As the effects of wind, swimming, and UV rays wreak havoc on hair, a new dry shampoo arrives to boost it back up. From celebrity stylist Laurent D., Privé Volumizing Dry Shampoo ($29) is the perfect, compact styling product for on-the-go use. Not only does it soak up oils, it also gives hair heft and volume and cleanses the scalp. Free of parabens, sulfates, and talc, you only need a few sprays to see and feel results. Locally, the new product is carried at COLOR, A Salon by Michael Boychuck inside Caesars Palace.