This recipe of making hair oil is very promising. I have used hibiscus flower, but in powder form, bought fro online store. I have never used raw, fresh hibiscus flower. My personal hair pack comprises of sikakai and amala soaked in iron pot for a day in water, and then apply this paste. This has worked well for me to keep my hair black and healthy. I will try boiling directly in oil using this ingredients, I will tell you the result soon.
Cheers.