If hair is saved after Cold Cap with Paclitaxel, when can hair be treated normally. Ie colouring etc

I presume that is brushed or combed. Lots of volume.
You kept your hair long through out. When did your hair feel strong and normal?
Have you had any hair thinning with your hormone therapy?
I start that (I think he said Letrazole) after my radiotherapy, which starts late  August.
Thanks to kezmusc and stargirl for your advise.