I too have noticed this odd phenomenon, and I have a theory that possibly accounts for part of it.
Years ago I was a volunteer for a service that provided company for elderly people who were almost house-bound. I soon became good friends with my elderly person, and visited Bertha almost every week for eight years, until sadly, she died.
She had a couple of hospitalisations and during one of these I realised the importance of The Perm to little old ladies. Bertha’s perm had grown out and her hair was straight, white and scary. It stuck out all over the place, and she looked like a derelict person.
Then I visited one day just after the travelling heirdresser, and suddenly she looked like her old self. Those little sausage curls, slight blue tinge, really make a difference to the way an elderly lady presents herself to the world.
It’s because white hair is, what, more porous? It certainly doesn’t lie down flat and shinily limp, like hair in the Pantene (Australian shampoo, very effective) commercials. It tends to stick up and out. I have a few white hairs in my moustache and they are sometimes so stubborn about which way they’re going to lie that I just cut them out. I do! I just cut them out and - sorry I was getting a bit campy there. Anyway…
If you are aged, and if your white hair is to be treated, the close curl perm is one of the few options available, and certainly one that’s usually flattering to the older face.
So part of the homogenous look is because all those ladies have variations on a basic hairstyle - the hairstyle that puts bread into the mouths of thousands of children of suburban hairdressers.
There - that’s my theory, and I’m both glad to have an opportunity to share it, and glad to share it with you, dear Kambuckta, whose absence has been painful, and the sight of whose name in a thread is, indeed, of immediate beneficial effect for painful ocular episodes.
Russettmaster