Does Black Soap really work?

Hello I am an acne victim that struggled with acne since I was 14. Now at 18 I really will love to have clear, non oily skin. This past weekend I recently went to Underground Atlanta to shop and saw Dudu-Osun Black Soap for sale. They told me that I will see good results on the pimples of my face. I've been using this product for about three days now and hoping to have clear skin. Does this stuff work or should I try Raw Black Soap? whats the difference in between the two?