Collagen for Skin Elasticity & Wrinkles
Small collagen-derived peptides (e.g., Gly-Pro-Hyp) absorbed into the bloodstream are proposed to signal dermal fibroblasts to synthesize new collagen, elastin, and hyaluronic acid, improving skin firmness and reducing wrinkle depth.
How strong is the research?
Across 23 RCTs, collagen supplements significantly improved hydration, elasticity, and wrinkles overall, but in subgroup analysis, trials without industry funding showed no effect on any outcome (only industry-funded trials did), and high-quality trials showed no significant effect in any category, while only low-quality trials showed a significant elasticity improvement. Authors concluded there is currently no clinical evidence supporting collagen supplements for preventing or treating skin aging. Study declared no funding and no conflicts of interest.
How much to take
1–5 g