This concealer has been a staple for me. It's great!
For a while I fell in love with the Nars Soft Matte Concealer, and while I still use that everyday, it can't replace the Nars Creamy Concealer.
As I get older and the dark circles under my eyes get darker and the skin gets thinner, I struggle to find concealers that don't cake, look heavy, or settle into the fine lines under my eyes. Luckily the Nars Creamy Concealer is there for me - time after time. It's not cheap by any means, but it does work, and it has earned the rating it has received.
This is the first concealer I've actually bought and used regularly, and it's one I'll definitely repurchase. I have pretty bad dark circles under my eyes, but I also have fine lines there which meant that most concealers I'd tried previously were a bit useless; they'd look good initially but crease like crazy and I'd have to take them off. Anyway, this concealer - while not entirely crease-proof (although maybe I just have weirdly crease-inducing eye sockets) - does just what I want it to. It's easy to apply with your fingers or a brush, the shade range seems decent (I use 'Vanilla') and it stays put. It also looks really natural and doesn't have any of the bizarre glitteriness that other brands put in their under-eye concealers (sup, Clinique!). I'd describe the finish as somewhere between matte and dewy. I usually wear this over a tinted moisturiser or sunscreen. It works well for covering spots, too.
Tips: Not really a tip, but the RRP above seems wrong - this cost me NZ$46 from Mecca.