I wanted to make a Lora where using the Flux prompt "extremely long hair" but turns out I just ended up preferentially straightening hair -- especially long hair. I really like what it ends up doing in the end at low to moderate weights (0.4-0.8) but it still works at 1.5 even. It will tend to straighten and lengthen hair and for some reason very nicely gets rid of the "Flux Chin" that I hate!