The under-eye area is one of the first places to show signs of aging — hollowness, dark circles, texture issues, creasing, or pigmentation. In Korea, three treatments dominate the under-eye category: filler, Rejuran, and laser.
Each addresses a DIFFERENT cause of under-eye problems, which is why choosing the right one depends on what’s actually going on beneath your eyes.

This guide breaks down what each treatment does — and when it’s the best option.

1. Under-Eye Filler: Best for Hollowness & Volume Loss

Filler is the go-to treatment when dark circles are caused by tear-trough hollowing or volume loss.

What It Treats

• Sunken under-eyes
• Deep tear troughs
• Shadows caused by hollowness
• Under-eye asymmetry
• Tired, aged appearance

How It Works

Hyaluronic acid filler is placed in the tear-trough or mid-cheek region to lift the hollow, smooth the transition, and reduce shadowing. Once the hollow is filled, dark circles often look dramatically lighter.

Best For You If…

• Your dark circles look deeper in certain lighting
• You see a visible groove under your eyes
• Concealer doesn’t hide the “shadow”
• Volume loss is the main issue

Pros

• Instant improvement
• Natural results when done conservatively
• Lasts 6–18 months

2. Rejuran (PN/Polynucleotide): Best for Thin Skin & Crepey Texture

Rejuran Healer is ideal for eyes that look thin, crepey, wrinkled, or dehydrated — especially when the problem isn’t volume, but skin quality.

What It Treats

• Crepey under-eye skin
• Fine wrinkles
• Thin or fragile skin
• Dull, dehydrated under-eyes
• Mild pigmentation + elasticity loss

How It Works

Rejuran uses PN (polynucleotides) to repair damaged skin, boost collagen, thicken the dermis, and improve texture over time. It doesn’t create volume — instead, it strengthens and rejuvenates weakened under-eye skin.

Best For You If…

• You pinch your under-eye skin and it feels thin or creased
• You have fine wrinkles or crepey texture
• You want natural, subtle rejuvenation
• You're not a good candidate for filler

Pros

• Improves skin quality, thickness, and elasticity
• Very natural results
• Great for people worried about filler puffiness

3. Laser: Best for Pigmentation, Redness & Skin Brightening

Laser treatments work best when dark circles are caused by pigmentation rather than hollowness or thin skin.

What It Treats

• Brown or gray pigmentation under the eyes
• Sun-induced darkening
• Post-inflammatory pigmentation
• Visible vessels or redness (depending on the laser)
• Dull tone or uneven under-eye skin

How It Works

Different laser types target pigment, improve circulation, brighten tone, and thicken collagen in the dermis. Common choices include gentle toning lasers, fractional lasers, and vascular lasers (if redness is present).

Best For You If…

• Your dark circles look brownish
• Pigmentation runs in your family
• Your skin tone appears uneven even without hollowness
• Concealer helps somewhat, but darkness remains

Pros

• Improves discoloration & tone
• Also boosts texture when fractional settings are used
• Pairs well with Rejuran for a complete brightening plan

So… Which One Do You Actually Need?

It depends on your primary cause of dark circles:

Choose Filler If:

• The problem is hollowness
• You see a shadow or tear-trough groove
• You want immediate improvement

Choose Rejuran If:

• The problem is thin skin, crepiness, or fine wrinkles
• Makeup settles into lines
• You want a natural rejuvenation without volume

Choose Laser If:

• The problem is pigmentation or redness
• Your dark circles are brown, gray, or purple-toned
• You want tone brightening and collagen stimulation

Combination Treatments = Best Results

Most under-eye issues come from multiple causes, so Korean dermatologists often combine treatments:

• Filler + Rejuran → lifts hollow + improves texture
• Laser + Rejuran → reduces pigmentation + strengthens skin
• Laser + Filler → lightens color + removes shadows
• All three (for complex dark circles) → lift + brighten + rejuvenate

This layered approach produces the most natural and long-lasting under-eye results.

Final Recommendation

There is no one-size-fits-all solution.

• If the issue is structure, choose filler.
• If the issue is skin quality, choose Rejuran.
• If the issue is pigmentation, choose laser.

A specialist can assess which factor dominates — but understanding these differences helps you choose what your under-eyes actually need.