When my dh had chemotherapy last year for his colorectal cancer, it was a very strong and very aggressive treatment for six months. But he didn't lose his hair. It was because of the kind it was. So I think it depends a lot sometimes not just on how strong it is, but the kind of drugs that are being used also. They told him before hand he wouldn't lose his hair. He wouldn't have minded though.
But I am certainly no expert, but just have had this one experience.
It's such an individual struggle, everyone reacts differently. I'm so thankful that we have the treatments available that we do.
But I know when you are going through it, you just feel that you are losing so much and maybe even your life... so I can see why you might want to hold onto at least something... anything.....