That's what they told me. Unfortunately it's not always true as not all hair grows back. Some remain 'hair-free'. Others grow back something partially that is so different and unappealing that they face a lifetime of wigs or other alternatives unless they can adjust and adopt the new look. I wish there were breast cancer sites that told people this because it's so depressing and stressful to keep being told it's growing back when it may not.
I guess the positive message from the video is that it's about what's inside. That's what's hard to remember and really believe when you don't feel like yourself.