Washing hair. I couldn't get in the shower for 3 weeks because the bandages could get wet (and I found the waterproof ones too itchy). I rang my hairdresser and said could they wash my hair every week.

It was the best thing ever as they have really nice couches to lay back on while they washed my hair and then blowed dried it. Because I went in the day during their quiet time, they had the shampoo girls practise blow drying my hair. And the best thing, they didn't charge me for it. It made my crappy accident just a bit better to have nice clean hair.

Otherwise find some dry, spray on shampoo. That helped in the in-between days.