Re2O vs Rejuran Choosing the Right Skin Booster in Korea
A clinical guide from Dr. Kim Minseung (김민승 원장) at Inee Clinic (이니의원, Apgujeong, Seoul) for international patients comparing skin boosters in Korean dermatology.
Rejuran (리쥬란, Rejuran) is a long-standing skin booster, and Re2O (리투오, Re2O) is a more recent option drawing attention. The common question in consultation is "which one works better?" but the more useful question is "what does my skin need right now?" Below is how the two are positioned in Korean dermatology.
Why the Choice Is Often Confusing
Both are described as "regenerative" boosters, but their mechanisms are different. Rejuran sends "regeneration signals" through salmon-derived DNA fragments. Re2O directly supplies the ECM (extracellular matrix) the dermis is missing, using a human-derived scaffold. Rejuran is closer to fertilizing the soil; Re2O is closer to replacing soil that has been lost.
How Rejuran Works
Rejuran's main ingredient is PN (polynucleotide), DNA fragments extracted from salmon germ cells. The structure is reported to be highly biocompatible with human DNA.
- Regeneration signaling: binds adenosine receptors and supports cell proliferation and microvascular activity.
- DNA repair support: provides nucleic acid fragments used as building blocks for self-repair.
- Targeted lineup: Healer for general face, HB+ for hydration, Eye (i) for periorbital, S for scars.
How Re2O Works
Re2O (Elravie Re2O) is an ECM skin booster based on hADM (human acellular dermal matrix). Instead of stimulating skin to produce something, it directly supplies a structural matrix similar to human dermis.
- Direct ECM replacement: collagen (types I and III), elastin and GAGs come in a 3D structure that adds dermal density on placement.
- Human-tissue origin: cells and immunogenic components are removed; positioned as a tissue scaffold with high biocompatibility in principle.
- Long-term remodeling: the implanted scaffold is gradually replaced by the patient's own tissue over months.
When skin is thin with loose pores, I tend to lead with Re2O for density. For patients needing overall conditioning and regeneration signaling, Rejuran is the lead choice. The two are complementary rather than competing.
Frequently Asked Patient Questions
Q. Is Re2O significantly more expensive because it is human-derived?
A. Re2O is positioned above standard hydration boosters in price due to its processing chain. Compared to Rejuran, its longer maintenance and direct structural support tend to balance the cost.
Q. Is the surface bumpiness milder than Rejuran?
A. Usually yes. Rejuran's high-viscosity placement can leave embossing for 3-7 days, while Re2O typically resolves within 1-2 days.
Q. When do results appear?
A. Rejuran tends to deliver a "watery glow" 1-2 weeks in. Re2O often gives a "density glow" almost immediately, with elasticity building over time.
Chat with our team about the right skin booster for you
When Rejuran Is the Better Starting Point
- Hydration and oil balance feels off; skin is reactive.
- Fine lines becoming noticeable; regeneration speed has slowed.
- Sensitive skin that finds aggressive laser uncomfortable.
- Need for periorbital or scar-targeted care.
When Re2O Tends to Fit Better
- Dermis is thinner; skin feels limp and lacks structure.
- Pores are stretched vertically; texture is rough.
- Volume and elasticity needed around the eye area together.
- Preference for fewer sessions with longer maintenance.
Side-by-Side Comparison
| Item | Rejuran (리쥬란) | Re2O (리투오) |
|---|---|---|
| Core ingredient | Salmon-derived PN | Human-derived hADM (ECM) |
| Main action | Regeneration signaling | Direct ECM scaffold, density |
| Best for | Reactive skin, fine lines, overall recovery | Thin dermis, pore looseness, density |
| Embossing | Around 3-7 days | Around 1-2 days |
| Maintenance | 4-6 months (3+ sessions recommended) | 6-18 months (individual variation) |
Written by Dr. Kim Minseung (김민승 원장), Inee Clinic, Apgujeong, Seoul. View doctor's profile
Last reviewed: 2026-05-30
Keywords: Re2O Korea, Rejuran Korea, Korean dermatology, K-beauty clinic Seoul, ECM skin booster, skin booster comparison