KLAIRS EGF Blue AC Calming Serum 50g
A 50g calming serum for the treatment slot of a routine, aimed at skin that breaks out and looks flushed at the same time.
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- Suited to
- Normal skinCombination skinDry skinOily skin
- Helps with
- Skin that breaks outA calmer looking surfaceRedness that comes and goesEveryday treatment
In stock. Ships from our California warehouse, dispatched within 2 business days
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
This is the treatment slot of a routine, the step you choose for what you want to work on rather than for comfort alone. The fluid is light enough to spread over a whole face from a couple of pumps and settles without a residue you can feel. It stays on the skin rather than being rinsed, so the layer above it decides how long it stays comfortable. Order matters more than quantity here, and a serum belongs after the watery steps and before the rich ones. Skin that breaks out and skin that flushes easily are usually treated with products that fight each other, which is the gap a serum like this is aimed at.
Key benefits
- What it is: serum, 50g, used the treatment step after toner and before a moisturiser.
- Texture: a light fluid that turns tacky and then settles.
- Aimed at: skin that breaks out, a calmer looking surface, redness that comes and goes.
- Original Korean Formula: the version sold on Korean shelves, not a US reformulation.
Key actives
niacinamide
niacinamide is one of the most widely used tone and texture ingredients in Korean formulas, and its presence on this row's own ingredient list means it is genuinely part of the build rather than a name-only claim on the box.
allantoin
allantoin is a gentle soothing agent frequently paired with stronger actives in Korean formulas, included here to keep the routine step comfortable rather than to do the heavy lifting itself.
adenosine
adenosine is a wrinkle-care ingredient recognized in Korean cosmetic regulation. It sits on this formula's own ingredient list, which is what separates a confirmed component from a name printed on the front of the box.
Sodium Hyaluronate
Sodium Hyaluronate is the salt form of hyaluronic acid, the form most Korean formulas use for its ability to bind water at more than one molecular weight.
Capryloyl Salicylic Acid
Capryloyl Salicylic Acid is a BHA exfoliant that works inside the pore, a staple of Korean formulas built around oil control and smoother-looking texture.
What is the KLAIRS EGF Blue AC Calming Serum 50g?
It is a 50g serum used in the treatment slot of a routine, after toner and before a moisturiser, aimed at skin that both breaks out and looks flushed. It is a leave on step, so it stays under whatever follows it. One or two pumps covers a face.
Where does the serum go in my routine?
After cleansing and toner, before emulsion, cream or oil. A serum is the treatment slot, so it wants clean damp skin under it and a moisturiser over it. If you use an exfoliating step, that goes before this rather than after.
Will it pill under makeup?
It should not, provided each layer is given a moment to settle before the next one goes on. Pilling almost always comes from stacking wet on wet rather than from any single product. Press each layer in with flat palms and wait until the surface feels tacky instead of slippery.
Can I use the 50g morning and night?
Yes, twice a day is a normal way to use a serum, though once at night is enough if the rest of your routine is already long. Consistency at one time of day beats an ambitious routine you abandon after a fortnight. Judge it after four to six weeks rather than after a few days.
- 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
- Apply it on damp skin straight after toner, which is when a light fluid travels the furthest.
- Two pumps cover a face, pressed in with flat palms so nothing is dragged across the cheeks.
- Follow with a cream once the surface has turned tacky, which usually takes under a minute.
- Avoid layering three treatment serums at once, because a crowded treatment slot is where pilling and stinging start.
Worth knowing
- Introduce it on its own for a week before adding another new treatment step.
- Patch test on the jawline first if your skin reacts easily to something new.
Reviews
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Korean-market original
A 50g calming serum for the step after toner, stocked in the Original Korean Formula.
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 Hyaluronic acid helps bind water to collagen, which traps water in the skin. That helps make the skin more plump and full-looking.
Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic
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
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