This product really works! I have been using it for several months. You will not see results right away but if you use it twice a day for about 4-6 weeks you will get results. Obviously if you stop using it your dark circles will return. It also helps with fine lines and wrinkles and puffiness. I actually use alot of the products in the Revision line and really love them. They are only sold in a doctors office and are much more concentrated than the over priced stuff you get at the department stores.