Dark circles around the eyes at your age is unusual and could indicate an insulin resistance. See a Dermatologist who will recommend products for reducing puffiness and darkness and also advocate the correct method to use it, it should be dabbed and not rub. He may request a few blood tests to understand the blood chemistry and treat them specifically. Avoid rubbing the eyes as it will increase pigmentation. Now-a-days many chemical peels also offers realistic promise- like glycolic acid and lactic acid peels. Dermapen in combination with mesotherapy also helps.
Skin is the mirror of internal health and to get a perfect skin you need to treat both ways - internally and externally. A healthy diet and lifestyle is mandatory to achieve results.