Rejuran is one of Korea’s most popular skin-healing boosters, used to improve elasticity, texture, hydration, and overall skin quality.
But the method of injecting Rejuran can dramatically influence comfort, precision, and results.

In Korea, clinics commonly use two techniques:

1. Manual “Hand” Injection
2. Machine-Assisted Injection (Injector Device)

Here’s a clear breakdown of how they differ and which method may suit you better.

What Are Hand Injections? (Manual Technique)

Hand injections mean the doctor manually injects Rejuran point-by-point using a fine needle.

How It Works

• The doctor controls depth, angle, pressure, and volume for each injection
• Ideal for delicate or uneven areas of the face
• Allows precise placement into the dermis

Benefits

• Highest level of precision
• Better for thin, sensitive, or curved areas (eye area, smile lines, jawline)
• Minimizes product loss because Rejuran is placed exactly where needed
• Great for targeting specific wrinkles or hollows

Best For

• Under-eye treatment
• Fine lines, localized wrinkles
• Patients seeking maximum effect with minimal product waste
• People with sensitive or thin skin

Possible Downsides

• More discomfort than device injections
• Slight swelling or bumps (embossing) right after treatment
• Technique depends heavily on the injector’s skill

What Are Machine Injections? (Injector Device Method)

Machine-assisted injections use a multi-needle or automated device that stamps Rejuran into the skin at fixed intervals.

How It Works

• Rapid, consistent injections
• Treats large areas evenly
• Often less painful because of fine needles and quick delivery

Benefits

• Fast and efficient
• More comfortable for many patients
• Good for full-face glow treatments
• Less immediate swelling or bruising
• Ideal for busy schedules

Best For

• Full-face rejuvenation
• General hydration, glow, and elasticity
• Maintenance sessions
• People who want a quick, even treatment with minimal downtime

Possible Downsides

• Less precision in curved, bony, or delicate zones
• Some product loss can occur
• Not ideal for fine lines or detailed corrective work

Hand Injections vs Machine Injections: Key Differences

1. Precision

• Hand Injections → Highest precision
• Machine injections are more uniform but less tailored

2. Comfort

• Machine Injections → Usually more comfortable
• Hand injections may feel sharper but offer better control

3. Coverage

• Machine → best for full-face
• Hand → best for targeted areas

4. Product Efficiency

• Hand → minimal loss
• Machine → small loss possible due to rapid stamping

5. Naturalness of the Result

Both can look natural — the difference is in goal:

• Hand → natural correction and fine line improvement
• Machine → natural glow and hydration

Which Method Gives Better Results?

It depends on your concerns, not on which method is “superior.”

Choose Hand Injections if you want:

• Under-eye improvement
• Reduction of small lines
• Maximum absorption and precision
• A tailored, detailed treatment

Choose Machine Injections if you want:

• Hydrated, glowing skin
• Fast treatment with minimal downtime
• Even full-face coverage
• Comfortable maintenance sessions

Korean Dermatology Approach: Combine Both

Many clinics in Korea use a hybrid technique:

• Machine injection for overall glow and hydration
• Hand injection for targeted areas like the under-eyes, smile lines, or deep wrinkles

This creates:

• Better product efficiency
• More balanced improvement
• Enhanced collagen stimulation where needed

Final Verdict

Hand Injections

✔ Best for precision
✔ Best for under-eyes and detailed wrinkles
✔ Strong, focused improvement

Machine Injections

✔ Best for full-face glow
✔ Comfortable and quick
✔ Ideal for monthly or seasonal skin maintenance

Both methods are effective — the “better” one is simply the one that aligns with your skin condition, pain tolerance, and goals.