The longtime choice of celebs, this dry shampoo has been praised for its versatility as a grease buster, volumizer, and waterless cleanser. Made with softening oat milk extracts, plus corn and rice starches, the ultrafine powder spray leaves nary a trace of residue behind. It not only soaks up oil and sweat from your roots but also helps revive second day hair, amp up volume, extend the life of blowouts, and add texture when you're trying to perfect a tricky updo.