One Thing Houttuynia Cordata Extract
One Thing · Serum

Houttuynia Cordata Extract

Korea ranking #44 serumUS stock

A stripped-back, single-focus formula that is essentially concentrated houttuynia cordata (heartleaf) extract in a light, watery base. Heartleaf is a calming, antioxidant-rich plant long used on skin that runs hot, oily, or breakout-prone. It suits minimalists and anyone who likes to keep a routine — or a layering step — simple.

More detail

The ingredient list is just three things: houttuynia cordata (heartleaf) extract, plus butylene glycol and 1,2-hexanediol as a light humectant-and-preservative base — no fragrance, essential oils, or alcohol. Heartleaf is valued for soothing redness and irritation and for a mild antioxidant effect, which is why it's a common choice for sensitive, oily, and acne-prone skin. The texture is thin and water-like; pat it on after cleansing as a first calming, hydrating layer, or press a second layer where skin feels reactive. You can use it morning and night, and it sits easily under the rest of your routine or blended into another product. Because it's a simple extract rather than a full treatment, think of it as gentle groundwork — you'll still want a moisturizer, and sunscreen by day.

4.42,400 reviews
BEvidence grade
$13Best total · duties in
lightTexture · Serum
For: Sensitive · Oily · Combination · NormalAll tonesRedness / Rosacea-proneAcneSensitivity
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Skin fit ×45%
Evidence ×35%68
Practicality ×20%50
Ingredient check✓ all clear
Fragrance-free Fungal-acne safe No drying alcohol Essential-oil free No pregnancy-caution actives
HeartleafSoothing, antioxidant herb
Evidence checkGrade B
Grade BSolid transparency and consistent ratings; limited third-party clinical data (seed draft — verify before launch).
How grading works
Scored on clinicals · certifications · cross-platform rating consistency · transparency. Brands can't pay to change this.
What Korea says#44 serum
#44 serum · Korea ranking · Rank indicative — weekly verification pending
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Where to buybest total $13
RetailerPriceShip + dutyTotal
Amazon ✓ official
Official store — verify seller before launch
Accepts: Visa · MC · Amex · Discover · Amazon Pay · Affirm
$13$13BESTShop →
Olive Young Global ✓ official
Ships from Korea 7–14d · +15% duty
Accepts: Cards · PayPal · Apple Pay · Alipay+
$10$8.50$18.50Shop →
One Thing official ✓ official
Brand's official store, ships from Korea · +15% duty
Accepts: Cards · PayPal (varies)
$13$8.00$21Shop →

Totals include estimated import duty on Korea-shipped orders (15%, post–de minimis). Links open retailer search; exact product links are coming at launch. Payment methods indicative — verify at checkout.

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