I'm mostly 4a, with a little 3c up in there...I use Dudley's Mild Relaxer (everytime I strayed from this I had a problem). They have a new Dudley's Mild moisturizing relaxer that my hairdresser picked up for me, and it's supposed to be a more mild version with conditioner already added. I'm never bone straight, my fine strands can't withstand being really straight.