I would recommend a touch of tear trough filler to improve the dark circles appearing around the eye. This involves small injections of a suitable product to volumise and flatten out deeper wrinkles setting in.
This should be carried out by an experienced injector and make sure you check there before and afters!
The procedure lasts around 12 months.
Also - look into lifestyle factors - keep hydrated / are you sleeping enough or more tired or stressed recently? All of these may also improve your area of concern.
I hope this helps!