What Works Skin — Independent · Evidence-First · Ad-FreeIssue 014 · 20 April 2026 · Next: 04 Maywhatworksskin.com
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Concern · Pigmentation · Periorbital

P. 24 · GUIDE

Three categories
masquerading as one.

Vascular, pigmentary, structural. Treat the right one.

Pigmentary, vascular, and structural dark circles look the same in the mirror but respond to entirely different things. The serum aisle treats them as one problem; we treat them as three.

— § 01

The triggers worth tracking.

Skin lifts the same colour with stretch (pigmentary)

Tyrosinase-driven. The category most-likely to respond to a topical regimen.

62%
Bluish-purple tint, blanches with pressure (vascular)

Visible vessels through thin periorbital skin. Topicals will not move this — laser or filler will.

54%
Hollow shadow under orbital rim (structural)

Anatomy, not pigment. The shadow is light, not melanin. Volume restoration is the only real fix.

48%
Worse after poor sleep / dehydration

Modulator, not cause. Sleep affects perfusion and lid puffiness, both of which deepen the appearance.

76%
⁂

— § 02

Ingredients that actually work.

Tier
Molecule
Role
Evidence
Tier B
Hydroquinone 2% periorbital
Pigmentary
Effective when pigmentation is the primary mechanism. Use only at lower strength near eyes.
Tier B
Vitamin K + retinol eye cream
Vascular adjunct
Modest endpoints on perfusion and lid laxity. Slow.
Tier C
Caffeine 5%
Vasoconstrictor
Hours-long perfusion shift. Useful cosmetically; not a treatment.
Tier B
Tranexamic 3% periorbital
Pigmentary
Promising small-trial data; pairs with hydroquinone in skin of colour.
Tier A
Hyaluronic filler (clinic)
Structural
Tear-trough volumisation. The single most effective intervention for true hollows.
Tier B
Q-switched laser (clinic)
Pigmentary
Effective for dermal melanin; not for vascular or structural.
⁂

— § 03

The protocol.

  1. Phase 01 · Week 1

    Identify the type

    Stretch test in the mirror. Pigmentary stays brown; vascular fades; structural shifts as the light angle changes.

  2. Phase 02 · Week 1–8

    Topical trial

    If pigmentary: hydroquinone 2% PM + tranexamic 3% AM, with rigorous SPF. 8 weeks is the decision point.

  3. Phase 03 · Week 8+

    Escalate or pivot

    Vascular: KTP / pulsed-dye laser. Structural: tear-trough filler. Topicals will not move these categories.

Bottom line

The most-misdiagnosed category in cosmetic dermatology. Identify which type you have first; spend the money second.