When I first bought and tried this product, I did not like it at all. Several months later, I found this in my makeup kit and decided to try it again. I loved it! I realized the reason why I didn't like it at first was because of the way I was applying it. The application process greatly influences how the product will look on your face. When I first tried the product, I put A LOT underneath my eyes and blended with my fingers. Big mistake! I found that when I applied a lot of this product under my eyes, it made my fine lines very noticeable. When I tried this product for the second time, I applied a lot less product farther down from my eyes. I took a damp sponge and blended the product, working upwards. I find that when you apply the product farther down from your eyes and work up, fine lines won't be noticeable because it's not settling into those creases. I applied the product underneath where my eyesocket ends, or about an inch under my bottom lash line. I would say the concealer is light/medium-buildable coverage. It did make my dark circles less noticeable, but it didn't completely "erase" them. If you're looking for a heavy duty concealer, this is not the one for you. The coverage is good for someone who doesn't have severe dark circles. I also wouldn't say it's an eye "treatment." Although it claims to have some beneficial ingredients as an eye treatment would, I couldn't notice a difference in my skin quality. My main complaints about this product are the twisting mechanism used to dispense the product and the sponge. Even when you're done with the product, a lot of product is wasted because it dries up in the sponge, and you can see product leftover on the twisting mechanism. It's a great product for light/medium coverage, but I'm giving it a B, borderline C, because it doesn't "erase" dark circles; it's not a treatment; and a lot of product is wasted.
*** Notes: This product's applicator sponge is not suitable for blending. If you try to use the applicator sponge to blend, it will be a huge mess. To blend, I use a damp sponge or the "expert face brush" from Real Techniques.