Lizbet...I, too, have heard of a product made for follicle stimulation. I heard about it at the salon I go to.
There are some other things you can do too.
1) a lot of people claim that a shorter hair cut makes it easier to deal with.
2) the wig (as lizbet said) or a thickner (weave-like) peice may be something else to think about.
3) hats...I have really come to love hats. I'm not one for wigs because they make me sweat even more than normal!
I hope this helps in some small way!
Hugs,
ladybrannon