I started using Pronu Eye Serum about a week and a half ago. I apply it morning and night. My first picture shows my eyes when I get up in the morning and the last picture show my eyes in the afternoon. This product does seem to lighten the dark circles and tighten up the wrinkles and bags under my eyes. The third picture is the most recent. I will continue to use this product because I believe that it is helping my eyes look younger and brighter. I haven't had any side effects other than a slight irritation when applying it, but it goes away as it dries. I believe that it is just a temporary fix and that healthy eating, restful sleep, taking time to rest your eyes, also contribute to less tired looking eyes.
I received this product at a discount in exchange for my honest and unbiased review.