Preventing Hair Loss From Chemotherapy

My mother is losing her hair due to chemotherapy..What can she do to lessen the hair loss?
She has not lost all her hair so just looking for alternatives to prevent all of it from falling.
I didn’t try this but I heard that if you use a cold pack on your head during chemo that it will help with not losing hair. Chemo kills all rapidly growing cells, i.e. hair too. If that doesn’t work then she could take control of her situation instead of letting the chemo control it by having a buzz party. That way all of the close friends and family she has will get to take part in her baldness and at the same time see her bald so that it take the anticipated shock that she feels others may feel away and ease her mind…She would have essentially taken control of her self instead of letting chemo take control.
What are the side effects of chemotherapy?