innisfree Perfect 9 Intensive Serum 50ml
Dimethicone and cyclopentasiloxane are second and third, so this 50ml serum spreads as a silicone fluid rather than a watery one. Niacinamide is eighth and adenosine twenty-first.
No reviews yet- Ships from our California warehouse
- Duties prepaid
- Suited to
- Dehydrated skinSensitive skinDull, uneven tone
- Helps with
- Shoppers looking for Niacinamide in a serumRoutines that want Niacinamide and Adenosine in one stepFilling the serum step with a Korean-market formula
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
- Niacinamide, the active this serum is built around
- Adenosine on the same list, an active
- Tocopheryl Acetate and Tocopherol on the same list, antioxidants
- Beta-Glucan on the same list, a polysaccharide
- Theobroma Cacao (Cocoa) Extract and Artemisia Vulgaris Extract further down the same list
- Houttuynia Cordata Extract and Rubus Idaeus (Raspberry) Fruit Extract 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 eighth.
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. It is named twenty-second on this serum's list, alongside Niacinamide.
Tocopheryl Acetateantioxidant
Tocopheryl Acetate is a stable vitamin E ester that skin converts to tocopherol. It is used as an antioxidant and a light emollient and holds up better than plain vitamin E in a formula. The panel names it thirteenth on this serum's list, beside Niacinamide.
Tocopherolantioxidant
Tocopherol is vitamin E. It is an oil-soluble antioxidant that protects the oils in a formula from going rancid and works on skin as an emollient, and it is regularly paired with vitamin C because each keeps the other going for longer. It is named thirty-seventh on this serum's list, alongside Niacinamide.
Beta-Glucanpolysaccharide
Beta-Glucan is a polysaccharide from oats or yeast. It holds a large amount of water, forms a soothing film, and is one of the ingredients formulators reach for in products aimed at reactive skin. The panel names it thirty-fifth on this serum's list, beside Niacinamide.
How to use
- Apply a few drops to clean skin after toner or essence and before moisturizer, morning and/or night, pressing it in rather than rubbing.
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.
Does this serum contain fragrance?
Yes. The ingredient list names Fragrance, Limonene, Linalool and Parfum. 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 Niacinamide?
Adenosine, Tocopheryl Acetate and Tocopherol. 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: Beta-Glucan, Theobroma Cacao (Cocoa) Extract and Artemisia Vulgaris 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 Perfect 9 Intensive Serum is a 50ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Niacinamide, named eighth on its own ingredient list. The same list carries Adenosine, Tocopheryl Acetate and Tocopherol, 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. innisfree sells this Niacinamide serum in Korea, and this is that version.
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, Limonene and Linalool, so skip it if fragrance components are something you avoid.
Reviews
No reviews yet. Tell us how much you love the product!
Write Reviews (opens in a new tab)Korean-market original
The Original Korean Formula serum from innisfree, 50ml formulated with Niacinamide and Adenosine, 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.
People with dry, flaky skin are more likely to see a benefit from using vitamin E because it enhances moisturization.
Amy Kassouf, MDDermatologist, Cleveland Clinic It can be especially useful for skin that is easily irritated or prone to redness, including conditions such as rosacea, eczema and contact dermatitis.
Derrick Phillips, MDConsultant dermatologist, Vogue
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
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.