The ring I have is made of a soft foam and just pulls over the top of the head leaving the hair exposed. I bought ours about 10 years ago but I would think they are still made. Perhaps mothercare have them?

i had the same problem with a few of my daughters.......my mother told me to lay them on the counter in the kitchen, put a towel under their necks while hanging their hair in the sink. Washing it like that worked like a charm. I figured out that they hated water in their faces........and eventually they learned to wash their own hair in the tub (they started by doing the same thing - - laying back in the water rather than pouring water over their heads.)