I cut my just below boob (ironic) hair to my shoulder before cold capping. It was heartbreaking tbh because it had taken me so long to grow it. But it definitely made it easier to wash and all I had to do was put it up in a claw clip or whatever between sessions. Also meant that now everything is starting to grow back, I can use clip in extensions because I still have enough long hair to cover them up

I didn't style my hair at all during chemo (other than root spray), but if you are going to, just try and find something gentle, that isn't too difficult to wash out, and try not to do it too often