Brocato Cloud 9 Miracle Repair 3-in-1 Leave-in Conditioning Spray for $30 and Brocato Cloud 9 Blowout Blow Dry Serum for $28: People rave about Cloud 9 online, and I really like parent brand Beautopia's vibrating hair straightener, but neither of these products did much to cut down frizz during my tests. Briogeo Farewell Frizz Blowdry Perfection & Heat Protectant Creme for $26: I have thick, unruly hair, and this cream protectant felt like it actually made my hair unmanageable and harder to style. Neqi Diamond Glass Styling Spray for $12: I love Neqi's hair perfume spray, so I had high hopes for its heat protectant, but it just didn't do much to reduce frizz.