Possible Clues:

• That's twice nothing in half for the bath
• The fibrous interior of the dishcloth gourd, which is dried, bleached, and used as a bath sponge
• Hullo, you idiot, get back in the bath
• Bathroom sponge for washing back
• Look of horror at first, embracing a scrubber
• Piece of cleaning equipment Charlie returned to a hospital
• Maybe ladies and footballers will need hard scourer
• Exclamation after fool turns up for sponge
• John, with devout belief, renouncing it for a rough scrubber
• Spongy exfoliant