She slips into Dee’s Golden Door at the same time each Monday morning. Slender and stylish, she’s north of 70, though by how much, one doesn’t ask. It’s not important; the reason she’s here has less to do with age than with an era—a time when the weekly hair appointment at a place like Dee’s was a commitment as ironclad as the resulting hairstyle. This morning, the ritual involves transforming a head of sparse, straight white hair into a corona of hibiscus-colored curls, the kind of five-l...