• Question: what makes eyebrows only grow above your eyes?

    Asked by mollieet to Mike, Pip, Tianfu, Tim, Tom on 28 Jun 2012.
    • Photo: Tom Lister

      Tom Lister answered on 28 Jun 2012:

      Hair is classified as either ‘terminal’ like the hair on my head, or ‘vellous’ like the hair on my arms. Some follicles that grew vellous hairs can change to grow terminal hairs (like when boys begin to grow beards), and this is usually stimulated by androgens.

      Some follicles don’t do this though, so they must not have the capacity? I’m not really sure what causes this difference between different follicles.

    • Photo: Tim Stephens

      Tim Stephens answered on 28 Jun 2012:

      No idea, but it’s probably to do with genes.

Comments