Kerastase Volumorphose, an in-salon hair treatment ($35; visit kerastase-usa.com
for salon locations). THE PROMISE
Instant body and thickness that lasts a few days and prolongs a professional blowout. THE EXPERT SAYS
"This could potentially be very effective," says chemist Jim Hammer. "It has a molecule that bonds to the hair's surface, and when moisture is appliedwhammo! The molecules link to form a three-dimensional polymer, which has thickening effects and promotes volume." WE SAY
Our hair definitely had more oomph, and the blowout lasted an extra day.