Everyone responds differently to chemo, but through my own experience and that of those I know - we all lost are hair after the 2nd treatment or approx. 3rd week.  I had cut my hair short(er) in anticipation of it - then it just started falling out in clumps so I shaved my head.  But it also started growing in just after I finished my 4th and final session - so in a way I never went fully bald, though I did have large bald patches and little peach fuzz in other spots!   I've heard the stories about your hair returning in a different color, texture, style - but that's not always the case.  Someone once told me that once it grows back in to immediately shave it again and it will grow back better.  Didn't happen.  I've been cursed with the same coarse, curly, thick, blonde hair since birth.  I'd love for my hair to come in straight, but I think that such tales are myths really.  LOL.  Besides, everyone is different and responds differently.  So there's really no telling what your journey will be like.  But good luck to you - fingers crossed that you get exactly what you want! Angi