It's Cold Baths Only for Madame Sylvia
Don't take a hot bath - "It is a cold bath that is resting."
Only take baths in cold or lukewarm water
Cold baths are therapeutic and combat insomnia
Cold baths are an astringent and tighten your skin
After your bath, take a rough towel or glove and rub yourself vigorously for 10 minutes
[Source: Hollywood Undressed; Page 227]