Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis
de Miranda RB, Weimer P, Rossi RC
Published in International Journal of Dermatology
Methodology
Systematic review and meta-analysis of 19 randomized, placebo-controlled trials of oral hydrolyzed collagen (2.5-10 g/d, 8-24 weeks) assessing skin hydration, elasticity and wrinkles.
Key Findings
Hydrolyzed collagen supplementation significantly improved skin hydration and elasticity compared with placebo, with favourable effects on wrinkle depth.
Conclusions
Oral hydrolyzed collagen supplementation appears to improve skin hydration and elasticity in adults.
Limitations
Most included trials were industry-funded, short in duration, and used heterogeneous collagen sources and measurement devices.
Supplements Studied
Hydrolyzed collagen supplementation improved skin hydration, elasticity and wrinkle appearance across randomized trials.
Outcomes Measured
Hydrolyzed collagen supplementation significantly improved skin hydration and elasticity compared with placebo.
Hydrolyzed collagen improved wrinkle appearance and skin hydration.
Hydrolyzed collagen supplementation improved skin elasticity across randomized trials.
Hydrolyzed collagen supplementation significantly improved skin hydration and elasticity compared with placebo, with favourable effects on wrinkle depth.
Study Details
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Disclosures
Funding
Not commercially funded (academic review)
This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.