amazing [SEP] While this is outrageously priced, it really does seem to work. I've tried many serums but really never found anything significant with any of them. This works - my faces looks like it glows, even in this dry and bitter cold weather. I would never pay this much for this, but it does last. A tiny drop is all that's needed and it is non-irritating - even with my sensitive skin. The primrose oil probably helps a lot. There is barely a scent too. My skin looks firmer, plumper, and just more radiant.