ok i havent done much research on that issuse but maybe some of u guys might know it.... ( i was too lazy) .... igf-1 help u grow ur muscles and stuff like that not going into details here but wouldnt it be alose able to grow hair?? even for people that are loosing it..... i was just wondering cuz i stumbled upon a hair loss forum and they r all despret there maybe that stuff could help.......... and no im not gettin bold hehe