I think you need to explain a bit more!
In prepubescent males castration will prevent male pattern baldness in later life. Once it has occurred it is difficult to reverse, there are drugs that can help hair growth and hair transplants can be very effective I hear.
But taking estrogen will not in itself alter head hair growth in the manner that you seem to allude to.
And estrogen has profound effects on the body.
So I'm not too sure what info you are after!
Cindy
