Sponsored content. Us Weekly receives compensation for this article as well as for purchases made when you click on a link and buy something below. Gone are the days when a hair dryer just dries hair — now, it can nourish it, too. Laifen released a new hair dryer that tackles two jobs in one, which means you can cut out other tedious parts of your routine. The Swift 4 High-Speed Hair Dryer delivers a spa-like experience at home, so you’re left with a smoother, shinier and frizz-free ‘do. Your Laifen Swift 4 Hair Dryer comes with the unit itself, along with a smooth nozzle,...