This eye cream is a tinted nude color cream which acts to de-puff and eliminate dark under eye circles. Because of the tinted color, I would opt for using this during the day versus nighttime. However, I would not just rely on this cream to cover up dark circles under makeup - I would still use a separate concealer.
Clinique boasts that this cream is clinically proven to visibly lighten dark circles by 30% in 12 weeks. Did I find this to be true? Definetly not. Even after using this cream after a couple of months. I did not see any brightening of my under eye circles.
The cream itself feels lightweight. You apply the cream by gently squeezing a small amount of product out of the tube and the using the applicator to spread the cream under your eye in a back and forth motion. The applicator creates a cooling effect and is much better than using your finger to spread the cream under your eyes. You should use this cream twice a day, and reapply as needed throughout the day.