Mugwort & Heartleaf in Korean Skincare: The Calming Botanicals Explained
By Dr. Soo-Jin Kim · Seoul Cosmetic Chemist & Senior Editor, K-Ingredient
Updated Jun 2026This article is for general education, not medical advice. Mugwort (Artemisia) is in the ragweed/daisy (Asteraceae) family, so people with ragweed allergies can react to it. Patch-test any new mugwort or heartleaf product on your inner arm for 24 hours before using it on your face. If you have a skin condition, see a dermatologist. Affiliate disclosure: K-Ingredient may earn a commission on purchases through links here. We translate Korean-language product and ingredient data directly from manufacturer pages, Olive Young (올리브영), and Hwahae (화해); pricing reflects KRW retail at June 2026.
Quick Answer
- Mugwort (Artemisia/쑥) calms redness; key actives are eupatilin and jaceosidin.
- Heartleaf (Houttuynia cordata/어성초) soothes oily, acne-prone, reactive skin.
- Both are antioxidant and anti-inflammatory; centella is the gentler third option.
- Korean brands sell mugwort essences and heartleaf toners at 70-90% extract.
Disclosure: this article contains affiliate links — we may earn a commission on qualifying purchases at no extra cost to you.
This article is for general education, not medical advice. Mugwort (Artemisia) is in the ragweed/daisy (Asteraceae) family, so people with ragweed allergies can react to it. Patch-test any new mugwort or heartleaf product on your inner arm for 24 hours before using it on your face. If you have a skin condition, see a dermatologist. Affiliate disclosure: K-Ingredient may earn a commission on purchases through links here. We translate Korean-language product and ingredient data directly from manufacturer pages, Olive Young (올리브영), and Hwahae (화해); pricing reflects KRW retail at June 2026.
Walk down any Olive Young aisle in Seoul and two plants keep showing up. Mugwort. Heartleaf. They sit next to the centella creams, but they're not the same thing. Each does a different job on irritated skin.
I've translated Korean ingredient lists since 2019. These two botanicals get lumped together as "soothing herbs" in English marketing. That's lazy. The actives are different. The skin types they suit are different. Here's the real breakdown.
What is mugwort (Artemisia) in Korean skincare?
Mugwort is Artemisia, a genus of aromatic plants Koreans call 쑥 (ssuk). It has been used in Korean folk medicine and food for centuries, including in moxibustion and in rice cakes. In skincare it shows up as Artemisia princeps or Artemisia vulgaris leaf extract.
The plant earns its place because it's loaded with flavonoids and antioxidants. Korean formulators prize it for calming visible redness and supporting a stressed barrier. Most premium mugwort products use a high percentage of extract, sometimes the whole formula's water phase.
There's a cultural reason mugwort feels so trustworthy to Korean shoppers. It's an everyday plant, eaten in soups and rice cakes and burned in moxibustion. That familiarity gives it a "grandmother's remedy" halo that marketing leans on hard. The science is more modest than the halo, but the antioxidant load is real.
One more practical note. Mugwort extracts often carry a green, herbal scent and a faint tingle on application. For most people that's fine and even pleasant. For genuinely reactive skin it can be a flag, which is why patch-testing matters more here than with a neutral humectant.
What is heartleaf (Houttuynia cordata)?
Heartleaf is Houttuynia cordata, a heart-shaped leaf Koreans call 어성초 (eoseongcho), which roughly translates to "fishy-smell herb." The raw plant has a strong smell, though purified extracts in cosmetics are usually deodorized. It grows across Korea, China, and Japan and has a long history in East Asian traditional medicine.
In K-beauty, heartleaf is the go-to for oily, blemish-prone, and reactive skin. It's water-light and tends to feel less rich than mugwort. Brands market it for "trouble" skin, the Korean shorthand for breakouts plus redness.
Heartleaf's rise in the West is recent and fast. A single viral toner pulled the ingredient out of obscurity and onto TikTok shelves in two years. Before that, most English-speaking shoppers had never heard the word. Koreans had been using 어성초 for far longer, in teas and topical remedies.
What makes it formulator-friendly is the texture. Heartleaf "water" behaves like a thin essence, absorbs fast, and leaves no film. That suits the humid, layered Korean routine where you stack several watery steps before any cream.
How do mugwort and heartleaf work on skin? (mechanisms)
Both plants calm skin through overlapping but distinct chemistry. Mugwort's signature compounds are eupatilin and jaceosidin, two flavones. Eupatilin is the heavily studied one; lab work links it to reduced inflammatory signaling and antioxidant activity (Jeong et al., Archives of Pharmacal Research, 2015, PubMed).
Eupatilin appears to dial down pro-inflammatory pathways like NF-κB and cut reactive oxygen species. In plain terms, it tells skin to stop overreacting. That's why mugwort reads as "calming" on a flushed, sensitized face.
Heartleaf works through a different cast of actives: quercetin, quercitrin, and other flavonoids plus volatile compounds. These give it antioxidant, antimicrobial, and anti-inflammatory action (Wu et al., Pharmaceutical Biology, 2021, PubMed).
The antimicrobial angle matters for acne. Houttuynia extract has shown activity against bacteria and helps balance an oily, congestion-prone face. Quercetin also mops up free radicals, which is the antioxidant half of the story.
So: mugwort leans antioxidant-and-anti-redness. Heartleaf leans antioxidant-anti-redness plus oil-and-microbe control. That single difference drives most of the product choices below.
What does the clinical/lab evidence show?
Most of the strong evidence is preclinical, meaning lab dishes and animal models, not large human face trials. That's an honest caveat. For mugwort, eupatilin has documented anti-inflammatory and gastroprotective effects in research, and topical Artemisia extracts show antioxidant and skin-soothing activity (review via PubMed search, Artemisia skin, 2020).
For heartleaf, the evidence base is broader because the plant is medicinally important across Asia. Studies document anti-inflammatory, antioxidant, and antimicrobial action, with some work on atopic-dermatitis-type inflammation models (Houttuynia cordata review, Journal of Ethnopharmacology, 2013, PubMed).
What this means for your bathroom shelf: both ingredients have real mechanistic support for soothing and antioxidant claims. Neither has the depth of human cosmetic-trial data that, say, niacinamide or retinoids have. Treat them as well-supported botanical calmers, not as drugs.
It's also worth flagging that extract quality varies wildly. A "Houttuynia cordata extract" at 0.1% buried at the bottom of an ingredient list is not the same input as a 77% heartleaf-water base. The research tests defined doses; marketing rarely matches them.
Mugwort vs heartleaf vs centella — which calming actives for which skin?
Think of these three as a calming trio with different personalities. Centella (cica) is the all-rounder for barrier repair and post-procedure skin. Mugwort is the antioxidant-rich pick for dry-to-normal, red, reactive skin. Heartleaf is the lightweight choice for oily, breakout-prone, reactive skin.
Here's the head-to-head.
Calming Botanical Comparison
| Botanical | Korean name | Key actives | Best for | Texture/feel | Primary action |
|---|---|---|---|---|---|
| Mugwort (Artemisia) | 쑥 (ssuk) | Eupatilin, jaceosidin, flavonoids | Red, dry-to-normal, sensitized skin | Often richer, herbal, can be slightly tingly | Antioxidant + anti-redness |
| Heartleaf (Houttuynia cordata) | 어성초 (eoseongcho) | Quercetin, quercitrin, volatile oils | Oily, acne/trouble-prone, reactive skin | Water-light, fast-absorbing | Antioxidant + antimicrobial + soothing |
| Centella (cica) | 병풀 (byeongpul) | Madecassoside, asiaticoside, asiatic acid | Compromised barrier, post-laser, rosacea | Ranges gel to balm | Barrier repair + wound-soothing |
A quick rule I give friends: if your skin is red and tight, reach for mugwort or centella. If your skin is red and greasy with bumps, reach for heartleaf. If your barrier is genuinely broken, centella first.
Actives Breakdown by Compound
| Compound | Found in | Class | Documented action |
|---|---|---|---|
| Eupatilin | Mugwort (Artemisia) | Flavone | Anti-inflammatory, antioxidant |
| Jaceosidin | Mugwort (Artemisia) | Flavone | Anti-inflammatory, antioxidant |
| Quercetin | Heartleaf | Flavonoid | Antioxidant, anti-inflammatory |
| Quercitrin | Heartleaf | Flavonoid glycoside | Antioxidant, antimicrobial support |
| Madecassoside | Centella | Triterpenoid glycoside | Wound-soothing, barrier support |
What concentrations / extract forms matter?
The number that matters most is what replaces the water. Premium Korean calming products often swap plain water for a high percentage of botanical extract, listed first on the ingredient label. I'm From's mugwort line, for example, is built around a very high mugwort-extract base sourced from Ganghwa Island (강화도).
For heartleaf, look for products that list Houttuynia cordata extract or "heartleaf water" near the top, often quoted around 70-90%. Anua built its hit toner on a roughly 77% heartleaf base, which is why it reads so light and works for oily skin.
Form matters too. You'll see leaf extract, fermented extract, distilled "water," and essential-oil fractions. Fermentation can boost some actives and smooth the feel. Essential-oil fractions carry more of the scent compounds, which is also where fragrance sensitivity can creep in.
Don't fixate on percentage alone. A well-formulated 50% extract with supporting humectants can outperform a poorly buffered 90% one. But a single-digit percentage parked at the bottom of the list is mostly there for the label.
Which Korean mugwort & heartleaf products are worth knowing?
A few lines define these categories on Olive Young and Hwahae rankings. I'm From popularized the mugwort essence format with its Ganghwa-sourced extract. SKIN1004 brings a centella-house perspective and has expanded into broader soothing actives. Round Lab leans into clean, regional-sourcing stories across its soothing range.
On the heartleaf side, Anua's Heartleaf 77% Soothing Toner became the viral reference product and pushed heartleaf into Western feeds. Abib's Heartleaf line, including its spot pads, is the other big name shoppers reach for. Both sit near the top of Hwahae's soothing-category conversation.
Prices below are KRW retail; check current Olive Young listings, since promotions shift weekly.
Notable Korean Mugwort & Heartleaf Products
| Product | Botanical | Approx. extract | Price (KRW) | Source |
|---|---|---|---|---|
| I'm From Mugwort Essence | Mugwort | High mugwort base (Ganghwa) | ~32,000 | Olive Young / brand .kr |
| Anua Heartleaf 77% Soothing Toner | Heartleaf | ~77% | ~22,000 | Olive Young |
| Abib Heartleaf Spot Pad | Heartleaf | High heartleaf base | ~30,000 | Olive Young / Hwahae |
| Round Lab soothing range | Mugwort/centella | Varies | ~20,000-28,000 | Olive Young |
| SKIN1004 soothing line | Centella/botanical | Varies | ~18,000-30,000 | Olive Young |
No single brand should dominate your routine. Pick by skin type, not by hype.
Layering tip: a heartleaf toner first, then a mugwort essence on red patches, then a centella cream to seal works for combination skin that's both oily and reactive. Patch-test the mugwort step if you're ragweed-sensitive.
Korean source attribution and translation note
Two of the best places to sanity-check what Koreans actually buy are Hwahae (화해), the ingredient-analysis and review app, and Olive Young (올리브영), the dominant K-beauty retailer whose "Best" rankings track real sell-through. Both run in Korean; I translate the category labels and percentages directly, since English product pages often drop the extract figures.
For the traditional-medicine and sourcing context, brand pages like I'm From's Korean site document the Ganghwa Island (강화도) mugwort sourcing that English listings summarize as "Korean mugwort." When I cite a Korean percentage or claim, I'm reading the 화해 ingredient breakdown or the 올리브영 product page, not a translated marketing blurb, because the two frequently disagree.
Frequently Asked Questions
Is mugwort safe if I have a ragweed or pollen allergy? Be cautious. Mugwort (Artemisia) is in the Asteraceae family alongside ragweed and daisies, so cross-reactivity is possible. Patch-test for 24 hours and stop if you see itching or hives.
Can I use mugwort and heartleaf together? Yes, many people layer a heartleaf toner under a mugwort essence. They target slightly different concerns, oil-control versus antioxidant calming, so they complement each other. Patch-test first if your skin is very reactive.
Does heartleaf help with acne? It can support clearer skin. Houttuynia cordata shows antimicrobial and anti-inflammatory action in lab studies, which fits oily, breakout-prone skin. It's a supportive ingredient, not a replacement for a proven acne treatment.
Is mugwort or heartleaf better than centella? None is strictly better; they suit different skin. Centella is best for a damaged barrier or post-procedure skin, mugwort for red dry-to-normal skin, and heartleaf for oily reactive skin. Many routines use more than one.
Why does some heartleaf product smell fishy? Raw Houttuynia cordata has a strong odor, which is why its Korean name means "fishy-smell herb." Cosmetic extracts are usually deodorized, so finished products smell mild or lightly herbal.
Related Reading
- Korean Centella vs Western Cica Creams
- Best Korean Products for Rosacea and Redness
- Best Korean Skincare for Sensitive, Reactive Skin
- New K-Beauty Ingredient Trends Emerging in 2026
Mugwort and heartleaf aren't interchangeable. One is your antioxidant red-skin calmer. The other is your light, oil-balancing soother. Match the plant to the problem and these signature Korean botanicals earn their shelf space.
-- The K-Ingredient Team