I ordered my mom a few hair things from http://www.tlcdirect.org/ and I also got her Nioxin shampoo. Although my mom did not lose all of her hair, she had gemzar/carbo.
As others said, my mom said water is the best thing.
It is soooo scary at first. I honestly made calls to see if I could have private ambulances on call to take my mom to the hospital b/c the one we use is not the local one, I envisioned her needing a bed downstairs, etc.
However, looking back, in the scheme of things, while chemo was no walk in the picnic, my mom handled it surprisingly well, she hardly lost weight (maybe 20lbs which is not much since she is chubby), and she admitted she thought it would be worse.
Also, keep in mind, blood counts can go low during chemo, sometimes the patient needs a small transfusion or needs to skip a visit, etc, etc. Do NOT be alarmed b/c that is NORMAL. I freaked out at that first too