“Korean skin boosters go far beyond hydration — they’re ‘liquid gold’ that rebuilds skin at the cellular level.”
Korea leads the world in skin booster and injectable skin treatments. Korean clinics offer a far wider range of skin boosters than anywhere else — from the iconic Rejuran series to cutting-edge Exosome therapy, RE2O ECM skin booster, and Laetigen collagen boosters. Each has unique benefits tailored to specific skin concerns.
This comprehensive guide breaks down Korea’s most popular skin boosters to help you find the perfect treatment for your skin.
1. Rejuran Series — Korea’s National Skin Booster
Rejuran is Korea’s most iconic skin booster brand. Its core ingredient — polynucleotide (PN/PDRN) derived from salmon DNA — repairs damaged skin cells at the DNA level and stimulates collagen regeneration. Nearly every Korean dermatology clinic carries Rejuran.
Rejuran Healer (Red Box) — Classic Repair
The original Rejuran and Korea’s most widely used skin booster. Moderate PN concentration for skin repair and regeneration. Benefits: Repairs damaged skin barrier, improves texture, thickens dermis, boosts elasticity, minimizes pores. Best for: All skin types, especially thin/sensitive/barrier-damaged skin. 3-4 sessions recommended, 2-4 weeks apart. Reference price: ₩150-300K/session.
Rejuran HB (Black Box) — Deep Hydration
PN formula enhanced with hyaluronic acid (HA) for dual repair + deep hydration. Smoother texture, more comfortable injection. Benefits: All Healer benefits + deep moisture lock, instant glow, improved dryness. Best for: Dry skin, seasonal sensitivity, those wanting immediate radiance. Reference price: ₩200-350K/session.
Rejuran i (White Box) — Eye Area Specialist
Specially developed for the delicate eye area. Smaller PN molecules at refined concentration. Benefits: Reduces dark circles, improves fine lines around eyes, thickens under-eye skin, brightens eye area. Best for: Dark circles, crow’s feet, post-eye surgery recovery. Can be combined with Healer/HB for full-face + eye treatment. Reference price: ₩150-250K/session.
Rejuran S (Blue Box) — Scar Repair
High-concentration PN formula targeting acne scars and atrophic scars. Benefits: Promotes scar tissue remodeling, improves pitted acne scars, enhances skin’s self-repair capacity. Best for: Acne scarring, surgical scars, atrophic scars, enlarged pores. Often combined with laser treatment. Reference price: ₩200-350K/session.
How to Choose Your Rejuran
- Daily maintenance / First-timer → Red Box (Healer)
- Dry skin / Instant glow → Black Box (HB)
- Eye area concerns → White Box (i)
- Acne scar repair → Blue Box (S)
- Best combo → Red/Black full-face + White for eyes + Blue for targeted scars
2. Exosome Therapy — The New Frontier of Regenerative Skincare
Exosomes are the hottest ingredient in Korean dermatology. These nano-sized vesicles secreted by stem cells carry growth factors, mRNA, and proteins that deliver direct “repair signals” to skin cells — more precise and effective than traditional growth factors.
Key benefits: Activates skin self-repair at the cellular signaling level; powerful anti-inflammatory and barrier repair; stimulates new collagen and elastin; improves pigmentation and evens skin tone; accelerates post-procedure recovery. Popular brands: ASCE+, ExoSCRT, Cellthera. Best for: Dull/aging skin, post-procedure recovery, sensitive skin repair. Reference price: ₩300-800K/session.
3. RE2O (리투오) — Human Dermal ECM Skin Booster
RE2O (리투오) is a revolutionary ECM skin booster launched in Korea in 2024. It’s the world’s first injectable product derived from human dermal extracellular matrix (ECM) — delivering real human collagen and elastin directly into your skin.
Core composition: Acellular human allogenic dermis (hADM) microparticles containing 89% collagen + 3% elastin + 7.6% other ECM components + 0.4% hyaluronic acid (GAG). Directly replenishes lost dermal structural components while inducing natural collagen regeneration.
How it differs from traditional boosters: Traditional boosters like Rejuran “stimulate” your skin to produce collagen. RE2O “directly supplies” real human dermal components — more immediate and longer-lasting results.
Benefits: Significant elasticity improvement, pore reduction, fine line smoothing, overall texture upgrade. Results appear gradually over 1-2 weeks, peaking at 2-3 months. Protocol: 3 sessions at 2-3 month intervals initially, then maintenance lasts 12-18 months. Reference price: ₩500-700K/session.
4. Laetigen (레티젠) — 99.9% Pure Collagen Skin Booster
Laetigen (레티젠) is a MFDS-approved (Korean FDA) high-purity collagen injection. Its core ingredient is 99.9% pure Type I collagen — the primary structural protein comprising over 70% of human skin. Laetigen injects collagen identical in structure to your own skin directly into the dermis.
Composition: Type I collagen (99.9% purity) + glycine (stabilizes collagen triple helix). Excellent biocompatibility with minimal rejection risk.
Benefits: Immediate skin firmness and elasticity boost, fine line reduction, pore minimization, improved texture and radiance. Skin feels firmer right after treatment; collagen regeneration peaks at 2-4 weeks. Protocol: Every 4 weeks, 3 sessions per course. Single session lasts 4-6 months; 3+ sessions can last 12+ months. Reference price: ₩300-500K/session.
Laetigen vs RE2O: Laetigen focuses on pure collagen supplementation; RE2O delivers complete ECM matrix (collagen + elastin + more). Both are “direct supply” types with different compositions. Choose based on skin needs or combine them.
5. Other Popular Korean Skin Boosters
NCTF / Filorga: 55 active ingredients (vitamins, amino acids, minerals). Comprehensive nutrition and antioxidation. ₩200-400K. Juvelook: PDLLA collagen stimulator — continued collagen production for 3-6 months. ₩250-500K. Profhilo: Ultra-high concentration HA (64mg/2ml), 5-point injection for bio-remodeling. ₩300-600K.
Who Is It For?
- Dry, dull skin lacking radiance — want deep skin quality improvement
- Enlarged pores, rough texture — seeking baby-smooth skin
- Acne scars, pigmentation — need repair and restoration
- Under-eye fine lines, dark circles — prominent eye area concerns
- Ages 25+ seeking preventive anti-aging maintenance
- Post-laser/thread/surgery — want accelerated recovery
- Needle-phobic but want better skin (try RE2O)
Popular Skin Booster Combinations
- TOP 1 Glass Skin Package: Rejuran Healer + Exosome + RE2O — repair + regenerate + dermal replenishment
- TOP 2 Eye Rescue: Rejuran i (eyes) + Exosome — goodbye panda eyes
- TOP 3 Scar Attack: Rejuran S + Fractional Laser — repair + resurface
- TOP 4 Collagen Direct: Laetigen + RE2O — pure collagen + ECM dual dermal replenishment
FAQ
Q: How often should I get skin boosters? Rejuran: every 2-4 weeks, 3-4 sessions per course. Exosome: every 2-4 weeks. RE2O: every 1-2 weeks. Maintenance frequency can be reduced.
Q: Is it painful? What’s the downtime? Korean clinics apply numbing cream for 20-30 minutes. Minor pinpricks during injection. Rejuran causes small bumps (1-3 days). Exosome and RE2O have virtually no downtime.
Q: Rejuran vs regular skin boosters? Regular boosters mainly use HA (hydration). Rejuran’s PN/PDRN repairs DNA and stimulates collagen — deeper, longer-lasting results.
*Prices are 2026 Seoul Gangnam reference prices, including BeautsGo interpreter service.
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