This is a great product for eliminating the appearance of dark circles under your eyes! I tried another product before this one that was more expensive, and it didn't work nearly as well! This goes on smoothly, blends evenly, and really covers dark circles and tightens the skin below the eyes, giving a more rested appearance. The cool roller ball is also a very refreshing feeling first thing in the morning. The only reason I didn't give this product a full five stars is because I've noticed that in addition to all the great aspects of it, it also dries out the skin under my eyes a little, even though I only use it once a day. It's not peeling or anything, but it seems to tighten the skin a bit too much, making my eyes look slightly more wrinkly--but only if you get REAL CLOSE to them! I've been told that's probably a result of the caffiene, but if it weren't for that ingredient, the product wouldn't work as well, so it all evens out in my opinion! This is a great product and I would very much recommend it to anyone who has tried unsuccessfully to make their undereye circles disappear!