7 Days to Effortless, Frizz-Free Curls! Frizz happens when dry, porous hair sucks up excess moisture in the air. Give yourself a deep treatment with heat to help seal in moisture and prep your hair for frizz-free locks. To maximize the conditioning affect, warm up a helping of pure jojoba, olive or pomegrante seed oil and mix with your conditioner. Be sure to leave it on for at least five minutes.