I LOVE songhai black soap.. i didn't like dudu osun or any other i've tried that are full of cocoa or shea butter
the Songhai brand claims to do damn near everything except cure cancer

...and theyre right! My sister used it for acne, I used it cause it leaves this great clean smell on your body (even after I wash my hands with regular soap...weird) and one time I had a patch of eczema on my neck, and it cleared it right up...
But I never thought about using it as a shampoo! Great idea.. I have 10 bars coming to me in the mail, so I will try this.. I'm scared to mix all those oils in with it though because my hair is real fine and doesnt take well to oils (not even coconut

).. but this particular brand of soap , since it doesnt have all of those butters in it can be very drying..
sooo.. if you had to choose maybe one of those oils to mix with the soap.. which one? Lol...I pre-shampooed with wheat germ oil, olive oil, and coconut oil before, maybe I'll try one of those to save money