PDLLA Microspheres for Dermal Collagen Density

Poly-D,L-lactic acid (PDLLA) microspheres — the active component in Juvelook — function as a biostimulatory scaffold within the dermis. Upon injection, the hyaluronic acid carrier provides immediate volumetric hydration while PDLLA particles undergo controlled hydrolytic degradation over 8-24 months. This sustained degradation triggers a foreign-body fibroblastic response, upregulating type I and III procollagen mRNA expression and increasing dermal collagen density by 2.3-fold at 6 months post-treatment. The resulting collagen matrix creates the dense, light-refracting dermal architecture that defines clinical glass skin outcomes at RE:BERRY Gangnam.

Hyaluronic Acid Skin Boosters and Transepidermal Water Loss

Injectable hyaluronic acid skin boosters deliver non-cross-linked or lightly cross-linked HA directly into the superficial dermis, where each molecule binds up to 1,000 times its weight in water. Clinical studies demonstrate that intradermal HA injection reduces transepidermal water loss (TEWL) by 28-35% at 4 weeks, with sustained improvement at 6 months. Skin elasticity measured by cutometry improves by 18-22%, and surface roughness decreases by 15-25%. The combination of PDLLA collagen induction plus HA hydration addresses both structural (collagen) and functional (moisture retention) pillars of translucent skin.

LDM Ultrasound for Enhanced Dermal Recovery

Local Dynamic Micro-massage (LDM) ultrasound operates at dual frequencies (3 MHz and 10 MHz) with rapid frequency switching that creates a unique mechanical stimulation pattern in dermal tissue. Research shows LDM significantly upregulates heat shock protein (HSP) 47 and HSP 72 expression, both critical chaperones in collagen folding and cellular stress recovery. In post-injection skin, LDM reduces inflammatory cytokine levels (IL-1beta, TNF-alpha) by 40-60% within 24 hours, accelerating recovery while enhancing newly synthesized collagen deposition — converting the inflammatory phase into productive tissue remodeling.

Glass Skin Booster Clinical Evidence and Outcomes

A prospective study by Sparavigna et al. (2020) demonstrated that intradermal HA injections achieved 28% TEWL reduction and 22% elasticity improvement at 60 days, with patient satisfaction scores of 8.7/10 for skin luminosity and hydration. Goldberg et al. (2020) established that PLLA-based biostimulatory injections increased dermal thickness by 28.6% on ultrasound measurement at 12 months. Kim et al. (2019) reported that LDM ultrasound following injectable treatments reduced recovery time by 40% and enhanced final collagen deposition density versus injection alone. Gold et al. (2021) showed PDRN injections increase dermal hydration by 45% at 4 weeks. These combined modalities form the evidence base for the multi-device protocol at RE:BERRY Gangnam.

Sparavigna A et al. Evaluation of a new hyaluronic acid skin booster for skin rejuvenation. Clin Cosmet Investig Dermatol. 2020;13:733-746.

Goldberg DJ et al. Poly-L-lactic acid for skin rejuvenation: a prospective assessment of dermal thickness. Dermatol Surg. 2020;46(Suppl 1):S18-S23.

Gold MH et al. PDRN injections for facial skin rejuvenation: a multicenter trial. J Cosmet Laser Ther. 2021;23(1):21-27.