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Benefits of Collagen Peptides

Evidence:Strong
·

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Evidence-Based Benefits

  • Skin hydration — a 2019 meta-analysis of 11 RCTs (n=805) found oral collagen peptides significantly improved skin hydration vs. placebo after 8 weeks (de Miranda et al., 2021)
  • Skin elasticity — an 8-week RCT (n=69) showed 2.5 g/day of collagen peptides increased skin elasticity by 7% vs. placebo (Proksch et al., 2014)
  • Wrinkle reduction — a 12-week RCT (n=114) found collagen peptide supplementation reduced eye wrinkle volume by 20% compared to placebo (Proksch et al., 2014)
  • Dermal collagen density — an 8-week study (n=53) demonstrated oral collagen increased procollagen type I expression by 65% in skin biopsies (Asserin et al., 2015)
  • Nail and hair support — a 24-week RCT (n=25) found collagen peptides increased nail growth rate by 12% and reduced nail breakage by 42% (Hexsel et al., 2017)

What the Research Says

Collagen peptides have been extensively studied for their benefits in skin health and beyond. A systematic review by de Miranda et al. (2021) analyzed 19 studies involving 1,125 participants, concluding that hydrolyzed collagen supplementation at doses between 2.5 to 10 g/day improved skin hydration, elasticity, and wrinkle metrics compared to placebo. Proksch et al. (2014) further demonstrated in two randomized controlled trials that specific collagen peptides enhanced skin elasticity and reduced wrinkle volume within 4-8 weeks.

Recent studies continue to validate these findings. Lee et al. (2025) conducted a randomized, double-blind, placebo-controlled trial with 70 adults, showing that low-molecular-weight collagen peptide supplementation significantly improved skin elasticity, hydration, and reduced wrinkle depth after 8 weeks. Similarly, Seong et al. (2024) reported positive effects on skin health in a study involving 100 participants.

Beyond skin benefits, integrative reviews such as Inacio et al. (2024) have analyzed multiple studies, confirming the role of collagen peptides in mitigating muscle stress from strenuous exercise. This broadens their applications to include support for muscle recovery and overall health.

Related Conditions

Skin HealthWound HealingHair Loss
Full Collagen Peptides Guide

References

  1. de Miranda RB, Weimer P, Rossi RC. (2021). Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis. International Journal of Dermatology. DOI PubMed
  2. Proksch E, Segger D, Degwert J, et al. (2014). Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Skin Pharmacology and Physiology. DOI PubMed
  3. Asserin J, Lati E, Shioya T, Prawitt J. (2015). The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network. Journal of Cosmetic Dermatology. DOI PubMed
  4. Hexsel D, Zague V, Schunck M, et al. (2017). Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails. Journal of Cosmetic Dermatology. DOI PubMed
  5. Bolke L, Schlippe G, Gerss J, Voss W. (2019). A collagen supplement improves skin hydration, elasticity, roughness, and density: results of a randomized, placebo-controlled, blind study. Nutrients. DOI PubMed
  6. Lee E, Ahn DK, Kim JH, Lee S, et al. (2025). Skin Anti-Aging and Moisturizing Effects of Low-Molecular-Weight Collagen Peptide Supplementation in Healthy Adults: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial.. Journal of microbiology and biotechnology. DOI PubMed
  7. Seong SH, Lee YI, Lee J, Choi S, et al. (2024). Low-molecular-weight collagen peptides supplement promotes a healthy skin: A randomized, double-blinded, placebo-controlled study.. Journal of cosmetic dermatology. DOI PubMed
Show 5 more references
  1. Inacio PAQ, Gomes YSM, de Aguiar AJN, Lopes-Martins PSL, et al. (2024). The Effects of Collagen Peptides as a Dietary Supplement on Muscle Damage Recovery and Fatigue Responses: An Integrative Review.. Nutrients. DOI PubMed
  2. Inacio PAQ, Chaluppe FA, Aguiar GF, Coelho CF, et al. (2024). Effects of Hydrolyzed Collagen as a Dietary Supplement on Fibroblast Activation: A Systematic Review.. Nutrients. DOI PubMed
  3. Thomas C, Kingshott RN, Allott KM, Tang JCY, et al. (2024). Collagen peptide supplementation before bedtime reduces sleep fragmentation and improves cognitive function in physically active males with sleep complaints.. European journal of nutrition. DOI PubMed
  4. Vleminckx S, Virgilio N, Asserin J, Prawitt J, et al. (2024). Influence of collagen peptide supplementation on visible signs of skin and nail health and -aging in an East Asian population: A double blind, randomized, placebo-controlled trial.. Journal of cosmetic dermatology. DOI PubMed
  5. Kviatkovsky SA, Hickner RC, Cabre HE, Small SD, et al. (2023). Collagen peptides supplementation improves function, pain, and physical and mental outcomes in active adults.. Journal of the International Society of Sports Nutrition. DOI PubMed