I remember when I used to sleep in these brush rollers. They ended up on the floor beside my bed by morning! I slept on the huge ones. Had thick hair in those days. Didn't feel the rollers, but my head was a foot off the pillow.
Mum used to buy this to clean the stainless steel kitchen sink as well as the porcelain bath and bathroom sink. It took the shine away as well as the dirt. It also tended to clump in the cardboard tube which got damp over time.