Instead of a towel, use an old t-shirt to dry your hair. Towels can create a scrubbing effect on your hair, removing product and damaging curl. The smoother texture of a t-shirt will prevent frizz and help to maintain your curls.
Squeeze your curls gently, never rub, in order to preserve your natural curl pattern. Move along in sections, taking a hand full of hair at a time. Keep in mind that overexposure to any type of touch can cause curly hair to lose volume or become frizzy. For best results, t-shirt dry each section of your hair only once. Be sure to squeeze out excess water and then let the final drying be by air.