I think the opinions here about the photos are spot on.
Like so many of us, my family tree ranges quite widely across social classes in the 1800s, but I have a large collection of family photographs from all strands and in all of them they look well dressed and sometimes extremely prosperous, though that was by no means the case for some. I agree that 'Sunday best' meant something then, and certainly still did right up until the 1960s.
I treasure the photos I have, but don't see them as any indicator of status or wealth - it's the faces, and the character, that matter.
As to the not washing as often bit - it wasn't as easy with no running hot water, but I do remember reading not many years ago that if we stopped washing our hair it would become dull or possibly greasy, depending on hair type, but only for a few weeks. After that it would recover and be fine, because washing hair in shampoo is not good for it.
I've often wondered if I could give that a try, but never had the nerve - it's those 4-5 weeks in between that put me off!
Maggie 1895