Poly-D,L-Lactic Acid Scalp Microinjection Protocol With Optional Light Microneedling Priming For Non-Scarring Alopecia: A Prospective Pilot Case Series

    January 2026 in “ JPRAS Open ”
    Olena Sydorchuk, Jino Kim, Jong Keun Song … Kyu-Ho Yi
    Studysummary In this pilot study, PDLLA scalp microinjections showed improvement in physician-rated Global Aesthetic Improvement Scale scores over 12-24 weeks for 90% of patients with non-scarring alopecia, with no serious adverse events reported, although findings remain preliminary due to methodological limitations.
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    7. A Randomized Evaluator Blinded Study of Effect of Microneedling in Androgenetic Alopecia: A Pilot Study International Journal of Trichology · 2013