I was cursed with constant dark circles under my eyes, no matter how much sleep I get, how much I take care of myself, they're there.
I got this thinking it would help at least cover them up during the day, and BONUS, even help fade them over time.
No such luck.
I use it religiously every day, even if I'm not really going anywhere, for the last month or so, and it still hasn't really helped anything as far as appearance,
As far as covering the dark circles, it works alright, but you can still tell (at least with me) that it looks like you haven't slept for a long, long while.
I would recommend this product for someone who has dark circles, but not too dark.