Isntree
C-Niacin Toning Ampoule
C-Niacin Toning Ampoule is Isntree's concentrated, fast-absorbing booster, formulated for dullness and an uneven-looking tone. Built around Hippophae Rhamnoides Fruit Extract and Niacinamide, it is aimed at dehydration and tight-feeling skin and dullness and uneven texture.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- Dehydrated skinSensitive skinDull, uneven tone
- Helps with
- Shoppers looking for Niacinamide in an ampouleRoutines that want Niacinamide and Dipotassium Glycyrrhizate in one stepFilling the ampoule step with a Korean-market formulaAnyone who wants the Niacinamide ampoule sold on Korean shelves
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- Duties prepaid
- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
The C-Niacin Toning Ampoule is a 50ml ampoule, used after toner and before moisturizer, morning and evening. The active it is built around is Niacinamide, named seventh on its own ingredient list. The same list carries Dipotassium Glycyrrhizate, Allantoin and Bioflavonoids, 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 ampoule format rather than by the list alone. This is the Original Korean Formula, the ampoule Isntree sells in Korea, Niacinamide and all.
Key benefits
- Niacinamide, the active this ampoule is built around
- Dipotassium Glycyrrhizate and Allantoin on the same list, actives
- Bioflavonoids and 3-O-Ethyl Ascorbic Acid on the same list, antioxidants
- Beta-Glucan and Hippophae Rhamnoides Fruit Extract further down the same list
- Aloe Barbadensis Leaf Extract and Melia Azadirachta Leaf Extract further down the same list
- Niacinamide named seventh on the manufacturer list printed on this page
Key actives
Niacinamideactive
Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. On this ampoule's own ingredient list it is named seventh.
Dipotassium Glycyrrhizateactive
Dipotassium Glycyrrhizate is a water-soluble salt derived from licorice root. The panel names it fifteenth on this ampoule's list, beside Niacinamide.
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. The panel names it twenty-sixth on this ampoule's list, beside Niacinamide.
Bioflavonoidsantioxidant
Bioflavonoids is a collective declaration for the flavonoid fraction of a plant extract, usually citrus. It names a class of plant antioxidants rather than one compound. The panel names it twenty-fourth on this ampoule's list, beside Niacinamide.
3-O-Ethyl Ascorbic Acidantioxidant
3-O-Ethyl Ascorbic Acid is a stable vitamin C derivative that skin converts to ascorbic acid. It survives in a formula far better than pure vitamin C and works at a gentler pH, so it suits skin that finds the pure acid uncomfortable. The panel names it twenty-ninth on this ampoule's list, beside Niacinamide.
Isntree C-Niacin Toning Ampoule
Where does this ampoule go in my routine?
After toner and before moisturizer, morning and evening. Anything thinner than an ampoule 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 ampoule or a US version?
The Korean-market one, Niacinamide and all. We match this ampoule 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?
Dipotassium Glycyrrhizate, Allantoin and Bioflavonoids. The order they are printed in on this ampoule's panel is the order on the box, so you can see where Niacinamide sits relative to them. Further down the same panel: 3-O-Ethyl Ascorbic Acid, Beta-Glucan and Hippophae Rhamnoides Fruit Extract.
- 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
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How to use
- Use the C-Niacin Toning Ampoule after toner and before moisturizer, morning and evening.
- Half a dropper, or two or three drops, is the amount for a whole face. Press it in rather than spreading it thin.
- It sits between the toner and the moisturizer, and it is the layer most worth leaving alone for a minute before anything covers it.
- Twice a day, every day. Do not use it as a spot application on one area; an ampoule is a routine step, not a targeted dose.
Worth knowing
- Patch test this ampoule on a small area and wait a day before using it more widely, especially with Niacinamide on the list.
- Introduce this ampoule on its own for the first week, so anything your skin does is traceable to the Niacinamide rather than to three changes at once.
Reviews
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Isntree, Korean-market original
The Original Korean Formula ampoule from Isntree, 50ml formulated with Niacinamide and Dipotassium Glycyrrhizate, held in the United States and shipped domestically.
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.
It contains liquiritin, an active compound that helps to disperse and remove existing melanin in the skin.
Jennifer Chwalek, MDDermatologist, Byrdie 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
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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