No. 11: Flexible-hold hairspray Hairspray is the finishing touch for any hairstyle. Pelusi recommends buying a travel-sized hairspray so you can take it with you to big events. And if you're only going to buy one hairspray, make it a lightweight, flexible-hold formula. This way you can use it whether your hair is down and loose or slicked into an updo. Babaii recommends White Sands Infinity Hairspray, $20.99, it holds while still letting hair move.