I did not have FSR, but did have GK. I did experience hair loss post GK. I had very thick hair previously, so it was easy for me to notice. My problems started surfacing a few weeks post treatment with an inflamed, itchy, scalp. I developed psoriasis on my scalp. I went on and off different types of steroidal shampoos for a couple of years. I now no longer need them. My hairdresser said my hair changed in both texture and thickness. She would not allow me to color it until a year after my treatment. Even then, the color could not be directly up against my scalp. It definitely did not grow back to the fullness it once was, but then again I am now middle aged, so I think it was a combination of both. I would think my case was not the norm though. Hopefully, you will have a very positive outcome with your hair! I think most people have positive experiences.