I could sit on my hair before I had it cut when I was about 14, my mother had it made into what was called a switch, which I still have. (I had never been to a hairdressers before, and was very impressed by the individual wood panelled cubicles). It was ‘treated’ so that it is just the same now, more than 60 years later. A couple of years ago I did offer it to the charity, but as it had already been treated they could not accept it.
Over the years it has been a useful guide as to what colour my hair should be, but now it is grey, no longer relevant.