Cold caps to save hair from chemo

Happened to see an article today about using cold to save hair during chemo. Naturally, something else that has been used in Europe for about 15 years that we don't have, or hasn't been approved by the FDA, but people are using it. Penguin cold caps are available but cost about $1500 for six months of treatment and we would need a special freezer etc. So, given who my husband is and after 12 years together, we're going to figure out our own methodology for this. I've been doing the things they recommend in terms of using a very pure shampoo, not combing my hair (because it's so short), not using hair dryer etc. (it is summer and it's short), and after three treatments I do still have my hair. Who knows, maybe I can get through this with some hair.