I recall there was a lot of hype when the Garnier Skin-Renew Anti Dark Circle Eye Roller ($12) first came out (along with its tinted counterpart). Then a lot of other brands started to come out with their own eye rollers. But what do they really do? Right off the bat I'll tell you this: I don't notice any brightening effects. Be it because I don't have serious under eye darkness or because these just aren't effective at reducing it, the biggest benefit (for me) that products like these have is that they soothe and reduce puffiness. Most, if not all, are formulated with caffeine. If you don't suffer from puffiness you might not notice a difference but you still might like these because of how nice they feel under the eyes. The metal roller balls feel cold against the skin and serve as a nice morning under eye massage and pick-me-up. Out of these three, my favorite is the Hard Candy Eye'M Tired ($5). Not only does it have a "punny" name, but it also absorbs the quickest and leaves no residue. Plus it's the most affordable one. The Garnier Skin-Renew Roller works similarly, but I prefer the Hard Candy applicator because it has three roller balls instead of one. My least favorite, and the one I recommend you stay away from, is the Yes To Blueberries Brightening Eye Roller ($20). It's the most expensive of the bunch and has the worst roller applicator. The roller ball gets stuck and tugs on the delicate under eye skin.
Let me know if eye rollers are part of your skincare/makeup routine. Which one is your favorite?