Ever since I started using hair products -- because yes, my friends, there were many verrrrrrry scarrrrrrrry teenage eons before I ever knew they existed -- my favorite and old standby has been Matrix Sculpting Glaze, now known (and in sale at regular stores) as Biolage Gelee'.
This has worked great for my hair in its all-one-length-ringlet days as well as during times of layers, and I can't imagine not always having a bottle in my bathroom cabinet, just in case.
I have tried other products over the years, and recently found one that really works for me. I'm not sure it works as well as Biolage (the results aren't the same, but I don't want them to be, right?), so it's hard to gauge. I do, however, love the combo, and have received many curly compliments on it.
So if you're a curly girl, and are looking for options, maybe it could work for you.