Some people have darks circles relative to their heredity, allergies, or thin skin under the eyes. Examples:
-`ever notice that most people of Greek or Indian-descent have heavier eyes and/or dark circles?
- "allergy shiners"
At 32, I have had dark circles under my eyes since I can remember, and it has nothing to do with the amount of sleep I get. They're there to stay, and good concealer is my best friend. (FYI: I am a former make-up artist, have fair skin, and blonde hair.)
If circles are related to fatigue, or you wish to try reducing the appearance of ever-present circles, try one of the following: Hylexin, Peter Thomas Roth Power-K Eye Rescue, or Murad Lighten and Brighten Eye Treatment.
Concealers: Amazing Cosmetics Amazing Concealer or Jane Iredale Covercare Camoflage.