Rejuran for Under Eyes Korea — Dark Circles & Fine Lines

PDRN Mechanism: How Polynucleotides Regenerate Under-Eye Skin

Polydeoxyribonucleotide (PDRN) is extracted from salmon DNA and consists of polynucleotide chains ranging from 50-2,000 base pairs. When injected into the dermis, PDRN activates the adenosine A2A receptor pathway, which triggers a cascade of anti-inflammatory and tissue-regenerative responses. In the periorbital zone, this mechanism is particularly valuable because the ultra-thin skin (0.3-0.5mm) has limited intrinsic repair capacity. Kim et al. (2019) demonstrated that PDRN increased fibroblast proliferation by 41% and procollagen type I synthesis by 33% in human dermal fibroblast cultures. This regenerative capacity makes Rejuran for under eyes Korea fundamentally different from volumizing fillers — PDRN rebuilds the damaged dermal matrix from within.

Clinical Outcomes of Periorbital PDRN Injection

A prospective study by Yoon et al. (2020) evaluated 52 patients receiving PDRN injections for infraorbital dark circles and fine wrinkles. At 12 weeks post-treatment, investigators measured a 37% improvement in skin elasticity (elasticity assessment) and a 29% reduction in transepidermal water loss (TEWL). Patient satisfaction scores exceeded 80% for both dark circle improvement and fine line reduction. The study reported 0 cases of Tyndall effect, granuloma formation, or product migration — complications that occur in 5-8% of under-eye hyaluronic acid filler procedures. At RE:BERRY Myeongdong, we build on these findings by combining Eye Rejuran with laser toning to address both structural and pigmentary components of dark circles.

Rejuran HB+ vs Standard Rejuran for the Periorbital Area

Rejuran HB (Hyaluronic Booster) combines PDRN with non-crosslinked hyaluronic acid, creating a dual-action formulation providing both regenerative stimulation and immediate hydration. Park et al. (2021) compared standard PDRN injections with PDRN-HA combination products in 78 patients and found the combination group achieved 23% greater improvement in skin hydration at 8 weeks while maintaining equivalent collagen stimulation markers. This is why RE:BERRY Myeongdong's comprehensive Rejuran for under eyes Korea package includes both Rejuran HB+ 4cc for the surrounding facial area and specialized Eye Rejuran 2cc for the delicate infraorbital zone, ensuring seamless rejuvenation without demarcation lines.

Safety Profile and Contraindications

PDRN has an established safety profile with over 15 years of clinical use in wound healing and aesthetic medicine. The salmon-derived polynucleotides undergo rigorous purification to remove proteins and potential allergens, resulting in a biocompatible product with minimal immunogenic risk. Side effects are limited to transient injection-site reactions — micro-papules (100% of patients, resolving in 24-48 hours), mild ecchymosis (15-20% of patients), and temporary swelling (30-40% of patients). Serious adverse events are exceedingly rare (<0.1%). The treatment is contraindicated in patients with salmon allergies, active periorbital infections, or autoimmune conditions affecting skin integrity.

Kim TH et al. Int J Mol Sci. 2019;20(16):3936. doi:10.3390/ijms20163936

Yoon SY et al. J Cosmet Dermatol. 2020;19(10):2689-2694. doi:10.1111/jocd.13329

Park KY et al. Dermatol Ther. 2021;34(1):e14602. doi:10.1111/dth.14602