Laser Resurfacing for Dark Circles Under Eyes?

Dark Circles under the eyes can be cause by many factors including fat loss with increased shadowing, increased vascularity or darkening of the skin.
Each one of these poses specific treatment challenges. 
For shadowing from fat loss you could consider filler in the "Tear Trough" area which would reduce the amount of shadowing
Fractional ablative and non-ablative laser may be a good option if it is secondary to increased pigment as well as a chemical peel.

Dark circles under the eyes can be a very complicated and multi-dimensional problem. Therefore, saying that laser resurfacing can help dark circles is false for all people.  Dark circles occur for many reasons and therefore the best treatment for them depends upon the cause and each patient's goals and limitations.
Some people have congenitally dark skin around the eyes that is truly hyper pigmented.  Others have changes in the topography (peaks and valleys) of the eyelids due to prominent fat, lack of fat, prominent skin folds, prominent muscles, or flat cheeks that leads to differences in the way light is reflected. Sometimes, patients with thin, lighter skin tones can have normal skin texture and normal volume but still have the appearance of dark circles due to prominent blood vessels and muscle layer visible through the thin eyelid skin.
In my experience, when the main concern is due to irregularity in skin texture and tone, including fine lines and thinning of the skin, laser resurfacing can be helpful. Both fractional and full field ablative lasers are useful in this area depending on your skin type and the degree of wrinkles. I have attached a video on erbium full field ablative laser of the eyelids who was looking to reduce the fine lines and sagging skin.  Laser will definitely not help when there is excessive fat and a prominent tear trough (indentation running from the corner of the eye along the upper cheek). This needs to be addressed with volume in the form of filler or surgery.  It also won't help when there is an excessive amount of skin because laser cannot tighten the skin enough in these patients. When patients have thin, pale skin and prominent vasculature there are some light based lasers (nd:yag) that can be helpful in addition to an appropriate skin regimen, laser treatments, microneedling and PRP to help build collagen and improve the skin.  Even this, however, is not always adequate in these patients.
In order to determine the best treatment you need to seek the advice from a trained specialist who can honestly evaluate all options including lasers, skin care regimens, non-surgical treatments like filler, and surgical treatments like a lower eyelid blepharoplasty and fat transfer. When you see someone with experience in all of these areas they can give you a very informed and useful opinion on the best treatment for you depending on what is causing your dark circles and what your goals are.  Good luck!

Treating dark circles under the eyes is different for every patient. There is no “one size fits all” approach to eliminating dark circles, so determining which treatment would be best for you is not possible without an in-person evaluation. If your dark under-eye bags are the result of pigmentation problems or skin damage, laser resurfacing may be a good option for you. However, under-eye circles can also be caused by lost volume. In this case, dermal fillers are the recommended option to restore the lost volume and rejuvenate the skin.
If you would like to learn more about your available options, schedule an evaluation with a board-certified plastic surgeon. Hope this helps.