Dark Circles: The 4 Types Explained

TL;DR: "Dark circles" is a blanket term for at least four different things, and they don't all respond to the same fix. Pigmentary and vascular dark circles are the two that skincare — including caffeine and vitamin C — can genuinely soften the appearance of. Structural and shadow-type circles come from volume loss, bone structure, or genetics, and cosmetics only change how they look on the surface, not the anatomy underneath. Knowing which type (or combination) you have is the difference between a routine that works and one that never will.

Why "dark circles" is the wrong question

Dermatology literature classifies periorbital dark circles into several distinct types — broadly pigmented, vascular, structural, and mixed presentations, according to a comprehensive review published in The Journal of Clinical and Aesthetic Dermatology. Most people asking "why do I have dark circles" actually have some combination of these, which is why a single ingredient rarely solves it on its own.

1. Pigmentary — too much melanin

This type shows up as a brownish tone, often more visible on deeper skin tones, and tends to run in families or worsen with sun exposure and rubbing the eye area. It's caused by melanin building up in the skin itself, not by blood vessels or bone structure. Ingredients that brighten the look of pigmentation, like stable vitamin C, can help soften its appearance over time, though persistent or worsening pigmentation is worth a dermatologist's opinion, since it can sometimes be linked to allergies or skin conditions rather than genetics alone.

2. Vascular — the blue-purple tint

Vascular dark circles come from blood vessels sitting close to the surface of very thin under-eye skin. Less melanin, more blue. This is the type caffeine actually has research behind — its vasoconstrictive action, described in a widely cited review in Skin Pharmacology and Physiology, temporarily narrows those vessels and reduces the appearance of the tint. Cold compresses work on the same principle, which is why they're a genuinely useful (and free) companion to a caffeine serum.

3. Structural — tear-trough hollowing

This is the type no serum touches. With age, or simply due to genetics, the fat pad under the eye can thin or shift, creating a visible groove — the tear trough — between the lower lid and the cheek. That groove reads as a shadow, not a stain, and it's an anatomical change, not a surface-level pigmentation or circulation issue. Medical literature on infraorbital dark circles describes this as one of the most common and hardest-to-treat presentations, often needing volume replacement, such as dermal filler, to change meaningfully rather than anything topical. A cosmetic serum can hydrate the area and make skin look smoother, but it will not fill a structural hollow.

4. Shadow-type — when it's really about the light, not the skin

Sometimes what reads as a "dark circle" is really a shadow cast by puffiness sitting just above a hollow, or by the angle the light hits a slightly sunken area. It's less a separate skin condition than a lighting effect layered on top of mild structural changes. This is genuinely one of the more common reasons dark circles look worse under overhead lighting (bathroom mirrors, we're looking at you) than they do outdoors. Concealer and skin-smoothing routines help more with this type than any active ingredient will.

What cosmetics can — and can't — do about each type

To be direct about it: a well-formulated eye serum can reduce the appearance of pigmentary and vascular dark circles, and soften the look of puffiness. It cannot rebuild lost volume, correct bone structure, or treat a medical cause like allergies or thyroid conditions. If your circles are severe, sudden, painful, or paired with other symptoms, that's a conversation for a doctor or dermatologist, not a skincare routine. This article is general information, not medical advice.

Under-Eye Espresso Eye Serum: built for the types skincare can actually help

Under-Eye Espresso Eye Serum leads with caffeine for the vascular, blue-toned type, backed by sodium ascorbyl phosphate (a stable vitamin C derivative) for the pigmentary side, plus a stabilized green tea derivative (epigallocatechin gallatyl glucoside) and citrus reticulata (tangerine) fruit extract for antioxidant, brightening support. Sodium hyaluronate keeps the formula hydrating and lightweight, with cyclodextrin helping stabilize and deliver the actives. It's vegan, cruelty-free, and lab-formulated — built to do what a serum can honestly do, and nothing it can't.

Try Under-Eye Espresso Eye Serum

FAQ

Can I have more than one type of dark circle at once?

Yes — mixed presentations are common, especially pigmentary plus vascular, or structural plus shadow-type. A serum can help the appearance of the pigmentary and vascular components even if it can't touch the structural piece.

How do I know if my dark circles are structural?

Gently stretch the skin under your eye. If the dark area is a visible groove or hollow rather than a flat tone, it's likely structural. This isn't a diagnosis — a dermatologist can confirm.

What's the single best first step?

A consistent eye serum with caffeine and vitamin C for the pigmentary and vascular types, sun protection to help stop pigmentation worsening, and enough sleep. For structural circles, ask a dermatologist about medical options.

Sources

Sarkar R, Ranjan R, Garg S, et al. Periorbital Hyperpigmentation: A Comprehensive Review. The Journal of Clinical and Aesthetic Dermatology. 2016;9(1):49–55.
Vrcek I, Ozgur O, Nakra T. Infraorbital Dark Circles: A Review of the Pathogenesis, Evaluation and Treatment. Journal of Cutaneous and Aesthetic Surgery. 2016;9(2):65–72.
Herman A, Herman AP. Caffeine's Mechanisms of Action and Its Cosmetic Use. Skin Pharmacology and Physiology. 2013;26(1):8–14.
Cleveland Clinic. Dark Circles Under the Eyes: Causes & Treatment.

Real ingredients. Real results.

Dark Circles: The 4 Types (and What Actually Helps the Look of Each)