"This might repulse you, but I'm not worried about my dry shampoo leaving traces of white residue on my hair — I just want it to work on days-old grease. And the Ouai Super Dry Shampoo ($24) isn't messing around: it contains a blend of rice starch and volcanic minerals to sop up even the dirtiest oils from my hair, while resetting my style in the most natural-looking way possible. It leaves behind a veil of white, yes, but an extra 20 minutes of sleep is worth it in my eyes." — Kelsey Castañon, senior beauty editor