Twice a week, usually mid week and at the weekend though tbh I could probably leave it longer nowadays.
It's long, past bottom of shoulder-blade length and white. I use collagen and biotin shampoo and conditioner, as it thinned post covid (fell out in handfuls at the time). I just wash, rinse well, leave it in a towelling turban while all the other bodily self-assembly is done, then comb through with a wide-tooth comb and leave it to dry itself.
Yesterday was a helmet hair day, as out on my motorbike (flat, with strange ridges here and there - the hair, not the bike!). It's sorting itself out today as normal.