I have mid-back length hair that's relatively thick and fairly heavy. At the ends, I get fairly tight ringlets, but it gets looser the higher it goes.

I know I can get it uniform if I cut it off short, but I don't want to cut it! Is there anything I can do to even it out (preferably make the curl at the top tighter rather than mess with the curl at the bottom)? I can't have any strong scents, so that limits what products I can use.

Thanks!

Edit: I use Earth Science fragrance-free conditioner for CO-washing, Too Shea! for a conditioner, and some combination of Rockin Ringlets, Confident Coils and/or aloe gel.