Proving a bottle is what it says it is

Every reseller in this category writes the same sentence about authenticity and none of them tell you how to check. The sentence is worthless. What is worth something is the specific, physical, checkable evidence that travels with a unit: the barcode prefix, the batch or manufacture code printed on the crimp or the base, the Korean-primary packaging, and the brand-run authentication route where one exists.

Those routes are not one route. They differ per brand and they change without notice. One brand runs its own verification portal. One prints a QR code inside the box that resolves against the manufacturer. One uses a physical security label with a scannable pattern. One has discontinued consumer verification entirely and answers the question through authorised-retailer status instead. Writing a single generic sentence over four different mechanisms is the thing that makes a store sound trustworthy while telling you nothing.

So we publish the route per brand, name it, and send you to the brand to run it. A store confirming its own goods is not evidence. A manufacturer confirming a batch code is.