Poly-D,L-Lactic Acid Filler Restores Hair Thickness and Shine by Ameliorating Age-Associated Follicular Decline

    February 2026 in “ International Journal of Molecular Sciences ”
    Seyeon Oh, Hosung Choi, Junsu Kim … Kyunghee Byun
    Studysummary This study found that PDLLA filler treatment may help combat age-related hair thinning by reducing oxidative stress and enhancing hair follicle function in both cell and animal models.
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