Long hair LoRA for Flux and Z-image.
For Z-image, I recommend a LoRA strength of 0.7 for an initial start, but you can weaken it / strengthen it depending on what you want.
For Flux, a LoRA strength of 1 is fine.
In general, for the best results, I would recommend making sure that your original prompt best describes the hair that you're looking for; don't rely off of the LoRA alone for that. A good prompt + the LoRA will give you amazing results.
Any feedback is appreciated! :)