Collagen Peptides, Skin Hydration and Elasticity

What collagen is

Collagen is the main structural protein of connective tissues and makes up roughly 80% of the dry weight of human skin.^[1]

What the pooled trials report for skin

In adults, pooled randomized-trial evidence suggests that oral collagen peptide supplementation may modestly improve skin hydration and elasticity. Across the trials, collagen peptides were studied at about 2.5 to 10 grams per day.^[1]

What do hydration and elasticity measurements actually establish?

The pooled studies suggest modest changes in measured hydration and elasticity, with considerable variation and possible bias. These endpoints should not become a promise that every wrinkle disappears or that the same effect follows from every powder, gummy, or capsule. Most participants were adult women, and the studied amounts and preparations varied.^{[1], [2]}

A daily regimen over several weeks describes trial exposure, not a universal best time of day or a guaranteed visible response. When comparing a product with the research, look for the actual hydrolyzed-collagen preparation, studied population, duration, and measured endpoint. The pooled abstracts do not identify one standardized amount that is optimal for everyone.^{[1], [2]}

Read the concise FAQ answer

Use the FAQ when you want the direct answer first, then return here for the full evidence context.