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Poly-L-Lactic Acid in Atrophic Acne Scars
Sponsor: Zagazig University
Summary
Background: Management of atrophic acne scars remains challenging due to their heterogeneous morphology and suboptimal response to conventional therapies. Poly-L-lactic acid (PLLA), a biostimulatory agent, promotes neocollagenesis and has emerged as a promising therapeutic option. However, comparative data on different delivery modalities of PLLA and their effects on dermal remodeling and skin physiology remain limited. Objective: To compare two delivery modalities of PLLA (injectable versus mono-thread) and evaluate their effects on dermal remodeling, clinical outcomes, and safety in atrophic acne scars. Methods: This prospective split-face study included 24 patients with atrophic acne scars. The right facial side was treated with a single session of PLLA mono-threads, while the left side received two sessions of injectable PLLA at 6-week intervals. Clinical outcomes were assessed using Goodman and Baron's qualitative and quantitative grading systems over a 3-month follow-up period.
Official title: Poly-L-Lactic Acid: A Comparative Study of Injectable and Thread-Based Delivery in Atrophic Acne Scars
Key Details
Gender
All
Age Range
18 Years - 40 Years
Study Type
INTERVENTIONAL
Enrollment
52
Start Date
2026-03-15
Completion Date
2027-03-15
Last Updated
2026-09-18
Healthy Volunteers
Yes
Conditions
Interventions
injectable PLLA
The vial was reconstituted with 8 mL of bacteriostatic sterile water for injection (BSWFI). After at least 2 hours, 2 mL of lidocaine (1-2%) with epinephrine was added, making the total solution volume 10 mL. One hour later, the vial was gently shaken, and the syringes were prepared for injection. The injection was given using 28-G needles beneath each scar with a serial injection technique during each session.
PLLA threads
On the right side of the face, PLLA threads were used in a single session. Approximately 8-10 Everline PLLA mono-threads
Locations (1)
Zagazig University Hospitals
Zagazig, Sharqia Province, Egypt