As per your complain dark circles can occur due to causes like -Excessive stress
-Overuse of mobiles and laptops.
I would suggest you to first of all reduce stress by doing meditation
and breathing exercises.
Take sufficient sleep.
Avoid excess use of gadgets.
You can start applying creams containing Kojic
acid and Vitamin E.
Grapeseed extract containing creams are helpful.
You can also put pieces of cucumber
over the closed eyes as it has soothing effects.
You can also place grated potato over the eyes.
Drink plenty of water and take a nutritious diet.
In case of no improvement consult a Dermatologist
and get evaluated and he can also advised lazer treatment for removing the dark circles.