Dark circle type decoder.

The four dark circle types

1. Pigmented (melanin-driven)

Brown or grayish darkness from melanin deposition in the thin under-eye skin. Causes: post-inflammatory hyperpigmentation (from rubbing, allergies, prior eczema), sun damage, hormonal pigmentation, and genetic predisposition. Common in Fitzpatrick III-VI skin tones.

• Visual giveaway: brown tint, doesn\'t lighten when you stretch the skin gently
• Treatments that work: azelaic acid 10-20% (the safest brightener for skin of color — see our finder), tranexamic acid topical or oral, niacinamide 5%, gentle retinoids in lower concentrations, daily SPF 30+ (mandatory — without SPF, all brighteners are net zero)
• Treatments that don\'t work for this type: caffeine eye creams (those target vascular), de-puffing roller-balls, ice rollers

2. Vascular (blood-vessel-driven)

Bluish, purplish, or pinkish darkness from dilated blood vessels visible through the thin under-eye skin. Causes: genetics (very common in fair skin), allergies (chronic histamine release), poor sleep, dehydration, sinus congestion, and aging (thinning skin amplifies what was already there).

• Visual giveaway: bluish or purple tint, lightens when you stretch the skin sideways, often worse in the morning
• Treatments that work: caffeine eye creams (transient vasoconstriction), pulsed-dye laser or IPL for persistent vessels, allergy management if histamine-driven, address sleep and hydration baseline
• Treatments that don\'t work for this type: brightening actives (no melanin to fade), retinoids (can make the thin skin even more transparent — sometimes makes vascular darkness more visible, not less)

3. Structural / shadow circles

Apparent darkness from anatomical shadowing, not actual pigment or vessels. The "tear trough" depression between the eyelid and the cheek creates a shadow that reads as a "dark circle." Common as we age — fat pads shift, ligaments relax, the depression deepens.

• Visual giveaway: visible groove or depression, "darkness" disappears completely when you look up into a mirror with overhead light from below, but is dramatic with overhead lighting from above
• Treatments that work: hyaluronic acid filler (dermatologist-administered, lasts 9-18 months), fat repositioning surgery (lower blepharoplasty for severe cases)
• Treatments that don\'t work: every topical product. Shadows aren\'t pigment.

4. Fatigue / fluid / dehydration

Transient darkness from puffiness, fluid retention, dehydration, or pure sleep deprivation. Distinct from the three "real" types because it responds to lifestyle, not topical treatment.

• Visual giveaway: variable day-to-day, worse after poor sleep / late meals / alcohol / heavy crying / salty food, better after rest
• Treatments that work: 7-9 hours of sleep, head-elevated sleeping position, reduce dinner sodium, hydration, cold compress in the morning
• Treatments that don\'t work: any topical that promises "instant brightening" — those are caffeine vasoconstrictors that work briefly on vascular darkness but do nothing for fatigue darkness

Many people have a mix

About half of patients with under-eye darkness have features of more than one type. The most common combination: pigmented + structural (the shadow + the underlying brown tone amplify each other), or vascular + fatigue (the vessels are always there but become visible when you\'re tired or dehydrated).

Treating a mix usually means combining approaches — e.g., topical brightener for the pigmented layer, filler for the structural layer, lifestyle changes for the fatigue layer. A single product won\'t handle all of it.

The pinch / stretch test

Gentle diagnostic you can do in a mirror:

1. Look in a mirror with even lighting.
2. Gently pinch and lift the under-eye skin (without pulling hard — this skin is fragile).
3. Watch what happens to the darkness:

• If the darkness moves with the skin pinch → likely pigmented
• If the darkness lightens or disappears → likely vascular (you\'re compressing the vessels)
• If the darkness stays in place but the depression flattens → likely structural
• If you can\'t tell or the test feels ambiguous → probably a mix

The tool below asks the same question plus 5 others to make the call more reliably than a single test alone.

When dark circles need a doctor (not a cosmetic consult)

• Sudden onset of significant darkness in adulthood with no clear cause
• Accompanying symptoms: facial swelling, vision changes, sinus pain, fatigue out of proportion to sleep
• Itchy under-eyes plus darkness (suggests allergic shiners — needs allergy workup)
• Yellowish darkness (rule out xanthelasma — see our milia tool for differential)