Tykerb hair thinning - how bad does it get?

[nywam]

I have been on tykerb for about 6 months, currently on 4 pills after being dose reduced. I have absolutely noticed the thinner hair and I am kind of nervous about how thin it will actually get. Can anyone who has been on tykerb longer let me know if it keeps thinning and thinning? I don't have bald spots or anything, but I'd like to be prepared for just how thin it will get as I wasn't expecting the hair changes.
Also, I have a few more months to go on tykerb then I'm done. Does anyone know for sure if the hair returns to how it was before tykerb? I know when you lose your hair on chemo it comes back after you stop chemo, but I am totally unfamiliar if after you stop a drug like tykerb the hair returns to normal.....
Thanks for any insights anyone can offer, I feel so silly for being so concerned about my hair... but I miss my thick hair!!!!!