The claim
Rebuilds skin collagen, reduces wrinkles, and improves elasticity from the inside.
What the evidence says
Meta-analyses of randomized trials report small improvements in measured hydration and elasticity over 8–12 weeks, but most trials are short, industry-funded, and use instrument outcomes rather than visible change; a 2025 analysis of higher-quality trials found the effect shrinks when industry trials are excluded. Supplements are not reviewed by FDA for effectiveness before sale.
Who should skip it
Anyone with fish or shellfish allergy using marine collagen; people spending on it instead of sunscreen and a retinoid.
What to do instead, or as well
Sunscreen and a retinoid have randomized evidence for the same goal; keep collagen if you like it, but expect little.
Sources on file
These links support the claims above. Reviewed September 1, 2026.
- Am J Med 2025 — collagen supplements and skin aging: meta-analysis of RCTs (PubMed) (opens in a new tab)
- Int J Dermatol 2021 — hydrolyzed collagen supplementation and skin aging: meta-analysis (PubMed) (opens in a new tab)
- Arch Dermatol Res 2024 — cosmeceuticals for anti-aging: systematic review (PubMed) (opens in a new tab)