Mike, thanks for reminding me to be more mindful about layering scent notes, I need to look at that more carefully. I did try a number of cold process formulations but my hair just turned to straw no matter what I did with those, hence the turn to synthetic detergents for my hair. Ketchito, thank you so much for your advice on the cationic polymer, that is a big help and a really useful practical step.
Adam, I should have been more organized with posing my question at the end of my post instead of the middle, where it got buried. Here it is: ” I came across the aroma chemicals offered at Perfumer’s World and wondered if those – either by themselves or mixed with FO/EO’s - were likely to help as fixatives.” Thanks for pointing that out.