylla Japonica Juice(520,000ppm), Glycerin, Butylene Glycol, Butyrospermum Parkii (Shea) Butter, Glycereth-26, Caprylic/Capric Triglyceride, Cetyl Ethylhexanoate, Cetearyl Alcohol, 1,2-Hexanediol, Simmondsia Chinensis (Jojoba) Seed Oil, Chlorella Vulgaris Extract, Sodium Hyaluronate, Argania Spinosa Kernel Oil, Cocos Nucifera (Coconut) Oil, Hyaluronic Acid, Panthenol, Allantoin, Dipotassium Glycyrrhizate, Ascorbic Acid, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract, Coccinia Indica Fruit Extract, Aloe Barbadensis Flower Extract, Solanum Melongena (Eggplant) Fruit Extract, Ocimum Sanctum Leaf Extract, Corallina Officinalis Extract, Curcuma Longa (Turmeric) Root Extract, Ammonium Acryloyldimethyltaurate/VP Copolymer, Glyceryl Stearate, Sorbitan Stearate, Water, Silica, Glucose, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Caprylyl Glycol, Fructooligosaccharides, Fructose, Tromethamine, Glyceryl Caprylate, Glyceryl Glucoside, Ethylhexylglycerin, Sodium Phytate, Tocopherol
42 of 43 explained
- Betula Platyphylla Japonica Juice(520,000ppm) plant extract
- Betula Platyphylla Japonica Juice is Asian white birch sap, tapped in spring. It is over 98 percent water with trace minerals and sugars, and Korean formulas use it in place of plain water as a hydrating base.
- 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.
- 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.
- Butyrospermum Parkii (Shea) Butter emollient
- Shea Butter is the fat pressed from the shea nut, rich in oleic and stearic acids and unsaponifiable plant sterols. It is a heavy emollient and partial occlusive, which is why it sits in balms and night creams rather than in essences.
- 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.
- Caprylic/Capric Triglyceride emollient
- Caprylic/Capric Triglyceride is the light fraction of coconut oil, with the heavy parts removed. It is the workhorse emollient of modern formulas: it softens skin, dissolves oil-soluble actives and absorbs without the greasy weight of a whole plant oil.
- Cetyl Ethylhexanoate emollient
- Cetyl Ethylhexanoate is a synthetic ester used as a dry-feeling emollient. It spreads easily, leaves a silky rather than oily finish, and helps disperse pigments and UV filters evenly.
- Cetearyl Alcohol fatty alcohol
- Cetearyl Alcohol is a waxy solid, not the drying kind of alcohol. It is a blend of cetyl and stearyl alcohols used to thicken a cream and keep oil and water from separating, and it softens skin as it does so.
- 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.
- Simmondsia Chinensis (Jojoba) Seed Oil emollient
- Jojoba Oil is a liquid wax rather than a true oil, and its structure is close to human sebum, which is why it absorbs so readily. It is an emollient that leaves a soft, non-greasy finish.
- Chlorella Vulgaris Extract plant extract
- Chlorella Vulgaris is a freshwater green algae. Its extract carries proteins, chlorophyll and amino acids and is used as a conditioning ingredient.
- 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.
30 more explained
- Argania Spinosa Kernel Oil emollient
- Argan Oil is pressed from the argan kernel and is rich in oleic and linoleic acids plus vitamin E. It is a medium-weight emollient that absorbs reasonably fast.
- Cocos Nucifera (Coconut) Oil emollient
- Coconut Oil is high in lauric acid, which makes it a rich emollient and partial occlusive. It is well known to be poorly suited to blemish-prone skin.
- 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.
- Allantoin active
- Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin.
- 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.
- 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.
- Melia Azadirachta Leaf Extract plant extract
- Melia Azadirachta is neem. Its leaf and flower extracts are long-standing Ayurvedic ingredients, and Korean formulas use them in products aimed at the look of congested, blemish-prone skin.
- Coccinia Indica Fruit Extract plant extract
- Coccinia Indica is ivy gourd. Its fruit extract is used as a conditioning, hydrating plant extract in Korean formulas.
- Aloe Barbadensis Flower Extract plant extract
- Aloe Flower Extract comes from the flower rather than the leaf gel. It is used as a conditioning plant extract.
- Solanum Melongena (Eggplant) Fruit Extract plant extract
- Eggplant Fruit Extract carries nasunin, the antioxidant pigment in aubergine skin. It is used as an antioxidant plant extract.
- Ocimum Sanctum Leaf Extract plant extract
- Ocimum Sanctum is holy basil, or tulsi. Its leaf extract carries plant antioxidants and is used in formulas built for the look of stressed, reactive skin.
- Corallina Officinalis Extract plant extract
- Corallina Officinalis is coral seaweed, which holds calcium and magnesium in its structure. Its extract is used as a mineral-rich conditioning ingredient.
- Curcuma Longa (Turmeric) Root Extract plant extract
- Turmeric Root Extract carries curcuminoids, well studied plant antioxidants. It is used for the look of dullness and uneven tone, and it tints a formula faintly yellow.
- Ammonium Acryloyldimethyltaurate/VP Copolymer thickener
- This is a synthetic thickener that gels quickly and holds an emulsion stable across a wide pH range. It gives a light, non-tacky body.
- Glyceryl Stearate emulsifier
- Glyceryl Stearate is glycerin joined to stearic acid, and one of the most used emulsifiers in skincare. It holds oil and water together and thickens the result, and it softens skin at the same time.
- Sorbitan Stearate emulsifier
- Sorbitan Stearate is a mild emulsifier and thickener used to hold oil and water together in creams.
- 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.
- Silica absorbent
- Silica is finely milled mineral, essentially very pure sand. It absorbs oil, stops powders clumping and soft-focuses the look of pores and fine lines.
- Glucose humectant
- Glucose is a simple sugar used as a humectant and as food for the ferment ingredients in the same formula. It hydrates mildly and adds a soft slip.
- Acrylates/C10-30 Alkyl Acrylate Crosspolymer thickener
- This is a carbomer relative with fatty side chains, so it thickens and stabilises an emulsion at the same time. It gives a light gel-cream body rather than a heavy one.
- Caprylyl Glycol preservative booster
- Caprylyl Glycol is a glycol that conditions skin and, more importantly, strengthens a preservative system so less of the traditional preservative is needed. It appears in most modern formulas built without parabens.
- Fructooligosaccharides humectant
- Fructooligosaccharides are short fructose chains used as humectants and as food for the skin's own resident microbes.
- Fructose humectant
- Fructose is a simple sugar used as a light humectant. It holds water in the outer layer and often arrives as part of a fruit or honey extract.
- 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.
- 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.
- Ethylhexylglycerin preservative booster
- Ethylhexylglycerin softens skin and boosts a preservative system, which is why it is nearly always sitting beside phenoxyethanol or 1,2-hexanediol. It also cuts down the odour bacteria produce, so it turns up in deodorising products.
- Sodium Phytate chelator
- Sodium Phytate is a rice-derived chelator used in place of EDTA. It ties up trace metals so the formula stays stable and its colour and scent hold.
- Tocopherol antioxidant
- Tocopherol is vitamin E. It is an oil-soluble antioxidant that protects the oils in a formula from going rancid and works on skin as an emollient, and it is regularly paired with vitamin C because each keeps the other going for longer.
- Market
- Korean market, the version sold in Korea
- Made in
- Republic of Korea
- Volume
- 80ml
- Category
- Mask
- Actives
- Allantoin, Aloe Vera, Birch Sap, Hyaluronic Acid, Jojoba Seed Oil, Licorice Root, Panthenol, Shea Butter, 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.
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 it works
A wash off pack is the version of a mask you rinse, and the point of it is that it can be much richer than anything you would leave on. Birch sap opens this formula, with shea butter, jojoba seed oil, argan kernel oil and coconut oil for the rich side, and hyaluronic acid, panthenol and allantoin behind them. It goes on after cleansing, sits for ten minutes, then rinses, so it replaces nothing in the routine and simply adds a step. Skin that is flaky and tight in winter is the case for a pack like this rather than another serum. Use it once or twice a week, and follow with your usual moisturizer rather than stopping at the rinse.
How to use
- Use the Birch Moisturizing Wash-Off Pack after cleansing.
- A thin even layer over the areas you want it on, kept clear of the eye area and the lips.
- Rinse with lukewarm water at the time the pack gives, then go straight into a hydrating layer and your moisturizer the same evening.
- Once or twice a week. Do not leave it on longer than the pack says in the hope of more effect; a mask past its time works against the surface it is on.
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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Round Lab Birch Moisturizing Wash-Off Pack 80ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
Round Lab, Korean-market original
Round Lab mask, 80 ml: carries sodium hyaluronate.
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 the key actives in this formula, quoted from the medical sources linked beside each.
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 Pantothenol is a common ingredient in skin care and hair products I recommend, particularly for people who are prone to dryness.
Taylor Bullock, MDDermatology resident, 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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