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Licorice First Essence$27.05Cell Fusion C
Low pH pHarrier Toner 300ml
Cell Fusion C Low pH pHarrier Toner is a 300ml toner with Gluconolactone, used straight after cleansing, morning and evening, while the face is still damp.
No reviews yet300 ml
$10.00 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Congested skinUneven textureDehydrated skinSensitive skin
- Helps with
- Shoppers looking for Gluconolactone in a tonerRoutines that want Gluconolactone and Melissa Officinalis Extract in one stepFilling the toner step with a Korean-market formulaAnyone who wants the Gluconolactone toner sold on Korean shelves
In stock. Arrives in 3 to 7 business days
We accept
You’re $100.00 away from free US shipping.
- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
The Low pH pHarrier Toner is a 300ml toner, used straight after cleansing, morning and evening, while the face is still damp. The exfoliant it is built around is Gluconolactone, named thirteenth on its own ingredient list. The same list carries Melissa Officinalis Extract, Methyl Gluceth-20 and Glycereth-26, so the exfoliant is not the only thing on it worth naming. How much of the Gluconolactone stays on the skin, and for how long, is decided by the toner format rather than by the list alone. This is the Original Korean Formula, the toner Cell Fusion C sells in Korea, Gluconolactone and all.
Key benefits
- Gluconolactone, the exfoliant this toner is built around
- Melissa Officinalis Extract on the same list, a plant extract
- Methyl Gluceth-20, Glycereth-26 and Hydrolyzed Hyaluronic Acid on the same list, humectants
- Sodium Hyaluronate and Hyaluronic Acid further down the same list
- Gluconolactone named thirteenth on the manufacturer list printed on this page
- Original Korean Formula, the toner sold on Korean shelves
Inside the formula
Inside the formula
Where does this toner go in my routine?
Straight after cleansing, morning and evening, while the face is still damp. Anything thinner than a toner goes on before it, and anything richer goes on after. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Gluconolactone and not three changes at once.
Is this the Korean-market toner or a US version?
The Korean-market one, Gluconolactone and all. We match this toner to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.
What else is on the list besides Gluconolactone?
Melissa Officinalis Extract, Methyl Gluceth-20 and Glycereth-26. The order they are printed in on this toner's panel is the order on the box, so you can see where Gluconolactone sits relative to them. Further down the same panel: Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate and Hyaluronic Acid.
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 (18): Melissa Officinalis Leaf Extract (50%), Water, Butylene Glycol, Glycerin, 1,2-Hexanediol, Methyl Gluceth-20, Glycereth-26, Ethylhexylglycerin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Sodium Citrate, Citric Acid, Trisodium EDTA, Gluconolactone, Sodium Hyaluronate Crosspolymer, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Rosmarinic Acid, Hyaluronic Acid
Ingredient list read from inkeedecoder.com on 10 September 2026.
16 of 18 explained
- Melissa Officinalis Leaf Extract (50%) plant extract
- Lemon balm extract, a mint-family herb rich in rosmarinic acid. It is used as an antioxidant conditioning extract with a light lemon scent.
- 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.
- 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.
- 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.
- 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.
- Methyl Gluceth-20 humectant
- Methyl Gluceth-20 is a sugar-derived humectant. It holds water in the outer layer of skin and gives a smooth, cushioned slip that plain glycerin does not.
- 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.
- 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.
- 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.
- Sodium Citrate pH adjuster
- Sodium Citrate is the salt of citric acid, used as a buffer: it holds a formula at a steady pH rather than pushing it in one direction. It is also a mild chelator.
- Citric Acid pH adjuster
- Citric Acid is used in tiny amounts to bring a formula to the pH its actives need, not as an exfoliant at that level. It is an AHA, so at much higher concentrations it can also exfoliate.
- Gluconolactone exfoliant
- Gluconolactone is a PHA, the gentlest exfoliant class. Its molecule is too large to penetrate quickly, so it smooths the surface without the sting of an AHA, and it is a humectant at the same time.
4 more explained
- Sodium Hyaluronate Crosspolymer humectant
- Sodium Hyaluronate Crosspolymer is hyaluronic acid linked into a mesh. It holds water in a soft gel on the surface rather than sinking in, and it releases that water slowly through the day.
- Hydrolyzed Hyaluronic Acid humectant
- Hydrolyzed Hyaluronic Acid is hyaluronic acid cut into much shorter fragments. The smaller the fragment, the further into the outer layer it can settle, which is why serums stack several sizes together instead of using one.
- 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.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809694621261
- Made in
- Republic of Korea
- Volume
- 300 ml
- Category
- Toner
- Actives
- Hyaluronic Acid, Sodium Hyaluronate
- 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
- Sweep across a cleansed face and neck with a cotton pad or press in with clean hands, then continue with the rest of the routine without rinsing.
Worth knowing
- Patch test this toner on a small area and wait a day before using it more widely, especially with Gluconolactone on the list.
- Citric Acid and Gluconolactone on this list makes this toner an exfoliating step, so do not stack it with another one on the same night.
Complete the routine
- This itemCell Fusion C Low pH pHarrier Toner 300ml$30.00

- The last step of the morning, over everything elseCell Fusion C Laser Sunscreen SPF50+/ PA++++ 50ml$30.00

- The treatment step of this routineCell Fusion C Laser Rejuvenation Ampoule 30ml$27.50

Total for 3 items$87.50
Reviews
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Cell Fusion C Low pH pHarrier Toner 300ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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Cell Fusion C, Korean-market original
The Original Korean Formula toner from Cell Fusion C, 300ml formulated with Gluconolactone and Melissa Officinalis Extract, shipped from California or direct from Korea.
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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