Before reading this review, know this about my undereyes: they are not a problem area for me. I don't have particularly puffy or dark undereyes. I did not buy these individually but was sent them through ipsy and also with some other Skyn Iceland products. For me, they do not do anything to really improve my under eye situation (though that could be because my problems are so minimal there that I just can't tell). They do feel very cooling and luxurious and I use them because I want to preserve my delicate under eye area. So, I use them proactively really. I would not purchase them by themselves but I have heard they do work wonderfully if you struggle with your under eye area. So, basically, if you don't have issues with your under eyes, but want to just keep it moisturized and smooth, use them if you have them but don't buy them. Spring for an eye cream instead.