My skin loves this product. This winter it has looked very dull and sallow.My skin now has it's glow back. As mentioned in my QVC review I could purchase "Vats" of this serum. In fact I am......just purchased another on QVC on their "Easy pay", and now I am buying this at such a good deal.( I think that will add up to four). Dr Denese please do not stop making this item.It is a "work horse" in all of your products I use .