47 W. 57th St.
The image of a jet-setter—fabulous clothes, gleaming teeth, perpetual tan—fails to take into account the toll air travel takes on the system, especially if several time zones are passing beneath you. Dehydration and cramped seating leave you tied up in knots and generally cranky. Dorit Baxter’s rejuvenating treatment ($99 per hour) includes hot compresses soaked in pennyworth—an old-fashioned stimulant also known as gotukola—to various parts of the body as other areas are being massaged and soaked. The hour itself is relaxing, and the compresses moisturize and boost circulation, thus helping to undo the abuse of seven hours in a window seat watching The Notebook.