I was really looking forward to trying this, but I suspect the product I received was expired. It was a much darker color than in the picture, a murky dark reddish brown, and smelled rather strongly of something fermented. Also, every time I used it, it would at first pump out a thick dried up glob of the serum, even when I used it every day. That's a lot of wasted product- I don't know if a fresh product would behave differently and not coagulate so easily.