Not all chemo drugs cause hair loss, however, so discuss your options with your oncologist. How chemotherapy affects your crowning glory can depend on the type and stage of cancer, drug protocol, administration and duration of treatment and other factors. “For example, low doses of oral cyclophosphamide (Cytoxan) are less likely to cause total alopecia,” explains Shikha Jain, MD, a medical oncologist at Northwestern Memorial Hospital in Chicago. (In addition, high or moderate doses of the intravenous form of this drug also causes hair loss.)
Source: What To Do When You Lose Your Hair During Cancer Treatment – Real Health