haruharu wonder Black Rice Night Knight Retinol Serum 20ml
Black Rice Night Knight Retinol Serum is a 20 ml serum from haruharu wonder, built on retinol at 0.08 percent alongside bakuchiol and adenosine, used after toner or essence and before moisturizer, best reserved for the evening given the retinol.
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- Suited to
- Dry skinCompromised barrierDehydrated skinSensitive skin
- Helps with
- Shoppers looking for Retinol in a serumRoutines that want Retinol and Bakuchiol in one stepFilling the serum step with a Korean-market formulaAnyone who wants the Retinol serum sold on Korean shelves
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- Free US shipping on orders of $100 or more
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Key benefits
- Retinol, the active this serum is built around
- Bakuchiol and Adenosine on the same list, actives
- Aspergillus Ferment on the same list, a ferment
- Ceramide NP on the same list, a barrier lipid
- Oryza Sativa (Rice) Extract and Phyllostachys Pubescens Shoot Bark Extract further down the same list
- Panax Ginseng Root Extract and Hydrogenated Polyisobutene further down the same list
Key actives
Retinolactive
Retinol is the alcohol form of vitamin A and the strongest retinoid available without a prescription. Skin converts it in two steps to retinoic acid, and it is used at night, at low percentages, for the look of fine lines and rough texture. It is the entry this serum is named after, and the list carries it.
Bakuchiolactive
Bakuchiol is a compound from the babchi seed, used as a plant-derived alternative to retinol. It is oil soluble, stable in daylight and does not carry retinol's acclimatisation period, which is why sensitive-skin formulas choose it. The panel names it seventh on this serum's list, beside Retinol.
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-first on this serum's list, beside Retinol.
Aspergillus Fermentferment
Aspergillus Ferment is a mould ferment, from the same organism family used to make soy sauce and sake. It supplies amino acids and organic acids and is used as a conditioning ferment. It is named seventeenth on this serum's list, alongside Retinol.
Ceramide NPbarrier lipid
Ceramide NP is the most used cosmetic ceramide, the same class of lipid that makes up roughly half the mortar between cells in the outer layer of skin. Added to a cream it slots into that structure, which is why ceramide formulas feel less leaky rather than merely greasy. It is named twenty-fifth on this serum's list, alongside Retinol.
How to use
- Use it after toner or essence and before moisturizer, AM and/or PM. Apply a pea-sized amount over the face, avoiding the eye area, since bakuchiol is gentler than retinol but still benefits from being introduced a few nights a week at first.
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 Retinol and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Retinol 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 Retinol?
Bakuchiol, Adenosine and Aspergillus Ferment. The order they are printed in on this serum's panel is the order on the box, so you can see where Retinol sits relative to them. Further down the same panel: Ceramide NP, Oryza Sativa (Rice) Extract and Phyllostachys Pubescens Shoot 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.
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How it works
The Black Rice Night Knight Retinol Serum is a 20ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Retinol, named sixteenth on its own ingredient list. The same list carries Bakuchiol, Adenosine and Aspergillus Ferment, so the active is not the only thing on it worth naming. How much of the Retinol 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 Haruharu sells in Korea, Retinol and all.
Worth knowing
- Patch test this serum on a small area and wait a day before using it more widely, especially with Retinol on the list.
- Retinol is on this list, so keep this serum to the evening and build the nights up slowly rather than starting nightly.
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Korean-market original
The Original Korean Formula serum from Haruharu, 20ml formulated with Retinol and Bakuchiol, 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.
Vitamin A has a molecular structure that's tiny enough to get into the lower layers of your skin, where it finds and boosts collagen and elastin, which is a protein that strengthens your skin's flexibility.
Wilma Bergfeld, MDDermatologist, Cleveland Clinic Bakuchiol is often used as a gentler alternative to retinol. It may help your skin look smoother and reduce the appearance of wrinkles.
Shilpi Khetarpal, MDDermatologist, Cleveland Clinic
1 more professional perspective
Ceramides are part fatty acid and part amino acid and are able to be the grout that keeps the building blocks of the skin together and functioning as a barrier between the inside and outside world.
Amy Kassouf, MDDermatologist, Cleveland Clinic
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