Dark circles under the eyes can be caused by several things such as a lack of sleep, nasal congestion or heredity. They can also be caused by a deficiency of certain vitamins in the diet.
Banana has lots of Vitamin K which help you get rid of dark circles. And other foods can be helpful as well, such as spinach and lettuce, dairy products, avocado, asparagus, coffee, organ meats, bacon and green tea.
Different people hold different opinions about your question. But in my opinion, it will not help people with dark circles, since bananas have an extremely burning acid in them and that will hurt your eyes a lot. While you can try cucumber and have plenty of sleep. Eat some food like spinach, oranges, grapefruit can also be helpful.
Yes, it is true that bananas will help people with dark circles which are caused by the lack of sleep, bad blood circulation and so on. The bananas have the role of calming down your mood. That is why the bananas help people with dark circles. In addition, you could use the warm compress to make your eyes feel comfortable.