And I don't know what you mean by "fake", whether it's prevention or futures trading.
If it is reverse packaging, you can see at a glance that the taste is different from the real one by looking at the exquisiteness of the bottle.
If you suspect that it is an expired promotion or not, just look at the code at the bottom.
Lancome consists of 5 codes, 2 English letters and 3 numbers. The second code indicates the year of production, and the last three digits indicate the specific days in a year. Y, A and B represent 03, 04 and 05 respectively, and the last three digits represent a certain day of the year, so CA 155 is 155 in 2004, that is, the shelf life is until the beginning of June 2007.
Hehe, it doesn't matter whether it's true or not. This is a gift from a friend. I hope I can help you.