Hey israelite -
i say go for it man,
black castor oil is known to be amazing for skin and hair, so yes it will only be good for u
i have used regular castor and it made my hair slightly thicker and grow faster, and i am now thinking of buying the black one,
i also have recently used henna and it also did the same thing - thicker longer hair all over the head.
do you see any good results so far?
how r u using - r u massaging hard for a good while, let it sit ??
i was rubbing hard but i think something lighter is better, dont mess around your hair and scalp too much,
i think just let it sit there for a day, preferably in the sun or with hot towel around the head and by night / next day wash it away,
i also think its perfectly fine to use minoxidil with this on hair as it will even help the minoxidil absorb better, so no worries for that
so share with us how u apply and use and how r the results
also a note
i know that my hair is doing good and growing when i feel it,
it usually comes really clear and all over my head after a good treatment like maybe oil, or henna or a mask , and i think that this is the feeling we want to preserve