If they work I suspect it will take a great deal of time before you get result as hair (except for the root) is dead.
I noticed that after several months of taking zink supplements that I was starting to have less hair breakage.
I noticed that after several months of taking zink supplements that I was starting to have less hair breakage.
wow. ok. thankyou! 
. Sorry its a bit vague, but was just flicking through and it caught my eye but have no idea of the breakdown of the group tested - i.e. how many, age, diet of those tested etc. On the other hand I have heard before how good EPO is so I figure no harm in trying 