I've tried a bunch of undereye concealers and for me it's always a tradeoff between coverage and maintaining a natural look... this strikes a balance between the two that I'm all right with. Most undereye concealers are too light for my skin tone, so I like that this blends well without sacrificing too much in the way of coverage. The concealer doesn't break me out or look too cakey. I usually put two tiny dots at a time (all but 2 of the brush holes clogged for me after leaving the cap off too often, so this is actually pretty easy for me to do) under each eye and then blend, sometimes adding more if I want more coverage, prepping my eye area beforehand with a dab of lotion. A little goes a long way: I've had this for over half a year, using it most days & there's still quite a bit left. The packaging is pretty awful, but after using it for so long I've gotten used to it and barely notice, haha. My makeup routine involves me twisting it (2 clicks) and then doing the rest of my makeup before coming back to it 5-10 minutes later. It's pretty ridiculous but the concealer itself works fine for me so I put up with it. I'll move on to another concealer when this one is done.
PROS: doesn't irritate my eyes, buildable, blends well enough to even out skin tone/ dark circle discolorations, doesn't clog pores, looks good/nice finish, lasts all day without anything funky going on
CONS: packaging, not the best value for amount of product