I'm 15 and I've got mouth cancer, I have a 5.5cm tumour in my mouth, I'm having chemo, and radiotherapy, I'm on my second lot of chemo and I've lost a lot of hair at the front and back, my hair is tied up in a pony tail as that's how it's stuck because I can't brush it it's all stuck together and if I do try and brush it I think that all my hair would fall out as there is only a small part of hair holding it on my head. Can anyone tell me how fast my hair will come back. And if anyone else's hairbrush got stuck together, I woke up one morning with it stuck together.