Centellian24
Madeca Vitamin 15+ Glowing Serum 30ml
Niacinamide is second and 3-O-ethyl ascorbic acid third on this 30 ml serum's own list, with ascorbyl glucoside sixth and glutathione further down: the Korean-market brightening step, a light fluid that dries fast under a moisturizer.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- Congested skinUneven textureDry skinCompromised barrier
- Helps with
- Shoppers looking for Niacinamide in a serumRoutines that want Niacinamide and Allantoin in one stepFilling the serum step with a Korean-market formulaAnyone who wants the Niacinamide serum sold on Korean shelves
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
The Madeca Vitamin 15+ Glowing Serum is a 30ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Niacinamide, named second on its own ingredient list. The same list carries Allantoin, Adenosine and Asiaticoside, 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 Centellian24 sells in Korea, Niacinamide and all.
Key benefits
- Niacinamide, the active this serum is built around
- Allantoin, Adenosine, Asiaticoside and Madecassic Acid on the same list, actives
- Asiatic Acid and Dipotassium Glycyrrhizate further down the same list
- Gluconolactone and Salicylic Acid further down the same list
- Niacinamide named second on the manufacturer list printed on this page
- The Korean-market release of this serum, confirmed against its Korean barcode
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 second.
Allantoinactive
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. It is named twenty-fourth on this serum's list, alongside Niacinamide.
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-seventh on this serum's list, beside Niacinamide.
Asiaticosideactive
Asiaticoside is one of the four active triterpenes isolated from centella and the most studied of them. Korean formulas name it separately when they want to show which fraction of the plant they standardised. The panel names it thirty-first on this serum's list, beside Niacinamide.
Madecassic Acidactive
Madecassic Acid is the fourth centella triterpene. A list that names all four is telling you the extract was standardised rather than simply pressed, which is the difference between a cica claim and a cica formula. The panel names it thirty-second on this serum's list, beside Niacinamide.
Centellian24 Madeca Vitamin 15+ Glowing Serum 30ml
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.
What else is on the list besides Niacinamide?
Allantoin, Adenosine and Asiaticoside. 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: Madecassic Acid, Asiatic Acid and Dipotassium Glycyrrhizate.
- 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.
Payment and security
We accept
How to use
- Use it in the morning after toner and before moisturizer.
- A few drops pressed over the face rather than smoothed on thinly.
- There is alcohol high on this list, so follow it with a richer cream on dry skin instead of a light one.
- Every morning, and keep sunscreen as the last step after it.
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.
- Gluconolactone and 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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Centellian24, Korean-market original
Vitamin serum, 30 ml, with Niacinamide, Ethyl Ascorbic Acid and Tocopherol.
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.
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 Centella can make your skin appear more hydrated, plumper and healthier.
Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic
1 more professional perspective
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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