This brand makes a another product kit (Liquid Keratin Dark) for curlier, coarser hair. I have a crazy mix of mostly 3c with some 3a, 3b, 2c, and 4a mixed in. I want to keep my curls/waves, I just want to loosen them to combat shrinkage. Which Liquid Keratin treatment should I get? The Original or the "DARK"?