This is a hard one to comment on because serums obviously need at least a good month of testing before seeing any results. First impressions though are all positive; I only got one use out of it, but it seemed to be a generous amount and probably a bit more than you really needed for one use. It had a light scent to it, almost just what you expect expensive skincare to smell like. It had a light, creamy colour to it and a thin texture once applied to the skin. It sunk in within 30 seconds, and just felt really luxurious. I'd love to buy the full sized one day too see the real brightening effects it could have, but currently at $160 (US) I really can't justify that!