To be sure, there are fake Korean makeup online, such as some series that don't exist at all, or series that have been sold for a long time.

Because of the exchange rate, some Korean cosmetics are not expensive ~, TFS, SKINFOOD and Aili are mostly tens of dollars or more 100, and nail polish is probably from 7 yuan to 17 yuan, even much cheaper than online, but the prices of some online stores are ridiculously low, so it must be fake.

I usually look for famous brands on the Internet. Usually, the owner is in a foreign country, so I can rest assured that I can also ask for a foreign receipt.