Your exp sounds the same as mine. I did the global keratin treatment in my hair for about two years and a half. My hair was healthy, shiny, and it grew but when I wanted to start going back to curls I had wavy hair. I grew it out and tried to start styling my hair naturally but it looked ridiculous to have half crazy curly half wavy/almost straight hair. I had to really mess with my ends and use a lot of product to get it to look decent with my natural curl pattern. I ended up cutting most of it all off which now has my hair at armpit length from waist.