A common cause of dark circles is tendancy to rub the eyes due to atopic tendancy- hence you should completely avoid rubing if this is the case., Other common cause is Anemia- you can do your Hb,CBC and send me the reports through online consult so i can advice treatment if needed for that. Apart from that you use RoC undereye cream by Jannsen(Johnson &Johnson) .. apply every night when you sleep. And in morning apply VC20 Vitamin C serum. Do this for 2-3 months. Hope this was helpful.