How to get rid of dark circles around the eyes ?

Hi I'm 14 male, and I sorta have dark spots under my eyes. I sleep more than 7 hrs and 30 minuets a day. Sometimes 8! But is that too little? I sometimes have stress. Sometimes my eye can irritate too. I have to allergies or I'm not allergic to anything. I doubt its heredity cuz my bro has his eyes clear of dark circles. Is there anything I can do about it?? Plz and Thx u :)