Hey! This is so weird, I have like the exact same issue going on. We should be hair twins!
The outside layer, is called the canopy. It is protecting the other layers so it generly will be more damaged meaning it willl have less curl/wave. What I like to do it wear my hair half up half down, (put the canopy layer in a ponytail, leave the underlayer down)
~A proud 2c who is so thankful to have stumbled across this site over a year ago!