isoi Blemish Care Up Serum 15ml
isoi Blemish Care Up Serum is a 15ml serum with Arbutin, used after toner and before moisturizer, morning and evening.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- Oily skinCombination skinBlemish-prone skin
- Helps with
- Skin that looks congested or blemish-proneFitting a Korean-market step into an existing routineShoppers who want the same formula sold on shelves in Korea
In stock. Ships from our California warehouse, dispatched within 2 business days
You’re $100.00 away from free US shipping.
- Duties prepaid
- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
Key benefits
- Arbutin, the active this serum is built around
- Allantoin on the same list, an active
- Hippophae Rhamnoides Fruit Extract, Euterpe Oleracea (Acai) Fruit Extract and Vaccinium Angustifolium Fruit Extract on the same list, plant extracts
- Vaccinium Macrocarpon (Cranberry) Fruit Extract and Rhodiola Rosea Root Extract further down the same list
- Sophora Flavescens Root Extract and Salix Nigra (Willow) Bark Extract further down the same list
- Arbutin named fifth on the manufacturer list printed on this page
Key actives
Arbutinactive
Arbutin is the naturally occurring form of the same compound, from bearberry and related plants, used for the look of uneven tone. The alpha isomer is the more stable of the two. On this serum's own ingredient list it is named fifth.
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 nineteenth on this serum's list, alongside Arbutin.
Hippophae Rhamnoides Fruit Extractplant extract
Sea Buckthorn Fruit Extract is high in vitamin C and carotenoids, which give it a strong orange colour. It is used as an antioxidant extract. It is named ninth on this serum's list, alongside Arbutin.
Euterpe Oleracea (Acai) Fruit Extractplant extract
Acai fruit extract, from the Amazonian palm berry. It carries anthocyanins, the same purple pigment polyphenols found in blueberry, and is used as a plant antioxidant. The panel names it tenth on this serum's list, beside Arbutin.
Vaccinium Angustifolium Fruit Extractplant extract
Lowbush blueberry fruit extract, high in anthocyanins. Berry extracts are used as plant antioxidants and can tint a formula. The panel names it eleventh on this serum's list, beside Arbutin.
How to use
- Apply morning and night after toner or essence and before moisturizer, pressing a small amount into the skin and letting it absorb fully before the next step.
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 Arbutin and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Arbutin 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 Citronellol and Geraniol. They sit 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 Arbutin?
Allantoin, Hippophae Rhamnoides Fruit Extract and Euterpe Oleracea (Acai) Fruit Extract. The order they are printed in on this serum's panel is the order on the box, so you can see where Arbutin sits relative to them. Further down the same panel: Vaccinium Angustifolium Fruit Extract, Vaccinium Macrocarpon (Cranberry) Fruit Extract and Rhodiola Rosea Root 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 it works
The Blemish Care Up Serum is a 15ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Arbutin, named fifth on its own ingredient list. The same list carries Allantoin, Hippophae Rhamnoides Fruit Extract and Euterpe Oleracea (Acai) Fruit Extract, so the active is not the only thing on it worth naming. How much of the Arbutin 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 isoi sells in Korea, Arbutin and all.
Worth knowing
- Introduce any new product gradually rather than adding several new steps to a routine at once, so a reaction is easy to trace back to the right cause.
- Patch test on a small area first and wait a day before applying it to the full face, especially the first time you use it.
Reviews
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Korean-market original
The Original Korean Formula serum from isoi, 15ml formulated with Arbutin and Allantoin, 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.
Arbutin works to inhibit tyrosinase, an enzyme present in melanocytes, the pigment-producing cells in the skin. This results in less pigment, dark spots and skin lightening.
Tiffany Jow Libby, MDBoard-certified dermatologist, mindbodygreen 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
These mechanisms not only reinforce barrier function but also mitigate inflammation and accelerate healing.
Yang TangAssistant Professor, Beijing University of Chinese Medicine, Frontiers in Pharmacology
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