Despite having studied cosmetic dermatologic surgery in a fellowship after residency, and practicing this subspecialty since 1993, and being aware of the newest technology in the use of lasers, devices, fillers and topical products, I have not found one treatment that consistently improves dark lower eyelid circles. We know that some darkness is actually an inherited trait (familial periorbital hyperpigmenation) and that some dark circles could be related to the combination of water content in the dermis and the blood flow in the skin, but we don't understand why it can change from a day to day basis, why it looks worse when we're tired, if it's a venous or arterial circulation issue, etc. Any of these treatments used for this condition has risks and without a consistently good effective result I am often reluctant to treat this condition, especially in those with a skin type that is more apt to develop a post inflammatory hyperpigmentation, and usually don't do filler in those patients that have preexisting puffiness from allergies or sinus issues. There are risks with fillers that have to be discussed prior to use in this area and there is downtime with many of these procedures.ThermiSmooth radiofrequency has helped some of my patients with no downtime and Fractional laser resurfacing has helped some as well, but there is some downtime with the latter. I have definitely had patients though, from every treatment that has been treated in which I did not see improvement, even in a some cases when my patient thought there was improvement, I did not appreciate a difference. In the cases of improvement that I have seen and my patients are happy, it never has been a 100% improvement and all patients need to have realistic expectations prior to spending money and incurring risk, no matter how safe the procedure, before undergoing the treatment.The information provided in Dr. Shelton's answer is for educational purposes only and is not intended to constitute medical advice. The information provided should not be relied upon as a substitute for consultations with a qualified health professional who may be familiar with your individual medical needs.