I'm torn on this, as part of me wants to say, YOU are the parent & YOU lay down the rules NOt DD - BUt, I've had similar issues with my own DD for thankfully short periods of time & realise that in part it was also just another attention seeking thing
- ignoring it & not forcing the issue was actually the best way to deal with my DD through these periods
She also gave me hell over socks & pants & some clothes too - sensitive yes - awkward & wilful, doubly so
but you pick your battles & in doing so you win the war
DD still doesn't like socks,seamless included, but she no longer makes a fuss, she just always pulls the toes down & folds them under her feet as it feels more comfortable that way
& she chooses her own knickers, preferring the microfibre shorts cut type without elastic in the waist.
& I agree its a complete myth that hair needs washing so often - I just wish I hadn't bought into it with my own hair that looks like a scraggy mop if not washed at least every 2 days - DD on the other hand can go a week & often more & still look freshly washed & shiny - we did have a similar problem over hair washing,
lasted 3 weeks until I got her washing her own, she wasn't brilliant at it, but it always looked fine when dried
& no, headlice where never a problem as a result, she's rarely had them & we DO check thoroughly
I'd recommend trying to get her into washing her own - after all, its what "big girls do" - it worked for mine