Kerapure 3-Day Blowout Extender
Eliminates frizz (even in high humidity) and cuts down on blow-drying time. With continued use, it also reduces curliness ($40; kerapure.com
"The amino acids penetrate the hair to straighten curls," says Wilson.OUR VERDICT
Our bathroom smelled like a chemistry experiment, but once hair dried, it didn't have any odor, and stayed soft, shiny, and full of volume for the entire three days.