When I was in Vancouver BC, a couple of years ago, a Department Store restroom that I was in, had a sign at the sinks, that said something like, "Brushing your teeth? Please use a vanity stall". The vanity stalls were just a larger stall. They had a sink, and a mirror, with nice lighting. I guess the idea was, others might not want to see you brush your teeth, and, you could fuss with your make up, without blocking someone else, who, just needed to wash their hands.