Low-Molecular-Weight Collagen Peptides Improve Hair Health in Adults with Damaged Hair: A Randomized, Double-Blind, Placebo-Controlled Trial

    January 2026 in “ International Journal of Peptide Research and Therapeutics ”
    Yu-ri Gwon, A Reum Kim, Mi Hye Seo … Miyoung Park
    Studysummary In this study, adults with mild-to-moderate hair damage taking GPVGPS Collagen® daily for 24 weeks showed significant improvements in hair luster, strength, thickness, and density compared to placebo, with no safety concerns reported.
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    4. Integrative and Mechanistic Approach to the Hair Growth Cycle and Hair Loss Journal of Clinical Medicine · 2023
    5. Morphogenesis, Growth Cycle, and Molecular Regulation of Hair Follicles Frontiers in Cell and Developmental Biology · 2022
    6. Twelve-Point Scale Grading System of Scanning Electron Microscopic Examination to Investigate Subtle Changes in Damaged Hair Surface Skin research and technology · 2016
    7. Age-Dependent Changes in Damage Processes of Hair Cuticle Journal of cosmetic dermatology · 2015
    8. Photoaging of Hair Fiber and Photoprotection Skin pharmacology and physiology · 2009
    9. Photoaggravation of Hair Aging International Journal of Trichology · 2009
    10. Hair Shaft Abnormalities: Clues to Diagnosis and Treatment Dermatology · 2005