Dietary Collagen Supplementation as a Strategy for Skin Health: A Narrative Review of Clinical Effects on Skin, Hair, Nails, and Wound Healing

    July 2026 in “ Nutrients ”
    Angelika Bielach-Bazyluk, Marta Jurga, Iwona Flisiak, Edyta Zbroch
    Studysummary This review reports that oral collagen peptide supplements may improve skin elasticity, hydration, and wrinkle appearance while also supporting hair and nail health and wound healing, but emphasizes the need for longer, high-quality studies due to current research limitations and variability in findings.
    Automatically generated from the study's abstract, not written by a person, and not a review of the full paper. Not medical advice or a treatment recommendation. Read the original study, and consult a qualified healthcare professional before changing treatment. Full disclaimer
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    Research cited in this study 5

    1. Low-Molecular-Weight Collagen Peptides Improve Hair Health in Adults with Damaged Hair: A Randomized, Double-Blind, Placebo-Controlled Trial International Journal of Peptide Research and Therapeutics · 2026
    2. Calcium and Vitamin D Supplementation With and Without Collagen on Bone Density and Skin Elasticity in Menopausal Women—A Randomized Controlled Study Clinics and Practice · 2025
    3. Low Molecular Weight Collagen Peptide Promotes Hair Growth by Activating the Wnt/GSK-3β/β-Catenin Signaling Pathway Journal of microbiology and biotechnology · 2023
    4. Efficacy and Tolerability of an Oral Supplement Containing Amino Acids, Iron, Selenium, and Marine Hydrolyzed Collagen in Subjects With Hair Loss: A Prospective, Randomized, 3-Month, Controlled, Assessor-Blinded Study Skin Research and Technology · 2023
    5. Skin Aging: Are Adipocytes the Next Target? Aging · 2016