A telling thing happened on r/koreanskincare this week: right next to a thread asking whether the Anua heartleaf cleanser is any good, someone posted photos of their own bottle and asked whether it's even real.

That pairing is the K-beauty shopping experience in 2026. Anua — the brand behind the Heartleaf 77% toner that the company markets as a best-selling toner on Amazon — is popular enough that verifying a bottle is now part of buying one. And it's not paranoia.

The counterfeit problem is real, and it got worse fast

According to Korea Customs Service data reported by The Korea Herald, losses from counterfeits targeting Korean beauty brands reached 22 billion won (about $15.1 million) in 2025 — a roughly 24-fold jump from the year before. The most-seized fakes weren't luxury goods, either: affordable, viral brands like Manyo topped the seizure list, ahead of premium Sulwhasoo. The same report describes a raid in Foshan, China that turned up 56,000 counterfeit items imitating trending Korean skincare brands.

Counterfeiters follow attention. The brands most likely to be faked are exactly the ones your feed keeps recommending.

And the marketplaces where most of us shop are where fakes concentrate. A Which? investigation covered by TheIndustry.beauty bought 34 beauty products from third-party sellers on Amazon, eBay, TikTok Shop, and Vinted and judged 23 of them likely counterfeit — including five of six bought on TikTok Shop. That study tested Western brands like CeraVe and The Ordinary, not K-beauty, but the mechanism is identical: third-party marketplace sellers are where the risk lives.

Why it matters beyond wasted money: Anua's own anti-counterfeit guide says laboratory testing of fake skincare has turned up unauthorized ingredients such as hydroquinone — a skin-lightening agent that's restricted in many countries. A fake cleanser isn't a cheaper cleanser. It's an unknown formula in a familiar bottle.

How to check a bottle you already have

Anua published an official guide to spotting fakes, which is worth reading in full if you're staring at a suspicious pump bottle. The short version, plus context:

  • Check the barcode — but don't stop there. Barcodes registered in South Korea start with the GS1 prefix 880. A non-880 barcode on a "made in Korea" product is a red flag. But counterfeiters can print barcodes too; as Anua's guide itself puts it, "a barcode alone does not prove authenticity."
  • Scan the HiddenTag, if there is one. Some Korean brands use HiddenTag security labels — an encrypted code you verify in the dedicated HiddenTag app, not your phone's regular camera. A fake label can pass a casual camera scan; the app is the point.
  • Look at the typography and labeling. Per Anua's guide, genuine packaging uses fine, thin fonts and carries full ingredient lists in both Korean and English. Counterfeits tend toward bolder, thicker print and abbreviated labels.
  • Smell it — carefully. Genuine Anua heartleaf products are described by the brand as scentless or faintly herbal and earthy. A strong chemical, alcohol, or perfume smell is a warning sign. And if you already strongly suspect a fake, don't patch test it to find out — bin it.

None of these checks is conclusive alone. Together, they'll catch most fakes.

The better fix: buy where fakes can't easily enter

Every verification trick above is a fallback. The reliable move is upstream — buy from channels where the supply chain is controlled:

  • The brand's own store. Anua.com ships directly, and Anua maintains a distributor locator for authorized sellers by country.
  • Major authorized retailers. In the US, Ulta Beauty carries Anua — a chain retailer stocking from the brand is about as low-risk as it gets. We covered the Ulta relationship when the Anua × KPop Demon Hunters collab launched there.
  • On Amazon and TikTok Shop, check the seller — not the listing. Anua runs an official Amazon storefront. The product photo tells you nothing; the "sold by" line tells you almost everything. A slightly-off seller name with few reviews and a price well below everyone else's is the classic pattern.
  • Treat deep discounts on viral products as a cost, not a saving. Legitimate K-beauty promotions are frequent and generous. A hyped product at half the going rate from an unknown seller is how most fake purchases start.

The honest take

The counterfeit surge is the tax on K-beauty's success: when a category grows this fast, gray-market sellers grow with it. It shouldn't scare you off the category. It should just change your default: the question isn't "is this product good?" anymore, it's "is this seller real?" Answer the second question first, and the barcode checks become something you'll rarely need.

This article is independent editorial by Seoul Glow; no brand paid for or reviewed it. It is not medical advice — if a product has caused a reaction, stop using it and consult a dermatologist.