I love this serum. I experiment quite a bit with different skincare items, and this is one of the few products that has given me an immediately noticeable difference and continued to work well. I put it on in the evening and my skin looks smooth, plump, and radiant in the morning. It seems to minimize pores and gives me a bit of a glow. Unfortunately, the bottle is defective. It untwists and opens on its own, no matter how carefully I close it. I worry that the product will begin to break down, so I'll have to purchase my own dropper bottle. I have reached out to customer service (over a week ago) but have not received a response, which was disappointing. I will purchase this product again but probably from a third-party retailer with better customer service.