isoi Bulgarian Rose Pore Tightening Control Serum 50ml
isoi Bulgarian Rose Pore Tightening Control Serum is a 50ml serum whose ingredient list carries Adenosine alongside Allantoin and Salix Nigra (Willow) Bark Extract.
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
- Adenosine, the active this serum is built around
- Allantoin on the same list, an active
- Salix Nigra (Willow) Bark Extract, Hedera Helix (Ivy) Extract and Houttuynia Cordata Extract on the same list, plant extracts
- Castanea Crenata (Chestnut) Shell Extract and Salix Alba (Willow) Bark Extract further down the same list
- Centella Asiatica Extract and Cinnamomum Cassia Bark Extract further down the same list
- Adenosine named twenty-third on the manufacturer list printed on this page
Key actives
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. On this serum's own ingredient list it is named twenty-third.
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 thirty-fourth on this serum's list, alongside Adenosine.
Salix Nigra (Willow) Bark Extractplant extract
Black willow bark extract. Willow bark carries salicin and tannins, and it is the botanical route to a salicylate rather than a synthetic salicylic acid. It is named ninth on this serum's list, alongside Adenosine.
Hedera Helix (Ivy) Extractplant extract
Ivy extract with the plant part unstated. Ivy carries saponins, which give it a mild self foaming character, and flavonoids. It is named tenth on this serum's list, alongside Adenosine.
Houttuynia Cordata Extractplant extract
Houttuynia Cordata is heartleaf, and it is one of the two or three anchor plants of Korean calming skincare. Its extract carries quercitrin and other flavonoids and is used for the look of redness and blemish-prone skin. It is named fourteenth on this serum's list, alongside Adenosine.
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 Adenosine and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Adenosine 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 Adenosine?
Allantoin, Salix Nigra (Willow) Bark Extract and Hedera Helix (Ivy) Extract. The order they are printed in on this serum's panel is the order on the box, so you can see where Adenosine sits relative to them. Further down the same panel: Houttuynia Cordata Extract, Castanea Crenata (Chestnut) Shell Extract and Salix Alba (Willow) Bark 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
We accept
How it works
The Bulgarian Rose Pore Tightening Control Serum is a 50ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Adenosine, named twenty-third on its own ingredient list. The same list carries Allantoin, Salix Nigra (Willow) Bark Extract and Hedera Helix (Ivy) Extract, so the active is not the only thing on it worth naming. How much of the Adenosine 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, Adenosine 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
No reviews yet. Tell us how much you love the product!
Write Reviews (opens in a new tab)We’re on gram!
Creators trying on authentic Korean skincare routines and products from us.
Rating a shelf of Dr. Althea products one by one.
Jasmine Loo · YouTube
Two hydrating serums side by side, IUNIK and Dr. Althea.
Kristin · YouTube
A walk through the Dr. Althea serum lineup and who each one suits.
auraofmahmuda · YouTube
A blunt first take on the Dr. Althea range.
Lexi Chang · YouTube
A first look at the viral 345 Relief Cream before buying.
Shelley Nayak · YouTube
A first try of the Dr. Althea serum on camera.
Hannah Ziad · YouTube
Korean-market original
The Original Korean Formula serum from isoi, 50ml formulated with Adenosine 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.
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 Its potential for skincare is promoted because of its anti-inflammatory (think blemishes, rashes, eczema) and hydrating properties.
Michele Koo, MDPlastic surgeon, PureWow
Ask an AI assistant about this product
Ask an AI assistant about this product
Opens ChatGPT, Perplexity or Claude in a new tab with the question prefilled. Claude asks you to sign in first.







