I had a Matrix Hair Smoothing Treatment done about a year ago that made my hair go from a 3B to a 2C. My hair has grown out now about 5 inches, so I need to make a decision about what to do next. I do not want to return to the same salon, as it was very expensive ($400+). I understand that you cannot mix certain types of relaxers, but I cannot find an ingredient list for the Matrix one.

I'm basically just looking for your opinions: should I find another salon that also uses Matrix? Is there another product I can use instead that will not interact with what is already in my hair?

Also, I would prefer my hair to be more of a 2B than a 2C. =\

Any input is greatly appreciated! Thank you!
my hair is mostly 3b, but underneath, I have a few 2b areas.