Dark eye circles can also be caused by broken capillaries around the eyes, these give the area under the skin a darker appearance in exactly the same way a bruise does. Sadly a few slices of cucumber and a good night’s sleep are unlikely to solve the problem long term and whatever the reason for your dark circles, the best remedy is a good under eye concealer/brightener or a skin brightener which is designed for long tern use. See which products we recommend below whatever your skin type or budget.