Holly,
Ice can be used pretty effectively with chemotherapy. It restricts blood flow to the scalp, hence it keeps the chemo drugs "away" from the hairs.
I wonder if topical estrogen has ever been tried and tested scientifically for hairloss.? I know progesterone has and is used in some of Dr. Klein's stuff, but progesterone gets broken down awfully quick. It would need to be put on many times during a day IMO.