I was pretty paranoid that I got a counterfeit product after reading some of the reviews. I decided to do some research to check. I ran a bar code scan through an authentication app and then followed the magnet instructions form Jayjun directly. Mine all had the individual bar codes and they all passed the tests. I believe MS Shopper sent me the authentic JayJun product. I can't speak for other sellers on amazon.As for the product itself. I like it a lot. I should mention though if you have oily skin or you don't like thick cream then you might not like this. It is thick and on the sticky side (until dry). I have dry skin and welcome the moist consistency especially during these dry cold winter days. I felt refreshed and super moisturized after I used it.