People who suffer from hair loss due to chemo cancer treatments use medical wigs to cover the inevitable hair loss. However, soon there will be another option called DigniCap. It is a very cold cap made to keep the scalp icy cold so the chemo drug will not reach the hair follicles, thus preventing hair loss. The company who is trying to get FDA approval says that it is effective in about 86 percent of patients, but it varies depending on the specific chemo drug. The temperature of the cold cap must be minus 22 degrees Fahrenheit.