recently permed hair

After you wash it, try only brushing or combing it when it's wet (I'd suggest combing, you pull out less hair than brushing when you do it wet), then don't comb it again after that until after your next wash. That should improve the look of your curls and reduce frizz. To keep it from getting knotty while you sleep, if it's long, wear it in braids or a bun, then just comb with your fingers the next morning.