Guide

What causes under-eye hollows and dark circles?

Dark circles are not a single condition. Doctors usually distinguish several types, and many people have a mix:

Vascular: Thin skin lets blue or purple vessels show through.
Pigmented: Brown darkening from melanin, common in some skin types and with rubbing or allergies.
Structural: A hollow tear trough casts a shadow that looks dark.
Textural: Fine crepey lines and dullness make the area look tired.

Identifying the dominant type matters because each responds to different treatments. See Under-Eye Hollows and Dark Circles for an overview.

How can Rejuran help the under-eye area?

Rejuran products contain polynucleotides (PN) purified from salmon DNA. In the thin eye skin, PN is used to support the skin's repair environment and improve quality over time. For many patients, this may mean slightly thicker-feeling, smoother skin that hides vessels a little better and reflects light more evenly. Rejuran i is the formulation intended for the eye area, while Rejuran Healer is the general version; your doctor chooses based on your skin. Read more on Rejuran Healer.

Who is it suitable for?

Rejuran around the eyes may suit you if you have:

Thin, translucent under-eye skin with visible bluish tone
Fine crepey lines below the eyes
Mild hollowness where skin quality is the bigger issue
A wish to avoid or delay filler in this area

When another approach may be better

If a deep tear trough is the main cause, a booster alone will usually not be enough, and an experienced doctor may discuss a carefully placed HA filler instead. Brown pigment may need pigment-focused care. Prominent under-eye bags caused by fat bulging are generally not improved by boosters and may need a surgical opinion. Rejuran is avoided with salmon or fish allergy, during pregnancy and breastfeeding, and over active infection.

What to expect during treatment

The doctor examines the under-eye area in different lighting to identify the type of darkness.
Numbing cream is applied, typically for 20 to 30 minutes.
Very small amounts are injected with a fine needle or cannula, carefully avoiding vessels.
Gentle cooling may be applied to reduce swelling.

The skin here is delicate, so small bumps, puffiness and bruising are more likely than elsewhere on the face. Bumps usually settle within 1 to 3 days; bruises can take up to a week or so.

How many sessions are needed?

A typical plan is 2 to 4 sessions spaced about 2 to 4 weeks apart, then maintenance every few months if helpful. Changes are subtle and gradual. Many patients see the clearest difference when comparing photos before the first and after the last session. Results vary by individual.

What can be combined with it?

HA filler: For structural hollows, sometimes after boosters have improved skin quality. See Restylane Filler for Under-Eye Hollows and Dark Circles.
Laser toning: For pigment-type darkness, using settings safe for the eye area.
Full-face boosters: Treating the whole face can keep skin quality consistent.

Alternatives to consider

PDRN boosters work on similar principles with shorter DNA fragments. Exosome treatments are another regenerative option. For hollows that need lift and volume, filler is the more direct tool. Our answer on What helps under-eye hollows? compares these options.

Aftercare tips

Use a cool compress gently for short periods on the first day.
Avoid eye makeup for about 24 hours and do not rub the area.
Sleep with your head slightly raised the first night.
Skip alcohol, saunas and strenuous exercise for 1 to 2 days to limit swelling.

Daily habits that help the eye area

Consistent sleep, treating allergies that cause rubbing, and sunscreen or sunglasses outdoors all reduce the factors that darken the under-eye area. An eye cream will not replace in-clinic care, but a simple hydrating product helps thin skin stay supple between sessions.

Booking in Hongdae

Because bruising can occur, avoid scheduling eye-area boosters right before photos. Pricing depends on the product and number of sessions and is confirmed in writing at consultation. Visit Location & Hours for directions and request a time on the Booking page.

Is Rejuran under the eyes safe?

It is a commonly performed treatment, but the eye area is delicate, so technique and product choice matter. Bruising, swelling and small bumps are the most common effects. Infection and lumps are uncommon. Discuss your medical history and allergies, especially to fish, before treatment.

Will Rejuran get rid of my dark circles?

It may improve darkness caused by thin skin and visible vessels, but it is unlikely to remove circles caused by deep hollows, genetics-related pigment or fat bags. A doctor can identify your type and set realistic expectations before you start.

Rejuran or filler for under-eyes?

Rejuran improves skin quality; filler restores volume. If your main issue is thin, crepey skin, a booster may be the better first step. If a tear-trough hollow casts a shadow, filler may do more. Some patients benefit from both, staged over time.