Dark Circles
Pigment, thin skin, shadow, or bags — four different problems that look the same in the mirror.
Dark circles are the concern where wrong-cause treatment wastes the most money. Peer-reviewed work separates four contributors: genuine pigmentation of the skin, thin translucent skin showing the vessels and muscle beneath, shadowing from a hollow tear trough, and shadowing from under-eye bags. Filler helps exactly one of those. The mirror test is crude but useful: if the darkness fades when you gently stretch the skin or look up, you're likely in shadow territory; if it stays put, think pigment or thin skin.
Why it happens
A review in Annals of Dermatology identifies the four mechanisms — hyperpigmentation, tear-trough hollowing with or without fat herniation, infraorbital laxity, and thin skin over the orbicularis muscle — and stresses matching treatment to cause. The American Academy of Ophthalmology adds that shadows from age-related hollows are not the same thing as true dark circles: losing fat and collagen thins the skin and lets reddish-blue vessels show, inherited periorbital pigmentation is more common in darker skin tones, and allergies and sun add melanin of their own. Bags form when the tissues around the eye weaken and fat shifts forward into the lower lid.
Which of the four do you have? Pigment responds to dermatology, not needles. Shadow from a hollow responds to filler. Bags respond to surgery. Thin skin is the hardest to treat honestly. A provider who examines you and names the type before proposing anything is the one to trust.
Treatment options, honestly compared

First-line when the darkness is actually in the skin.
Depigmenting agents — hydroquinone, tretinoin, vitamin C, kojic and azelaic acid — work but slowly, with peels and lasers for resistant cases. No injectable improves pigment; if this is your type, the med-spa menu is the right aisle and the filler menu isn't.
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Tear-trough filler — for the shadow type
Non-surgicalThe only type filler helps — with two FDA-approved products.
Hyaluronic acid filler fills the hollow whose shadow reads as a dark circle. Two products are FDA-approved for the infraorbital area: Juvéderm Volbella XC (results labeled up to a year; over half of trial subjects needed a one-month touch-up) and Restylane Eyelight. This is advanced-injector territory — thin skin shows superficial filler as a bluish tint (the Tyndall effect, ~1% of cases in pooled data, fixable with hyaluronidase), and the surrounding periorbital region is otherwise on the FDA's list of areas it recommends against injecting.
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Lower eyelid surgery — for bags
SurgicalWhen herniated fat, not a hollow, casts the shadow.
Lower blepharoplasty removes or repositions the fat that has pushed forward into the lid, through an incision under the lashes or inside the eyelid, sometimes with excess skin removed. It's the durable answer for bags — and the wrong answer for pigment or thin skin.
Compare providers for this treatment →What it costs
ASPS average surgeon/physician fees — the surgeon alone, excluding anesthesia, facility, and related costs. Topical regimens are priced by the product and visit, not published as a fee.
| Lower blepharoplasty | $3,876 |
| Hyaluronic acid filler (per treatment) | $715 |
The under-eye is the least forgiving place on the face to inject
Beyond the Tyndall effect, pooled data on tear-trough filler report malar edema — persistent puffiness over the cheekbone — in up to about one patient in ten, and the periorbital region carries the vascular risks the FDA warns about for all fillers, including vision loss. Volume, product choice, and depth all matter more here than anywhere else; choose the injector by their under-eye work specifically.