Which herb is best for hair growth for black hair?

I'm curious, could you please elaborate on which herb is most effective for promoting hair growth specifically for individuals with black hair? I'm seeking a natural solution to enhance the health and vitality of my hair, and I'm eager to learn more about the benefits of various herbs in this regard. Is there a particular herb that has been proven to be particularly beneficial for black hair growth, or is it a matter of individual response and experimentation?