Thanks for the replies

Be careful with Rogain as according to my doctor it can cause low blood pressure and is really only useful for hereditary hair loss. I have found that washing my hair often helps as there seems to be a lot of scalp build up. mY hair falls out more if it is unwashed and oily (on top yet the ends are brittle). I now use a peppermint shampoo (Tigi).

I do think that it is possible eyebrows fall out because the function of the eyebrows no longer exists (to stop sweat falling in the eyes) The body is quite adaptive.

Madonna