As I am aging , it is important to me to have a an eye serum with retinol. Of course , there are many out there. A friend , who I admired her skin , told me about this product. It gets sold out pretty quick but came back in stock quick as well. I absolutely love this serum and have seen a difference overall with my skin under my eye. Also, the customer service at Lilac & Flint is wonderful. I had some questions about this product and they respond back to you right away. You should definitely give this a try.