Hello, what is the best cure for black circles beneath eyes?

Get enough sleep: Black circles around the eyes are usually caused by lack of sleep or stress. Otherwise they are genetic and other than some creams that have not proven to help their is no specific therapy.

Dark Circles: Dark circles and wrinkles in a young adult often come from allergies. The chronic inflammation irritates the skin causing wrinkles and dark circles. If your eyes itch i would consider trying an over the counter allergy drop like patanol (olopatadine). To take it one step further, see a cosmetic physician. They can prescribe prescription creams like Retin-A and hydroquinone that are likely to help.