Hi.. greetings! Dark circles could be because of loads of reasons including hereditary factors, tired eyes, lack of sleep, hormonal issues, lack of sunscreen use, etc . you ll need retinol based creams along with topical vitamin c. Also make use of a good sunscreen daily. If it's too bothersome, you could even consider rejuvenation treatment with prp treatment under cover of skin lightening creams. Hope this helps.