COSRX
AC Collection Blemish Spot Clearing Serum
A propolis-first serum for blemish-prone skin, with niacinamide, ectoin and ceramide NP to care for marks while comforting the barrier.
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- Suited to
- DryDehydratedSensitiveCompromised barrier
- Helps with
- DehydrationBarrier weaknessBreakouts and congestionUneven tone and dullness
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
Blemish-prone skin often ends up torn between addressing active spots and calming the redness they leave behind. This serum opens on Propolis Extract, with niacinamide third, ahead of panthenol, ectoin, and the centella complex, and Ceramide NP near the end. That order pairs a soothing, barrier-minded base with niacinamide's tone-evening role rather than a harsher acid. Used consistently, marks and redness tend to look calmer without the sting some acid-forward spot products cause. Smooth a thin layer over the face or on marks after toner, morning and night, before moisturizer.
Key benefits
- Propolis extract is the first ingredient on the list
- Niacinamide sits third for a more even look where marks linger
- Ectoin comforts stressed, reactive skin
- Ceramide NP and tea tree leaf oil round out the barrier-minded base
Key actives
Propolis Extract
the soothing, nourishing base the serum is built on
Niacinamide
supports a clearer, more even look
Ectoin
a stress-shielding hydrator for reactive skin
Ceramide NP
supports the feel of an intact skin barrier
COSRX AC Collection Blemish Spot Clearing Serum
What is the AC Collection Blemish Spot Clearing Serum for?
Propolis Extract opens the list, and niacinamide sits third, ahead of panthenol and, further down, ectoin and the centella trio of asiaticoside, asiatic acid, and madecassic acid. Ceramide NP appears near the end alongside tea tree leaf oil. That order describes a serum built around a propolis and niacinamide base for blemish-prone skin, with a barrier-supporting lipid layered in behind them.
Is this serum suitable for reactive, blemish-prone skin?
The list has no fragrance, no denatured alcohol, no added silicone, no paraben, and no mineral oil. That combination suits reactive, blemish-prone skin looking for a fragrance-free, silicone-free serum rather than a heavier treatment product. Anyone managing an active, diagnosed skin condition should still read the full list above against their own known triggers.
How soon will lingering marks look better with this serum?
Niacinamide and the centella complex work toward a more even look over repeated applications rather than a single use, and ectoin's comforting effect on stressed skin follows the same pattern. Marks that have already settled tend to fade gradually across weeks of consistent morning and evening use, not overnight. Sporadic use produces a slower, less consistent result than a steady routine.
Can I layer this serum with a separate spot treatment?
Applied after toner and before moisturizer, this serum is built to sit early in a routine rather than replace a dedicated spot treatment. It can be smoothed either as a thin layer over the whole face or focused on areas with lingering marks. Whether a separate spot treatment pairs well on top depends on that product's own ingredient list, which this formula cannot speak to.
How do I check that this bottle is the genuine Korean-market AC Collection serum?
The bottle carries its original Korean-market barcode, 8809598450561, unaltered from the version sold in Korea. COSRX runs its own verification program rather than relying on a reseller's claim: the batch number and expiration date printed on your bottle can be entered on COSRX's verification page at cosrx.com. Read those two figures off the bottle in your hand, since that is what the check is actually for.
- 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 to use
- Use the AC Collection Blemish Spot Clearing Serum after toner and before moisturizer, morning and evening.
- A thin layer over the areas with marks, or over the whole face if that is where the congestion sits.
- Toner first, this second, then moisturizer, and sunscreen last in the morning.
- Twice a day. Do not use it on the marks alone and skip the rest of the routine; the moisturizer over the top is what keeps it comfortable.
Worth knowing
- Propolis and/or honey are animal-derived, so this is not a vegan formula.
Reviews
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COSRX, Korean-market original
Blemish-care serum, 40 ml, with Propolis first on the list, Niacinamide and Ectoin.
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.
COSRX verifies units itself. Find the verification page on cosrx.com and enter the batch number and expiration date printed on your unit. Read them off the package rather than from us, which is the point.
Source: COSRX FAQ
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.
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 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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