Cell Fusion C Glass Skin Serum 30ml
Glass Skin Serum is Cell Fusion C's toner (30ml), built around Niacinamide and Adenosine. It is used right after cleansing, to rebalance the skin and prep it for the next step. This is the same formula Korean shoppers buy off the shelf in Seoul, not a version built for US retail.
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- Suited to
- Congested skinUneven textureDehydrated skinSensitive skin
- Helps with
- Shoppers looking for Niacinamide in a serumRoutines that want Niacinamide and Adenosine in one stepFilling the serum step with a Korean-market formulaAnyone who wants the Niacinamide serum sold on Korean shelves
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You’re $100.00 away from free US shipping.
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
Key benefits
- Niacinamide, the active this serum is built around
- Adenosine on the same list, an active
- Capryloyl Salicylic Acid on the same list, an exfoliant
- Zea Mays (Corn) Kernel Extract on the same list, a plant extract
- Glycereth-25 PCA Isostearate and Arginine further down the same list
- Methyl Gluceth-20 and Hyaluronic Acid further down the same list
Key actives
Niacinamideactive
Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. On this serum's own ingredient list it is named sixth.
Adenosineactive
Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated. The panel names it twenty-third on this serum's list, beside Niacinamide.
Capryloyl Salicylic Acidexfoliant
Capryloyl Salicylic Acid is salicylic acid with a fatty tail, sometimes sold as LHA. It stays nearer the surface than salicylic acid and works at a higher pH, so it exfoliates more evenly and more gently. The panel names it thirty-fourth on this serum's list, beside Niacinamide.
Zea Mays (Corn) Kernel Extractplant extract
Corn kernel extract, mostly starch-derived sugars with some amino acids. It is used as a conditioning, water-holding extract. The panel names it twenty-second on this serum's list, beside Niacinamide.
Cetyl Ethylhexanoateemollient
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. The panel names it fifteenth on this serum's list, beside Niacinamide.
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.
Where does this serum go in my routine?
After toner and before moisturizer, morning and evening. Anything thinner than a serum 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 Niacinamide and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Niacinamide and all. We match this serum to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.
Does this serum contain fragrance?
Yes. The ingredient list names Fragrance. It sits on the panel printed on this page, so you can read the position for yourself before you buy. If fragrance components are something you avoid, this serum is not the one.
What else is on the list besides Niacinamide?
Adenosine, Capryloyl Salicylic Acid and Zea Mays (Corn) Kernel Extract. The order they are printed in on this serum's panel is the order on the box, so you can see where Niacinamide sits relative to them. Further down the same panel: Cetyl Ethylhexanoate, Glycereth-25 PCA Isostearate and Arginine.
- 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.
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How it works
The Glass Skin Serum is a 30ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Niacinamide, named sixth on its own ingredient list. The same list carries Adenosine, Capryloyl Salicylic Acid and Zea Mays (Corn) Kernel Extract, so the active is not the only thing on it worth naming. How much of the Niacinamide stays on the skin, and for how long, is decided by the serum format rather than by the list alone. This is the Original Korean Formula, the serum Cell Fusion C sells in Korea, Niacinamide and all.
Worth knowing
- Patch test this serum on a small area and wait a day before using it more widely, especially with Niacinamide on the list.
- This list names Fragrance, so skip it if fragrance components are something you avoid.
- Salicylic Acid on this list makes this serum an exfoliating step, so do not stack it with another one on the same night.
Reviews
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Korean-market original
Glass Skin Serum, 30ml, Cell Fusion C's toner with Niacinamide and Adenosine.
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.
BHAs like salicylic acid get really deep into the pores, whereas the water-soluble ones don't go as deep.
Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic 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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