UNDER-EYE HOLLOWS: FILLER VS REJURAN EYE IN KOREAN CLINICS

Under-eye hollows show up early and respond to two very different Korean treatments. Tear-trough filler restores volume; Rejuran Eye improves the underlying skin quality. Knowing which one belongs in your case saves a meaningful budget chunk.

DIAGNOSE THE PROBLEM FIRST

Three different conditions look like "under-eye hollows" but respond to different treatments:

• 01True tear-trough hollow, anatomical depression where the cheek meets the eye socket. Caused by volume loss with age or genetic anatomy. Filler is the right tool.
• 02Periocular skin laxity, thin, crepe-y under-eye skin from collagen loss. Doesn't respond to filler. Rejuran Eye, polynucleotide injections, or fractional resurfacing are the right tools.
• 03Dark circles from pigmentation, brown or grey shadow without true volume loss. Doesn't respond to filler. Pico toning or topical retinols are the right tools.

A meaningful number of foreign visitors get tear-trough filler when they actually have periocular skin laxity or pigmentation. The filler doesn't solve the problem; it can make it worse if placed too superficially in thin skin (visible Tyndall effect, blue under-eye tint).

TEAR-TROUGH FILLER, WHEN IT'S RIGHT

For genuine volume loss in the tear trough, low-volume HA filler placed deep on the periosteum produces immediate, often dramatic improvement. Korean injectors use 0.5–1.0 mL per side; over-filling produces a "puffy" look that's worse than the original hollow.

Brand selection matters. Use a low-G' filler designed for thin skin (Belotero Balance, Restylane Vital, certain Juvederm Volbella formulations). Higher-G' fillers visible through the skin produce the dreaded blue Tyndall effect.

REJURAN EYE, WHEN IT'S RIGHT

For periocular laxity, Rejuran Eye (formulated specifically for the thin under-eye skin) is the right call. The polynucleotides stimulate collagen synthesis and improve skin texture without adding volume. Course: 3 sessions spaced 2 weeks apart, then maintenance every 4–6 months.

Rejuran Eye improves: skin thickness, fine crepiness, surface texture. It does NOT correct anatomical hollows or pigmentation. Result curve: visible by week 4, peak at week 8–12.

“Filler restores volume. Rejuran Eye improves skin quality. Pigmentation is a separate problem entirely.”

WHEN TO USE BOTH

Mixed cases, anatomical hollow + thin/crepe-y skin, benefit from both. The protocol: Rejuran Eye 3-session course first to thicken the skin (8–12 weeks), then conservative filler placement once the skin can support it. The Rejuran-first sequence reduces the Tyndall risk and improves filler longevity.

PRICING IN SEOUL

Tear-trough filler with low-G' brand: ₩400K–800K for both sides. Rejuran Eye 3-session course: ₩540K–1.0M total. Combined Rejuran + filler protocol: ₩1.0M–1.5M (~$700–1,000 USD).

RISKS TO DISCUSS WITH YOUR INJECTOR

Tear-trough filler has the highest complication risk of any common HA filler placement. Vascular events (filler entering the angular artery) can cause vision changes, extremely rare but documented. Choose a clinic with high tear-trough volume and an experienced injector. Confirm: how many tear-trough cases per month does the named injector personally perform?