If you thought blowout bars were convenient, check out RPZL (like Rapunzel, get it?), the first walk-in express hair-extension salon in NYC. While traditional extensions require a prior consultation to match your hair color and texture, the recently opened spot is fully stocked with every hue and hair type to accommodate off-the-street folk. Clip-ins are $250, but the keratin natural extensions ($550–$850) are the real draw (lasting three to four months). To avoid hair-damaging heat, the salon uses a miniflatiron to melt the keratin glue on an extension (via ultrasound) and bond it to a small piece of hair. Two hours later, your formerly flat tresses will be fabulous.