About 15 minutes, not including blow drying first (that takes 5-10 minutes). I have shoulder length wavy hair that is pretty easy to straighten.

I use this flat iron with Beyond the Zone Straight Shot serum which is FULL of 'cones.
Sort of CG sometimes, but not really
2B, medium? normal porosity and elasticity?

Cleansers -
Suave Clarifying, Philosophy Happy Birthday Beautiful

Stylers - BRHG, re:coil, Ion Hairspray

I live in the NYC area.