Collagen Peptides & Skin: What a Major Review of Clinical Trials Found
on February 22, 2026

Collagen Peptides & Skin: What a Major Review of Clinical Trials Found

Featured research

Pu et al. (2023) - Systematic review and meta-analysis of randomized controlled trials on collagen peptides and skin hydration and elasticity.

Why we like this study

If you want the most trustworthy big-picture view of collagen research, meta-analyses are a great place to start. They combine results across multiple randomized controlled trials (often called RCTs), which are among the strongest study designs in nutrition research.

Study snapshot

  • Type: Systematic review and meta-analysis
  • Included studies: Randomized controlled trials
  • Measured outcomes: Skin hydration and skin elasticity

What the researchers found

Across the pooled results, collagen peptide supplementation was associated with:

  • Improved skin hydration
  • Improved skin elasticity

What this means for you

This does not mean collagen changes everything overnight. It means something more practical: in controlled studies, people who took collagen peptides consistently often showed measurable improvements compared with placebo.

How to use this insight

Most collagen studies evaluate outcomes after several weeks. The best way to think about collagen is as a daily routine - consistency first, then reassess how you feel and what you notice over time.

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Read the research

Pu et al. (2023) - Full text

Educational content only. Not medical advice.