What is the best type of collagen for hair?

Type I and Type III collagen from bovine or marine sources are commonly used for hair, as they contribute to the structural support of skin and may help maintain scalp health. These types contain amino acids such as glycine and proline, which are involved in keratin production, the main protein in hair. Hydrolysed collagen, including marine-derived collagen, is often used due to its improved absorption.

Key points:

  • Type I collagen is the most abundant form and supports the structural integrity of skin and hair.
  • Type III collagen is associated with skin elasticity and scalp support.
  • Marine and bovine sources are commonly used and provide collagen peptides.
  • Evidence for direct hair growth effects is limited, although collagen provides amino acids relevant to hair structure.

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