How to get rid of worst dark circles? (photo)

Dark under eye circles can make you look tired and older than you are. I would use a combination protocol that includes topical Melarase creams first, followed by a combination of injectable fillers, fractional laser, and RF to blend out the eyelid hollowness and tighten the skin. 
Recommended Creams: Melarase Brightening Kit
MelaClenz
Melarase AM
Melarase PM
Melapads
Replenish Retinoid Cream
Best, 
Dr. Karamanoukian
Realself100 Surgeon

I would suggest that you try a bit of HA filler such as Restylane in the tear trough area. It will help diminish the appearance of your dark circles. Schedule a consultation with a board certified plastic surgeon in your area to discuss.
My best,
Dr. Sheila Nazarian
@drsheilanazarian on Instagram

I WOULD TRY FILLERS BEFORE GOING IN AND DOING SURGERY , THE DIFFERENCE BETWEEN FAT TRANSFER AND FILLERS ARE FILLER ARE LESS INVASIVE AND CAN LAST 6-9 MONTHS SOMETIMES UP TO A YEAR DEPENDING ON WHICH ONES. FAT TRANSFERS ARE USUALLY SURGICALLY DONE WITH LIPO AND TRANSFERRED TO ANOTHER AREA OF THE BODY. A FAT TRANSFER CAN ALSO BE DONE THROUGH A LOCAL AFTER SURGERY FOR A REPEAT FAT INJECTION. FAT INJECTIONS OR TRANSFERS ARE USUALLY MORE PERMANENT. THIS IS SOMETHING THAT YOU MAY WANT TO SPEAK TO YOUR DOCTOR ABOUT IN A CONSULTATION AND SEE WHAT YOUR OPTIONS ARE.