Presenting the 30 Best Beauty Products of 2017

Who says second- (or third-) day hair has to be a bad thing? Certainly not Jen Atkin, whose Ouai Dry Shampoo Foam ($22) revamped the saturated strand-refreshing market. Whether your trouble area is dirt, grease, or a little too much hairspray, Jen Atkin told us this foam has got your back — er, head. "Use this foam as a magic eraser," she said. "It's like taking your hair to the dry cleaner!"