9 Best Korean Serums of 2026, from $17 to $89

Seven of the nine Korean serums below are fragrance-free. The two that are not are the Medicube at $24 and the Sulwhasoo at $89.

That is the short version of what reading nine ingredient lists in a row will teach you. Price buys you texture, packaging and marketing. It does not buy you a shorter, calmer formula, and quite often it buys the opposite.

Below: what separates a serum from an ampoule, which nine are worth buying in the US right now, and what the ingredient lists say that the marketing does not.

Key takeaways

• Beauty of Joseon Glow Serum is the consensus pick at $17, and it is also the cheapest of the nine picks.
• Seven of nine are fragrance-free. Sulwhasoo at $89 carries five declared fragrance allergens.
• Four picks sit between $23.90 and $25, close enough that price is not the deciding factor.
• Serum and ampoule mean roughly the same thing on a Korean label. The word is marketing, not chemistry.

The best Korean serums at a glance

• Best overall: Beauty of Joseon Glow Serum ($17)
• Best for sensitive skin: Aestura A-Cica365 Soothing Relief Serum pH4.5 ($38)
• Best for dry skin: COSRX The 6 Peptide Skin Booster Serum ($25)
• Best for uneven tone: Medicube PDRN Pink Peptide Serum ($24)
• Best for brightening: Dr.Althea Vitamin C Boosting Serum ($23.90)
• Best for acne-prone skin: SKIN1004 Probio-Cica Intensive Ampoule ($18.70)
• Best for redness: Anua Azelaic Acid 10 Hyaluron Serum ($24)
• Best for fine lines: IOPE Expert Retinol 1% Super Bounce Serum ($49)
• Best luxury pick: Sulwhasoo First Care Activating Serum ($89)

How did we choose these nine?

About 1,600 Americans a month search for a Korean serum, and the results are thinner than the number suggests. There are two real editorial round-ups, at Allure and Byrdie. Everything else on the first page is a shop collection, a Reddit thread or a brand blog.

We started from those two, cross-checked them against what recurs in r/AsianBeauty and retailer ratings, and then read every ingredient list ourselves at INCI level rather than trusting the summary.

Three checks on every product. First, availability: it has to be buyable in the US, not only in Seoul. Second, the full published ingredient list, read to the end, because fragrance sits at the bottom. Third, the live price from the brand’s own store or a national retailer on the day of writing.

Our How We Review page covers the methodology in full.

Serum or ampoule, and does it matter?

Barely, because on a Korean label the two words describe the same kind of product: a lightweight, concentrated step that goes on after toner and before moisturizer.

The traditional distinction is that an ampoule is more concentrated than a serum, sold in a smaller bottle for a shorter course. In practice brands use whichever word suits the packaging, and the concentration claim is rarely stated as a number you can check.

Two products here make the point. SKIN1004 calls its centella product an ampoule and sells it in a 95ml bottle. Sulwhasoo calls its ginseng product a serum and charges $89. Neither name tells you anything the ingredient list does not tell you better.

Read the list, not the noun. If a formula is 43 entries long and fragrance-free, it does not become gentler because the box says ampoule.

What do the best Korean serums cost?

Nine serums, $17 to $89. That is a fivefold spread, and almost all of it comes from a single $89 outlier.

Take Sulwhasoo out and the range collapses to $17 to $49. Four of the nine sit between $23.90 and $25, close enough that price cannot decide between them. In that band you are choosing a formula, not a price. The interesting number is the one at the bottom. Beauty of Joseon at $17 is the cheapest of the nine and the most widely recommended, which is not how these lists usually go.

1. Beauty of Joseon Glow Serum: Best Overall

The Beauty of Joseon Glow Serum is the cheapest of the nine picks at $17 and the one named first most often. Allure picks it for glass skin, Google’s AI answer leads with it, and it is the top reply on the Reddit thread that ranks for this search.

The published ingredient list runs to 30 entries, built on propolis extract and niacinamide, with no fragrance and no essential oils. Propolis is the bee-derived ingredient K-beauty uses where Western brands reach for honey, and it is what gives this the slightly tacky finish people either love or do not.

On the brand’s own store it holds 4.9 stars from 1,971 reviews. One thing to check before you buy: the listed price moves. The regular price is $17 and it is often discounted below that, so the number you see may be a sale rather than the real figure.

Best for: most skin types, and anyone who wants one uncomplicated serum that does not fight the rest of the routine. Price: $17 for 30ml.

2. Aestura A-Cica365 Soothing Relief Serum pH4.5: Best for Sensitive Skin

Aestura takes first place in two different categories at once. The Korean pharmacy brand is best overall in our Korean moisturizer guide with the Atobarrier365 cream, and Allure names its A-Cica365 serum best overall in a serum list. Same brand, two categories, top of both.

The serum earns it with restraint. Thirty-two ingredients, the second shortest list here, with niacinamide sixth and the brand’s pH4.5CICA complex of centella derivatives, zinc PCA and gluconolactone behind it. No fragrance and no essential oils. It also carries the National Rosacea Society Seal of Acceptance, which is not something the other eight can say.

That pH figure matters more than it sounds. Skin sits around 4.7 to 5.75, and a product formulated to land in that range is less likely to disrupt the barrier of skin that is already reactive.

Best for: sensitive, reactive or redness-prone skin, and anyone whose barrier is currently compromised. Price: $38 for 40ml at Sephora.

3. COSRX The 6 Peptide Skin Booster Serum: Best for Dry Skin

The COSRX 6 Peptide Skin Booster Serum is the only serum here that both publications single out. Allure recommends it for a dry, dull complexion, and Byrdie names it the best Korean serum outright.

The name is literal. The ingredient list carries six peptides, including copper tripeptide-1 and acetyl hexapeptide-8, over a 44-entry base with niacinamide.

Peptides are the least dramatic active in skincare, and results take weeks to show. That is the case for this one. If your skin is dry and you have already been burned by an active that promised more, a peptide serum is the low-risk step. The peptide section below compares it with three other peptide serums.

Best for: dry or dehydrated skin, and anyone building a routine around ingredients that do not fight each other. Price: $25 for 150ml.

4. Medicube PDRN Pink Peptide Serum: Best for Uneven Tone

PDRN is the ingredient Korean skincare is currently built around, and this is the product that carried it into the mainstream. It is Allure’s choice for uneven tone, and Ulta’s own Korean routine guide names it first among serums.

Two things to get right before you buy. Medicube sells more than one version of this serum, a Rose PDRN and an Ultra Light with salmon DNA, and the names run close enough to confuse an order. Check which one the listing actually is.

The second is the formula itself. The Rose PDRN version runs to 38 ingredients, mid-pack for this list, but it is one of only two picks here that contain fragrance. That is a real trade-off in a product aimed at uneven, sensitised skin.

PDRN deserves its own guide rather than one section. Ours ranks six PDRN serums by what their labels actually disclose, and only one of them prints a figure you can check.

Best for: uneven tone and dullness, if fragrance is not something your skin objects to. Price: $24 for 30ml, reduced from $26.

5. Dr.Althea Vitamin C Boosting Serum: Best for Brightening

Vitamin C has a reputation for stinging, and most Korean formulas answer that by using gentler derivatives at lower strengths rather than the high-percentage L-ascorbic acid Western brands favour.

This is Allure’s best vitamin C pick, and the ingredient list explains why. Centella asiatica leaf water sits second, niacinamide third, across a 43-entry base with no fragrance. The vitamin C is supported rather than left to do the work alone. At $23.90 on Olive Young US it also sits in the crowded middle of this list, where four products are separated by about a dollar.

If vitamin C is the reason you are here rather than serums in general, we compared seven Korean vitamin C serums by the form each one actually uses, and one of them turns out to contain no ascorbic acid at all.

Vitamin C works hardest under a Korean sunscreen, so treat this as a morning step rather than an evening one.

Best for: dullness and uneven tone in skin that has reacted badly to stronger vitamin C. Price: $23.90 for 30ml.

6. SKIN1004 Probio-Cica Intensive Ampoule: Best for Acne-Prone Skin

SKIN1004 turns up in more of our guides than any other brand, from the cleansing oils to the sunscreens, and this is the reason: the Madagascar centella line is cheap, fragrance-free and hard to react to.

The ampoule pairs centella extract with a lactobacillus ferment, which is the probiotic angle in the name.

Forty-three ingredients, no fragrance and no essential oils, with ceramide NP and the full centella complex through the back half of the list. Allure’s tester used it on breakout-prone skin. The logic is that skin dealing with breakouts is usually also dealing with irritation from whatever is treating them, and a calming step that adds nothing sharp is more useful than another active.

Best for: acne-prone and reactive skin, especially alongside a stronger treatment elsewhere in the routine. Price: $18.70 list, sometimes discounted at Ulta.

7. Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum: Best for Redness

Azelaic acid is the active dermatologists reach for when redness and breakouts arrive together, and 10 percent is the strength most over-the-counter formulas settle on.

Anua’s version puts it second in the list, straight after water, with panthenol, betaine salicylate and ceramide NP behind it. Thirty-six ingredients, fragrance-free. The brand’s own instruction is worth repeating because it is unusually honest: apply once or twice a week at first and build up to twice daily. Azelaic acid is well tolerated but not instantly, and a product that tells you to go slowly is describing something real.

Best for: persistent redness, rosacea-prone skin, and breakouts that come with inflammation. Price: $24 for 30ml.

8. IOPE Expert Retinol 1% Super Bounce Serum: Best for Fine Lines

Retinol is the one active on this list with a genuine adjustment period, and IOPE sells it at more than one strength. Allure picks the 1%. Check the number on the bottle before ordering, because the weaker and stronger versions sit beside it on the same shelf. For retinol serums compared by cost per milliliter, see our Korean retinol serum ranking.

The formula runs 45 ingredients with squalane third, no fragrance, and none of the scent compounds that usually accompany a product at this price. At $49 it is the second most expensive pick here, and the only one where the cost is doing something you can point at. Stabilising retinol at 1% is harder than stabilising a peptide blend.

Best for: fine lines and loss of firmness, for people who have used a retinoid before. Price: $49 for 30ml.

9. Sulwhasoo First Care Activating Serum: Best Luxury Pick

At $89 the Sulwhasoo First Care Activating Serum is the most expensive serum here, and it is also the most heavily fragranced. Those two facts belong in the same sentence.

The ingredient list runs to 50 entries and includes fragrance and parfum along with five declared allergens: limonene, linalool, citral, geraniol and citronellol. Nothing here is hidden. They are printed on the label, and EU rules require them to be listed precisely because they are common triggers.

The formula itself is a ginseng and herbal blend that has been sold in some form for decades, and the ritual of it is a real part of what people pay for. Allure’s dermatologist source credits it with supporting the barrier. Buy it if you want the texture and the scent and you know your skin tolerates them. Do not buy it because $89 sounds like it must be gentler than $17. On this list, it is the opposite.

Best for: people who want the sensory experience and do not react to fragrance. Price: $89 for 60ml. The 90ml bottle is $110.

Which Korean peptide serum is best?

COSRX’s 6 Peptide Skin Booster (pick 3) for most people. It lists six named peptides plus niacinamide, and at $25 for 150ml it costs 16.7 cents per milliliter, far less than any other peptide serum we checked.

Six peptides against 48 looks like an easy win for numbuzin, but an ingredient list cannot show which kinds of peptide a formula carries or how much of each. A 2009 review in the International Journal of Cosmetic Science sorts cosmetic peptides into four groups: signal peptides, enzyme-inhibitor peptides, neurotransmitter-inhibitor peptides and carrier peptides. A 2017 review in Cosmetics uses the same four groups, describes carrier peptides as delivering trace elements such as copper, and calls the signal peptide palmitoyl pentapeptide-4 well researched. None of these four ingredient lists gives the amount of any single peptide.

Prices from each brand’s US store, retrieved October 2026. Beauty of Joseon was on sale at $13.60 and FRANKLY at $27.50 when we checked.

Medicube’s PDRN Pink Peptide Serum (pick 4) is left out of this table because it is one of the two fragranced picks; pick 4 and our PDRN ranking cover it.

The numbuzin essence is sold on volume: “50 different peptides in one bottle,” in the brand’s words. Its ingredient list does carry 48 entries named as peptides, 50 if you count carnosine and glutathione, alongside NAD+. It is also the most expensive per milliliter of the four.

If you already use a niacinamide serum, FRANKLY’s Closer is the one to look at, as the only one of the four without niacinamide. Its nine peptides sit alongside collagen and hydrolyzed collagen, and the 100ml bottle keeps the cost per milliliter in the middle of the group.

Beauty of Joseon’s serum is cheapest per bottle but not per milliliter, and it is a PDRN serum more than a peptide one: its single peptide, dipeptide diaminobutyroyl benzylamide diacetate, is the last ingredient listed. The headline is a red-bean PDRN the brand describes as vegan. Beauty of Joseon cites its own four-week study on 21 people reporting a temporary 21.47 percent improvement in pore count; that is the brand’s study, not an independent one. Pick 4 and the PDRN ranking linked there cover PDRN serums in more depth.

Peptides are slow. Give any of these several weeks of daily use before deciding, and add one new serum at a time.

How do you pick the right Korean serum for your skin?

Start with fragrance, not with the active. Seven of these nine are fragrance-free, and if your skin flares easily that single column removes two picks before you have read another word. Then match the active to the actual complaint:

• Redness: the Anua, built around azelaic acid.
• Breakouts: the SKIN1004, built around centella and probiotics.
• Dullness: the Dr.Althea, for its vitamin C.
• Fine lines: the IOPE, for its retinol.
• Firmness without retinol: a peptide serum, compared in the peptide section.
• Everything else: the Beauty of Joseon, the consensus pick and the cheapest of the nine.

If hydration is the main complaint, see our hyaluronic acid serum ranking, which counts the hyaluronate forms on six labels and compares cost per milliliter.

A serum goes on after a Korean toner and before moisturizer, thinnest texture first. That order is set out in full in our Korean skincare routine guide, and it matters more than which serum you land on. Sheet masks go on after cleansing and toning, and our ranking of five Korean sheet masks compares their cost per sheet.

One serum is enough. Two is workable if they solve different problems. Three at once is how people end up unable to say which product caused the reaction.

Frequently asked questions

What is the number one Korean serum?

By current consensus, the Beauty of Joseon Glow Serum at $17. It is Allure’s glass-skin choice, Google’s AI answer leads with it, and the Reddit thread that ranks for this search recommends it more than anything else.

It is also the cheapest of the nine here, which is unusual. Most categories put the consensus pick somewhere in the middle of the price range.

What is the difference between a serum and an ampoule?

Very little on a Korean label. The traditional distinction is that an ampoule is more concentrated and sold in a smaller bottle for a short course, but brands use whichever word suits the packaging and rarely state a concentration you can verify.

Beauty of Joseon’s Glow Serum, the consensus pick above, is a case where a brand does state one: 60% propolis extract, ahead of water in the ingredient order, which is the rare instance where the label and the INCI list actually agree.

SKIN1004 sells a 95ml bottle of what it calls an ampoule. Sulwhasoo charges $89 for what it calls a serum. Read the ingredient list rather than the noun.

What is the best Korean serum for aging skin?

The IOPE Expert Retinol 1% Super Bounce Serum at $49, if you have used a retinoid before. Retinol has the strongest evidence of anything on this list for fine lines, and IOPE sells it at more than one strength so you can start lower.

If retinol is not an option, the COSRX 6 Peptide serum is the gentler route. Peptides do not require an adjustment period.

How many serums can you use at once?

One is enough for most people. Two works if they address different concerns and neither is a strong active.

Beyond that you lose the ability to tell which product is helping and which is causing a problem, which is the same reason dermatologists advise introducing one new product at a time.

Are Korean serums different from Western ones?

Mostly in strength and texture rather than ingredients. Korean formulas tend to use gentler derivatives at lower concentrations, layered, where Western brands more often sell a single high-percentage active.

The vitamin C picks show it clearly. Dr.Althea supports its vitamin C with centella and niacinamide instead of relying on a high dose of L-ascorbic acid.

What is the best Korean peptide serum?

For most routines, COSRX’s 6 Peptide Skin Booster: $25 buys 150ml, which makes it cheaper per milliliter than the other three peptide serums compared above. Pick FRANKLY’s Closer serum if you already use niacinamide elsewhere, or numbuzin’s No.9 if you want the longest peptide list, 48 named on the label.

The bottom line

Buy the Beauty of Joseon Glow Serum at $17 if you want one answer and no research. It is the cheapest of the nine, the most recommended, and fragrance-free.

The other eight are targeted rather than better. Aestura for reactive skin, COSRX for dry, Anua for redness, SKIN1004 for breakouts, Dr.Althea for dullness, IOPE for fine lines, Medicube for tone.

The one thing worth carrying away is the pattern the ingredient lists show: the two fragranced products here are the Medicube at $24 and the Sulwhasoo at $89, and the seven fragrance-free ones include every pick under $20. Price and gentleness are not the same axis.

More reviews live in our reviews hub and the serums category.

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