Under Eye Filler vs Rejuran I in Korea

For visitors traveling to Seoul for under-eye rejuvenation, injectable treatments are among the most frequently requested procedures. Many international patients ask whether under eye filler or Rejuran I is better for improving dark circles, tear troughs, and overall under-eye skin quality.

Both treatments are widely performed in Korea, but they work in different ways. One focuses on restoring volume in the tear trough area, while the other focuses on improving skin quality and regeneration.

What Is Under Eye Filler?

Under eye filler is an injectable treatment that uses hyaluronic acid dermal fillers to restore lost volume in the tear trough area beneath the eyes. By filling the hollow area, the treatment can reduce shadowing that contributes to the appearance of dark circles.

The filler integrates with the surrounding tissue and attracts moisture, helping create smoother transitions between the lower eyelid and the cheek.

Why Patients Choose Under Eye Filler

✔ Immediate improvement of tear trough hollows
✔ Reduction of shadow-related dark circles
✔ Smoother under-eye contour
✔ Quick treatment with visible results
✔ Customizable volume correction

Under eye filler is often chosen by patients whose dark circles are primarily caused by volume loss and hollowing under the eyes.

What Is Rejuran I?

Rejuran I is a specialized version of the Rejuran treatment designed specifically for the delicate under-eye area. It contains polynucleotides (PN) derived from salmon DNA, which help stimulate skin regeneration and collagen production.

Instead of adding volume, Rejuran I focuses on improving skin thickness, elasticity, and overall skin health in the thin under-eye region.

Why Patients Choose Rejuran I

✔ Skin regeneration and repair
✔ Improved under-eye elasticity
✔ Strengthening of thin under-eye skin
✔ Reduction of fine lines
✔ Gradual improvement in skin quality

Rejuran I is often selected by patients who want to improve the quality and resilience of the under-eye skin rather than increase volume.

Key Differences Between Under Eye Filler and Rejuran I

The primary difference between these treatments lies in their treatment goals and mechanisms.

• Under eye filler restores volume by placing hyaluronic acid filler into the tear trough area. This reduces hollowness and shadowing, creating a smoother under-eye contour.
• Rejuran I works by stimulating skin regeneration using polynucleotide molecules. Instead of filling the hollow area, it strengthens and repairs the skin, improving texture and elasticity over time.

In general, under eye filler focuses on correcting volume loss, while Rejuran I focuses on improving the condition of the under-eye skin.

Downtime Comparison

Both treatments are minimally invasive injectable procedures with relatively short recovery times.

• After under eye filler treatment, patients may experience:
• Mild swelling for 1–3 days
• Possible bruising in the under-eye area
• Temporary tenderness
• Immediate contour improvement
• After Rejuran I treatment, patients may experience:
• Small injection bumps for 1–2 days
• Mild redness or swelling
• Slight tenderness in the treated area
• Gradual improvement in skin quality

Most patients can return to normal activities shortly after treatment.

Which Is Better for Under Eye Concerns?

Both treatments can improve the under-eye area, but they may be chosen for slightly different concerns.

Under eye filler is often preferred for:

• tear trough hollowness
• shadow-related dark circles
• smoother under-eye contour

Rejuran I may be preferred for:

• thin or fragile under-eye skin
• fine lines under the eyes
• improving skin elasticity and texture

Treatment choice often depends on whether the main concern is volume loss or skin quality in the under-eye area.

Ideal for Travelers Visiting Seoul

Both under eye filler and Rejuran I are commonly performed in Seoul and are popular among international patients seeking non-surgical eye rejuvenation.

Most patients experience:

• No surgical incisions
• Short treatment sessions
• Minimal recovery time
• Little disruption to travel plans

In some cases, practitioners may combine different treatments to address both volume loss and skin quality.

Who Is a Good Candidate for Under Eye Filler?

• Patients with tear trough hollowness
• Individuals with shadow-related dark circles
• Patients seeking immediate improvement
• Those interested in smoother under-eye contours
• Patients comfortable with filler-based treatments

Who Is a Good Candidate for Rejuran I?

• Patients with thin under-eye skin
• Individuals with fine lines around the eyes
• Patients seeking skin regeneration
• Those wanting gradual improvement in skin quality
• Patients interested in collagen-stimulating treatments

Expected Results Timeline

• Immediate contour improvement with under eye filler
• Gradual skin improvement with Rejuran I
• Progressive results over several sessions
• Maintenance treatments may be recommended

Final Takeaway

Under eye filler and Rejuran I in Korea both target under-eye rejuvenation, but they address different aspects of the problem.

Under eye filler restores lost volume in the tear trough area, helping reduce hollowness and shadowing. Rejuran I focuses on regenerating and strengthening the delicate under-eye skin to improve elasticity and texture over time.

For international patients visiting Seoul, understanding these differences can help guide expectations and support a more personalized approach to under-eye treatment. ✨