Hey . I wanted to try that relaxer next. Let me know if it works. Stay away from Silk Elements though. It's the perfect relaxer if you want that texlax look. It left me underprocessed though.
I use this, I was just complaining to my sister that it makes my hair TOOOO straight! I love the relaxer but not the bone straight-ness
I used Mizani Butter Blends regular before I started transitioning and I always relaxed bone straight. I self-relaxed and left it on for 12-14 minutes. But I don't think it's so much about how long you leave it on, but the straightening/smoothing technique after it is applied.