This is a good question one that I didnot think about.
I have used Mizani BB in reg for my hair but because of the conditioners that are added to this relaxer it took 40 min(smoothing) and I still did not get what I wanted (plus I burned) and I had to smooth alot.
My last relaxer which was in June I used Mizani BB super and I did not smooth, I do the half front back method. My outcome was the front was straighter than the back. I have more 4a in the front and the back is more 4b with the nape moving back to 4a. I had to do a corrective a few weeks later smoothing the front half once and the back half 2x. It is much better, however I think to get what I want I will have to smooth the front 2x(the front edge 1x) and the back 3x ( the very nape 2x). Both sections will get a total of 20 min from start to finish.
My hair is very dense and I have fine med and course strands throughout. I love this relaxer so I want it to work, I will make it work darnit.
Why dont you do strand test to see how it will work for you.