I've been doubting the product considering on how cheap it was, however it's never hurts to try. I received my parcel a week ago, and been using the serum for 3 days already. Let me tell you, It works wonder. It's still early to see the affect for the pore/blackhead, however I must say that when I apply it before sleep, I woke up with clean skin by the next day. overall I loved it!