Dark circles: why they happen and how much cosmetics can do

Shopping for a "dark circle removal cream" ends in disappointment for one reason: not all dark circles are the same thing. Look in the mirror first and find yours.

Three kinds

• Bluish/purple: blood vessels showing through thin skin. Worse with little sleep, screens and colds. More in the morning, less by afternoon.
• Brown: pigment in the skin itself. Worse with sun, rubbing, itching and allergies. On South Asian skin this is the most common.
• Shadow: a deep eye socket or a hollow cheek casts a shadow. It changes with the light, not with cream.

What can be done for each

• Brown: the one that answers best to cosmetics. Sunscreen under the eyes in the morning; at night a light eye product with niacinamide, vitamin C or kojic acid. Stop rubbing; if allergies are behind it, manage those. — IUNIK Prpolis Vitamin Eye Cream 30ml, Anua Zero-Cast Moisturizing Finish Sunscreen SPF 50 50ml
• Bluish: sleep, water, a slightly raised pillow. A retinal/peptide eye cream thickens the skin a little over months so the vessels show less. Caffeine is temporary. — Numbuzin No.9 NAD+ Retinal Volumetox Eye Cream 20ml, Medicube PDRN Pink Peptide Eye Cream 30ml
• Shadow: concealer and good light. This is outside what cosmetics do; buying something to "fix" it wastes money.

How to apply eye cream

• A grain of rice, pressed in with the ring finger, no dragging.
• On the orbital bone, not right at the lash line.
• Retinal eye cream at night only; start with two or three nights a week.

Are eye patches worth it?

A 15-minute patch in the morning is good for puffiness and dryness: before an event, after a short night. Patches do not change anything lasting. — Numbuzin No.9 NAD+ Collagen Under Eye Patches

Honest expectations

Brown circles can lighten in 8–12 weeks; bluish ones reach "less noticeable". Gone completely: no cream's claim is true.

Sudden, on one eye, or with swelling or pain: not a cosmetics matter, see a doctor.

Sources

• American Academy of Dermatology: dark circles come from genetics, thin skin, sun and rubbing; sunscreen and no rubbing are the first steps.
• Published studies show topical retinoids slightly thickening the skin over months.