This hair will grow back after the treatments are completed. If a higher dose of radiation is delivered, there is a chance that the hair loss will be permanent. Check with your Radiation Oncologist if you have questions and concerns about this. You can always buy it when the hair loss occurs. Consider getting a shorter haircut.
Shorter hair is easier to manage under a wig.
A shorter style will make your hair look thicker and fuller. It will also make your hair loss easier to manage. Use mild shampoos and conditioner. Use soft hairbrushes. You may use a dye rinse on your hair.