SeoulDesk
May 22, 2026 · Mina

Anua: The Heartleaf Brand Quietly Reshaping Toner Shelves in 2026

The first time I noticed Anua had truly arrived, I was standing in line at the Olive Young on Garosu-gil behind two American tourists in matching bucket hats. One of them was holding three bottles of the Heartleaf 77% Soothing Toner like a bouquet. The other was on FaceTime with what I assumed was her sister, narrating the shelf in real time. “They have the green one. They have the big green one. Should I get two?” The cashier, who I’ve seen rotate through at least four brand campaigns this year, didn’t even look up.

That was last September. By February of this year, the same toner was sold out on three of the four U.S. retailers I check when readers email me asking where to find it. Anua, a brand most Western consumers couldn’t have named in 2022, has done something I find genuinely interesting in a crowded category: it built a quiet empire on a single ingredient, and it did it without ever quite feeling like a viral brand.

The Heartleaf Question

Let’s start with the plant, because the entire brand rests on it. Heartleaf (어성초 eo-seong-cho), known to botanists as Houttuynia cordata, is a creeping herb that grows in damp shade across Korea, Japan, and parts of southern China. My grandmother used to boil it into a tea she swore by for “내열 nae-yeol” — internal heat, the traditional Korean diagnosis for anything from a stubborn pimple to a bad mood. In Korean folk medicine, it has been used for centuries as an anti-inflammatory and a detoxifying agent. The smell, if you’ve ever brewed it, is something between damp earth and raw fish. Not pleasant. But effective in a way that older Koreans treat as obvious.

What Anua did — and what almost no other brand had done with this level of commitment — was build their entire essence-toner formula around an extremely high concentration of heartleaf extract. Seventy-seven percent, hence the name. For comparison, most “centella toners” or “mugwort toners” on the Korean market hover around twenty to forty percent of their hero ingredient, with the rest being water, glycerin, and a handful of supporting actives.

The Heartleaf 77% Soothing Toner is not a complicated formula. It is essentially heartleaf extract, a small amount of panthenol, a touch of allantoin, and the kind of clean preservation system that lets sensitive skin tolerate it daily. There’s no fragrance. No essential oils. No fermented anything trying to do six jobs at once. It is, in the most literal sense, a single-purpose product that does its job and then gets out of the way.

Why Toners Got Confusing in the First Place

To understand why Anua’s restraint feels like a relief, you have to understand what happened to the toner category in the late 2010s. Korean toners had always been a step somewhere between Western astringent toners and a true hydrating essence — the marketers eventually settled on the awkward portmanteau “essence-toner” to describe them. Then around 2018, brands started loading them with everything: ten kinds of acids, eight types of ferments, niacinamide stacked with arbutin stacked with retinol derivatives.

The problem, as anyone with reactive skin can tell you, is that a product trying to exfoliate and hydrate and brighten and treat acne simultaneously usually does none of those things well, and frequently irritates the skin on the way through. My friend Yuna, who runs a small ceramics studio in Seongsu and has the kind of skin that flushes if you say the wrong thing to her, gave up on Korean toners entirely for two years around 2020. She kept it simple with thermal water spray and a French moisturizer. When she finally tried the Anua toner in late 2023, she texted me a photo of her cheek with the caption: “nothing happened.” Meaning: no sting, no rash, no tightness. For her, that was the highest possible praise.

A toner that does one thing well is not a humble product. In a category drunk on multitasking, it is a kind of quiet argument about what skincare is for.

The Brand Itself, and What It Isn’t

Anua is owned by a Korean company called Cosmorning, founded around 2018, which positions itself as a derma-focused house. The branding is deliberately minimal: matte glass bottles, sans-serif type, a color palette that telegraphs “clinical but warm.” It is, in other words, designed to look exactly like a brand a thoughtful Western consumer would trust on a Sephora shelf.

What I appreciate about Anua, having now used a rotating cast of their products for two years, is that they have resisted the temptation to launch fifty SKUs in eighteen months. There is the heartleaf line, a peach niacinamide line aimed at brightening, an azelaic acid serum for blemish-prone skin, a few cleansers, and a small handful of moisturizers and masks. Compared to brands that release a new “viral” hero every quarter, Anua’s pace is almost old-fashioned.

This matters because it tells you something about formulation philosophy. A brand that releases six products a year is making bets it can defend. A brand that releases sixty is mostly chasing a feed.

What’s actually good (and what isn’t)

Not everything Anua makes is essential. The Heartleaf Pore Control Cleansing Oil is excellent — genuinely one of the better oil cleansers I’ve used at any price — and the Peach 70 Niacinamide Serum is a pleasant, low-stakes brightener that plays well under sunscreen. The toner pads version of the heartleaf formula is convenient but, in my view, a slight downgrade from the liquid, because the textile carrier introduces a faint scratchiness you don’t get when you press the toner in with your palms.

The body care line, which launched last year, is fine. It is not the reason to know this brand.

How It’s Reshaping Shelves

The thing I keep noticing in 2026 is how Anua has changed what sits next to it. At Olive Young, the heartleaf section has tripled in size since 2023. Abib, Skin1004, Round Lab, Beauty of Joseon — most of the brands now competing for the “calm, single-hero, derma-adjacent” shelf — have either reformulated existing products to lean harder into one ingredient or launched direct competitors with names that explicitly cite a percentage. (The “X percent Y” naming convention is now so widespread it has begun to feel like a tic.)

In the U.S., the shift has been even more visible. Three years ago, the K-beauty section at a typical Target was dominated by sheet masks and snail mucin. Now you’ll find Anua, Beauty of Joseon, and Skin1004 occupying the prime eye-level real estate, often in tighter, more editorial-looking shelf sets. The category has matured, and Anua is one of the reasons.

Whether this is a good thing depends on whether you believe the heartleaf trend will follow the centella trend — which started as a derma-credible ingredient and ended up in everything from lip balms to dish soap before consumers tuned out — or whether it will hold its credibility longer because the formulations have, so far, mostly remained focused.

I lean cautiously optimistic. The science on Houttuynia cordata as an anti-inflammatory is decent, if not exhaustive, and the texture of these toners is genuinely pleasant for the kind of compromised, post-acid, post-retinoid skin a lot of us have in our late twenties and thirties.

What I Keep on My Counter

If you are coming to Anua fresh and want to understand why people care, here is where I’d start. None of these are sponsored. All of them are in regular U.S. distribution as of this spring.

If you only buy one, buy the toner. The rest can wait until you know what your skin actually wants.

— Mina