So far, so good. I feel like I'm getting better curls and they're lasting longer. Here's a picture on Day 8.
To compare, here's the other shot from the day before I started this experiment.
It's not terrible, but the curls are much less defined and a little frizzier than I like. Near my neck, the hair underneath has some amazing curls. I'm hoping that by not messing with the outer layers they'll follow suit. That is the ultimate goal.