Dark Circles

Dark circles under the eyes are one of the most commonly raised concerns in an aesthetics consultation, yet they are also one of the most misunderstood, because the shadow visible at the under-eye can be produced by three quite different underlying causes. The first is a true pigmentary component: excess melanin in the thin skin beneath the eye, most common in patients of Mediterranean, South Asian, Middle Eastern and African heritage, where the skin is genuinely darker rather than casting a shadow. The second is a vascular component: the rich network of veins just beneath the thin peri-orbital skin becomes visible as a blue-grey tint, particularly when the skin thins further with age or when fluid pools from tiredness or allergy. The third is a structural shadow created by the tear trough hollow, the natural groove between the lower eyelid fat pad and the upper cheek, which deepens as midface fat descends and bone remodels with age. Lifestyle factors compound the underlying anatomy. Sleep deprivation dilates facial blood vessels and encourages fluid retention in the loose peri-orbital tissues, both of which worsen the dark appearance. Chronic allergy (especially allergic rhinitis) produces venous congestion and a characteristic deepening of the circles called allergic shiners. Iron-deficiency anaemia, thyroid dysfunction, eczema, and side effects of some medications can all mimic or worsen true dark circles, which is why a basic medical history is important before any cosmetic treatment. Treatment is matched to cause. For structural shadows driven by the tear trough hollow, tear trough fillers using soft, low-hydrophilic hyaluronic-acid gels are the mainstay. They restore volume beneath the orbital retaining ligament, reducing the shadow cast across the cheek. This is a technically demanding injection and should only be done by clinicians experienced in the peri-orbital anatomy because complications such as Tyndall effect, persistent puffiness, or vascular events are not trivial. For vascular and pigmentary components, PRP therapy uses the patient's own platelet-rich plasma to improve skin quality, while polynucleotides (purified DNA fragments, typically salmon-derived) trigger fibroblast activity and improve dermal thickness and hydration. Some patients benefit from topical retinoids, brightening agents such as azelaic acid, and diligent SPF use to address pigmentary components. Patients with pronounced lower-eyelid skin laxity, festoons, or true orbital fat herniation (eye bags) may not be candidates for filler alone and should be offered an opinion on surgical blepharoplasty.