Reducing frizz naturally can be done with a few simple steps. First, use a deep-conditioning hair mask or oil treatment once or twice a week to help prevent dryness and frizz. You can also use a natural leave-in conditioner or natural oils like coconut or argan oil. Try to avoid heat styling tools, as the heat can make frizz worse. Lastly, use a wide-tooth comb or a microfiber towel to help reduce frizz when styling.