I have recently finished chemo , for secondary breast cancer in the liver and bones. I had my long hair  cut 

short . The treatment gave me an Iinstant  head ache very painful for ten to fifteen minutes, and the it got  esier I was told by a lady to take paracetamol for pain about half a hour before really helped I didn't lose my hair I got a bit thinner in places but no one ever guessed that I was having treatment and I worked through it having about four days off for side effects of chemo I manage a home for old people with demetia. And have lots of staff no one ever mentioned my hair in a negative way. It now starting to grow thicker very quickly finished chemo Christmas Eve