Rejuran vs Juvelook Which Skin Booster Is Better? Expert Comparison at RE:BERRY Myeongdong Seoul

Rejuran PDRN: Adenosine A2A Receptor-Mediated Tissue Repair

Polydeoxyribonucleotide (PDRN) is a biological polymer with a molecular weight of 50-1,500 kDa extracted from salmon (Oncorhynchus keta) sperm DNA through purification and sterilization. PDRN activates adenosine A2A receptors on the surface of fibroblasts, endothelial cells, and inflammatory cells, triggering a cascade of tissue repair responses. A2A receptor activation increases intracellular cyclic AMP (cAMP) levels, which stimulates vascular endothelial growth factor (VEGF) production, promotes fibroblast proliferation, and suppresses pro-inflammatory cytokines (TNF-alpha, IL-6). Kim et al. (2018) demonstrated that intradermal PDRN injection significantly increased dermal thickness, collagen density, and skin hydration in a prospective clinical study — with 89% of subjects showing measurable improvement in skin elasticity at 4 weeks post-injection. The anti-inflammatory properties make Rejuran particularly effective for post-procedure recovery and chronically sensitized skin conditions. PDRN also serves as a salvage pathway for nucleotide synthesis, providing the building blocks for DNA repair in UV-damaged keratinocytes.

Juvelook PDLLA: Biodegradable Collagen Biostimulation

Juvelook contains poly-D,L-lactic acid (PDLLA) microspheres (40-70 micrometers diameter) suspended in non-crosslinked hyaluronic acid (HA). Unlike Rejuran’s biological repair mechanism, Juvelook works through a foreign body response: PDLLA microspheres are gradually phagocytosed by macrophages over 8-12 weeks, and this controlled degradation process stimulates surrounding fibroblasts to produce new type I and type III collagen. The non-crosslinked HA component provides immediate hydration and serves as a carrier matrix for uniform PDLLA distribution. Compared to the older poly-L-lactic acid (PLLA) technology used in Sculptra, PDLLA microspheres are amorphous rather than crystalline, resulting in more uniform degradation, fewer granuloma risks, and smoother collagen deposition. A clinical study by Park et al. (2020) showed that PDLLA-based injections increased dermal collagen density by 67% at 12 weeks as measured by high-frequency ultrasound, with clinical improvements persisting for up to 24 months post-treatment.

PDRN vs PDLLA: Complementary Mechanisms for Skin Rejuvenation

The fundamental distinction between Rejuran and Juvelook lies in their biological pathways: PDRN is a repair signal that tells existing cells to heal and proliferate, while PDLLA is a structural stimulus that forces new collagen synthesis through controlled biodegradation. This makes them complementary rather than competing treatments. RE:BERRY Myeongdong’s rotation protocol — alternating Rejuran and Juvelook sessions every 4-6 weeks — leverages both pathways simultaneously. The Rejuran session repairs cellular damage and boosts hydration in the superficial dermis, while the subsequent Juvelook session stimulates deep collagen architecture. This multi-mechanism approach to skin boosting produces more comprehensive and longer-lasting rejuvenation than either product alone, which is why RE:BERRY Myeongdong frequently recommends it for patients seeking glass skin results.

Kim TH et al. J Cosmet Dermatol. 2018;17(5):838-843. doi:10.1111/jocd.12440

Park KY et al. Dermatol Ther. 2020;33(6):e14236. doi:10.1111/dth.14236

Squadrito F et al. Mol Med. 2017;23:1-8. doi:10.2119/molmed.2016.00249