Thanks for the tips all.

@Kitschy,
I used to comb only when it was wet, but it still turns rather frizzy later during the day compared to when I only use my fingers to style. My hair isn't even that tightly curled (ringlets are about the size of my thumb or even bigger sometimes) but still combing makes it look rather frizzy. I never knew that not combing could make such a big difference.