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the claim
Collagen supplements improve skin elasticity and hydration
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
6 sources for · 0 against

Multiple systematic reviews, meta-analyses, and randomized controlled trials consistently demonstrate that oral supplementation with hydrolyzed collagen and collagen peptides significantly improves skin hydration, elasticity, and overall signs of aging.

Evidence for · 6
Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta‐analysis
2021 · cited by 121
A systematic review and meta-analysis of clinical trials concluded that hydrolyzed collagen ingestion for 90 days improves skin elasticity and hydration while reducing wrinkles.
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The analysis

The provided literature consists of multiple randomized controlled trials, systematic reviews, and meta-analyses that unanimously support the claim that collagen supplements improve skin hydration and elasticity. There are no papers in the retrieved set that refute or contradict this finding.

More for · 5
Oral Supplementation of Collagen Peptides Improves Skin Hydration by Increasing the Natural Moisturizing Factor Content in the Stratum Corneum: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial
2021 · cited by 43
A randomized controlled trial demonstrated that oral ingestion of collagen peptides increases skin water content and decreases transepidermal water loss through elevated natural moisturizing factor levels.
A Clinical Trial Shows Improvement in Skin Collagen, Hydration, Elasticity, Wrinkles, Scalp, and Hair Condition following 12‐Week Oral Intake of a Supplement Containing Hydrolysed Collagen
2024 · cited by 15
A randomized clinical trial found significant improvements in skin hydration and elasticity following 12 weeks of oral hydrolysed collagen intake.
The Oral Intake of Specific Bovine-Derived Bioactive Collagen Peptides Has a Stimulatory Effect on Dermal Matrix Synthesis and Improves Various Clinical Skin Parameters
2025 · cited by 6
A clinical trial showed that daily oral supplementation with bovine-derived bioactive collagen peptides significantly improved skin elasticity and hydration within weeks.
A Comprehensive Analysis of Hydrolyzed Collagen Supplementation Effects on Skin Aging and Texture and Its Potential Benefits for Osteoarthritis
2025 · cited by 1
A randomized controlled trial observed significant increases in skin elasticity, hydration, and reductions in wrinkle depth after 12 weeks of hydrolyzed collagen supplementation.
Collagen, Curcumin, and Glutathione to Enhance Dermal Health in Aging Women with Declining Estrogen Levels -A Narrative Review.
2026 · cited by 0
A narrative review of recent clinical studies supports collagen as an effective nutraceutical treatment showing improvement in various skin attributes.
The paper trail · every fact has a biography
first checked04 Aug 2026
judged → SUPPORTED · 8804 Aug 2026
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