Does collagen help with hair growth?

Collagen supplements may provide modest benefits for hair thickness and appearance, based on limited studies showing small improvements after 12 to 16 weeks of daily use. Reported effects are generally subtle and may include increases in hair thickness or improvements in hair quality, but there is no strong evidence that collagen increases overall hair count or reverses pattern hair loss. The available evidence is limited, with small study sizes and potential bias, so results may vary and are not comparable to established medical treatments.

Key points:

Collagen is broken down into amino acids that contribute to keratin production, the main protein in hair.
Some studies report small improvements in hair thickness and quality after around 3 months of use.
Benefits appear limited to supporting existing hair rather than promoting new hair growth or treating genetic hair loss.
Research is limited in size and quality, and further evidence is needed.

This text has been fact-checked for accuracy by Sorin Romaniuc, Pharmacist at medino.