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Do collagen supplements give you younger skin?
Benefits show up mainly in industry-funded, lower-quality trials; independent trials found none.
What you hear: “Drinking collagen powder every day gives you younger, firmer, less wrinkled skin.”
What the studies found
A 2025 pooled analysis of 23 randomised trials (1,474 people) found improved skin hydration, elasticity and wrinkles overall, but trials not funded by companies and the high-quality trials showed no effect. An earlier pooled analysis of 19 trials reported benefits after about 90 days without that split. So results conflict and depend on who paid and how well the study was done.
What you could do
Collagen is optional: the trials that found younger-looking skin were mostly lower quality or paid for by companies.
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Not medical advice. General information from published studies, not a diagnosis or a treatment plan. Talk with your doctor before starting a supplement or changing a medicine, especially if you are pregnant, take other medicines or have a health condition.
How we judged it
Not proven: Not enough good human evidence yet, either way. We judge the claim as it is usually said online, not the habit itself. Trials assign people at random, so they can show cause; observed studies follow people and show a link, not proof. Last checked: October 2026.
The studies, in their own words
- Myung and Park. Am J Med 2025
studies not receiving funding from pharmaceutical companies revealed no effect of collagen supplements for improving skin hydration, elasticity, and wrinkles
- de Miranda et al. Int J Dermatol 2021
ingestion of hydrolyzed collagen for 90 days is effective in reducing skin aging, as it reduces wrinkles and improves skin elasticity and hydration.
More claims, checked
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- Doesn't hold upSeed oils are toxic
- Doesn't hold upRaw milk
- Doesn't hold upAlkaline water and alkaline diet
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