Heat is the main culprit of dry, frizzy hair, and hairdryers can wreak havoc on your beautiful curls. Fortunately, because your hair is so short, it should not take very long for your curls to air-dry.  If your hair is soaking wet, pat it dry with a microfiber towel or an old T-shirt. Avoid rubbing your hair with a towel, since this can create frizz. If you must blow dry your hair, use a diffuser to prevent voluminous frizz. Avoid detangling your hair with a regular hair brush or fine-toothed comb since they can create frizz. Instead, work a wide-toothed comb through your hair. Start by combing out the ends and gradually work your way to the roots to prevent additional tangles. In a pinch, you can also detangle your hair by running your fingers through your curls. How much styling mousse you use depends on how short your hair is. Start with a dime-sized amount, then add more as needed. Work the mousse into your hair evenly from root to tip. You can also experiment with curling gels, creams, and setting lotions. You can deep-condition your curls with keratin-based treatments or masks. Apply the conditioner to your hair, give it time to penetrate the hair shaft, then rinse it out according to the instructions on the label.  Hydration helps your curls look silky and defined. You can buy keratin-based treatments in salons and beauty supply stores.

Summary:
Let your hair air-dry, if possible, to prevent frizz. Detangle damp hair with a wide-toothed comb. Apply styling mousse while your hair is damp to define your curls. Deep-condition your hair every 1-2 weeks to combat dryness and frizz.