Brahmi, Amla, Shikakai Home Made Hair Oil How Dark Does Brahmi Powder Turn Your Hair?

How dark does Brahmi powder turn your hair? - brahmi, amla, shikakai home made hair oil

I think trying brahmi powder (with LBA and Shikakai powder) for the hair, because I heard so many good things about them. But I know, brahmi hair is darker, but I wonder how? Would it go naturally brown hair, black, or only a few shades darker brown? I ask because I'm pretty happy with my dark brown hair and really do not want to blacken.