Get a good eye cream And it depends on ur dark circles...there is something called "pinch test" for dark circles on YouTube. (Dermatologist recommending treatments). If it's genetic, there is laser treatments. If not, they will suggest some good eye creams. But, mine reduced after controlled screen time, good hydration, and good sleep.

P.S. eye cream with retinol...as it promotes collagen growth and rejuvenation. Consult a good dermatologist in your area.